Unit 3 Science versus nature
课题 Unit 3 Science versus nature 课型 复习课
教学目标 培养阅读技巧，限时训练
重点 限时训练 难点 限时训练
教法 讲授法、讨论法、探究法
教学过程 教 学 内 容 个案调整
教师主导活动 学生主体活动
Third period Reading strategies: Understanding scientific termsWhen reading articles about science, we often come across difficult scientific terms. We have to work out their meaning in order to understand the text as a whole. Begin by reading the first and last paragraphs for an idea of what the article is about. Then, scan the body of the article. Circle any words you do not know. Question things you do not understand or that do not appear to make sense. Finally, read through the article a few times. You will often be amazed to discover that what confused you at first makes sense upon further readings.2011年江西卷D篇Why should mankind explore space Why should money, time and effort be spent exploring and researching something with so few apparent benefits Why should resources be spent on space rather than on conditions and people on Earth These are questions that, understandably, are very often asked. Perhaps the best answer lies in our genetic makeup(基因构成) as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.Nearly every successf ( http: / / www.21cnjy.com )ul civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects. Exploration also allows minerals and other potential (潜在的) resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products (副产品) of technological developments in the space, the chance to save ourselves might not exist.While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.While Earth is ( http: / / www.21cnjy.com )the only planet known to support life, surely the adaptive ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.71. Why does the author mention the questions in Paragraph1 A. To express his doubts. B. To compare different ideas.C. To introduce points for discussion. D. To describe the conditions on Earth. 72. What is the reason for exploring space based on Paragraph2 A. Humans are na ( http: / / www.21cnjy.com )ture-born to do so. B. Humans have the tendency to fight.C. Humans may find new ( http: / / www.21cnjy.com ) sources of food. D. Humans don’t like to stay in the same place. 73. The underlin ( http: / / www.21cnjy.com )ed word “spin-offs” in Paragraph 4 probably refers to______.A. survival chances B. potential resourcesC. unexpected benefits D. physical possessions 74. What makes it possible for humans to live on other planets A. Our genetic makeup. B. Resources on the earth..C. The adaptive abilit ( http: / / www.21cnjy.com )y of humans. D. By-products in space exploration. 75. Which of the statements can best sum up the passage A. Space exploration has created many wonders.B. Space exploration provided the best value for money.C. Space exploration can benefit science and technology.D. Space exploration may help us avoid potential problems on Earth.Can dogs and cats live in perfect harmony in the same home People who are thinking about adopting a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe of success. According to the study, if the cat is adopted before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. Two-thirds of the homes interviewed reported a positive relationship between their cat and dog.However, it wasn’t all ( http: / / www.21cnjy.com ) sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this is probably that some of their body signals were just opposite. For example, when a cat turns its head away it signals aggression, while a dog doing the same signals submission.In homes with cats a ( http: / / www.21cnjy.com )nd dogs living peacefully, researchers observed a surprising behaviour. They are learning how to talk each other’s language. It is a surprise that cats can learn how to talk ‘dog’, and dogs can learn how to talk ‘Cat’.What’s interesting is ( http: / / www.21cnjy.com )that both cats and dogs have appeared to develop their intelligence. They can learn to read each other’s body signals, suggesting that the two may have more in common than was preciously suspected. Once familiar with each other’s presence and body language, cats and dogs can play together, greet each other nose to nose, and enjoy sleeping together in the sofa. They can easily share the same water bowl and in some cases groom(梳理) each other.The significance of t ( http: / / www.21cnjy.com )his research on cats and dogs may go beyond pets----to people who don’t get along, including neighbors, colleagues at work, and even world superpowers. If cats and dogs can learn to get along, surely people have a good chance. 31. The underlined word swimmingly in paragraph1 is closest in meaning to______.A. early B. sweetly C. quickly D. smoothly 32. Some cats and dogs may fight when _________.A. they are cold to each other B. they look away from each otherC. they misun ( http: / / www.21cnjy.com )derstand each other’s signals D. they are introduced at an early age 33. What is found surprising about cats and dogs A. They eat and sleep together B. They observe each other’s behaviorsC. They learn to speak ( http: / / www.21cnjy.com ) each other’s language D. They know something from each other’s voice34. It is suggested in paragraph 4 that cats and dogs_______.A. have common interests B. are less different than was thoughtC. have a common b ( http: / / www.21cnjy.com )ody language D. are less intelligent than was expected 35. What can we human beings learn from cats and dogs A. We should learn to ( http: / / www.21cnjy.com )live in harmony B. We should knows more about animalsC. We should live in p ( http: / / www.21cnjy.com )eace with animals D. We should learn more body languages
板书设计
当堂作业
课外作业
教学札记Unit 3 Science versus nature
单元视窗
Wordlist
clone [kl un] vt.克隆 n.克隆出来的动物或植物 * embryo [ embri u] n.胚胎 on the one hand…on the other hand … 一方面…另一方面…tissue [ ti u:] n. (生物的)组织;纸巾 toy with戏弄,摆弄;把…当作儿戏 real-life adj真实的,现实生活中的 * monster [ m nst ] n.怪物 exact [ig z kt] adj.精确的,准确的 cell [sel] n.细胞;小隔间;电池 * mammal [ m m l] n.哺乳动物 * Scottish [ sk ti ] adj.苏格兰的 intention [in ten n] n.意图,目的;企图 anxiety [ zai ti] n.忧虑,焦虑,不安 saleswoman [ seilzwum n] n.女售货员, 女推销员 adopt [ d pt] vt.收养,领养;采用,采纳 legal [ li:g l] adj.法律许可的,合法的 push ahead with义无反顾地进行, 努力推进 * Italian [i t li n]adj.意大利的 n.意大利人;意大利语physician [fi zi n] n.医师;内科医生 goat [g ut] n.山羊 consequence [ k nsikw ns] n.结果,后果 harvest [ hɑ:vist] vt. & vi.收割(庄稼) n.收获;收成for sale供出售,待销售 transform [tr ns f :m] vt.使改变外观或性质 (尤指向好的方向) ; 使改变形态 concept [ k nsept] n.概念;观念 crime [kraim] n.罪,罪行 fellow [ fel u] n.男子,家伙;同事,同类 profession [pr fe n] n.职业,行业 radiation [ reidi ei n] n.辐射,放射线 breakthrough [ breikθru:] n.突破 original [ rid n l] adj.原来的,起初的; 首创的;非复制的 judgement [ d d m nt] n.判断力;看法, 评价; (法律)判决 be/ get burnt out耗尽体力,累垮 relation [ri lei n] n.关系;亲戚 public relations n.公共关系 follow in one's footsteps效仿某人 conduct [ k nd kt] vt.实施;指挥乐队majority [m d riti] n.多数,大多数 summary [ s m ri] n.总结;概括,概要 consideration [k n sid rei n] n.仔细考虑; 必须考虑的因素;体谅,顾及 take... into consideration认真考虑 hunger [ h g ] n.饥饿;饥荒 tasty [ teisti] adj.美味的,可口的 nutrition [nju: tri n] n.营养 ordinary [ :din ri] adj.普通的,一般的 reliable [ri lai bl] adj.可信赖的,可依靠的 accurate [ kjur t] adj.准确的,精确的 brief [bri:f] adj.短时间的,短暂的; 简洁的,简单的actual [ kt u l] adj.真实的,实际的 confirm [k n f :m] vt. & vi.证实,证明; 确认;使确信 agriculture [ grik lt ] n.农业 channel [ t n l] n.水道;航道;隧道 favour [ feiv ] n.赞同,支持;恩惠, 帮助;偏爱,偏袒 in favour of赞同,支持 point of view n.观点 catastrophe [k t str fi] n.灾难,灾祸 * resource [ri s :s] n.资源 acre [ eik ] n.英亩 rainforest n.雨林 income [ ink m] n.收入,收益 * genetics [d i netiks] n.遗传学 frighten [ fraitn] vt.使惊吓,使惊恐 * genetically [d net kl ]adj. 从基因上, 与基因相关 * modify [ m difai] vt.调整,修改;修饰 genetically modified转基因的 insert [in s :t] vt.插入,嵌入 * DNA n.脱氧核糖核酸 (deoxyribonucleic acid缩写)pest [pest] n.害虫 profit [ pr fit] n.利润,收益 vi. & vt.获益;对……有用chain [ t ein] n.一系列;一连串(人或事) food chain n.食物链 permission [p mi n] n.准许,许可,批准
把你没有记牢的挑出来，好好滴记住哦！
The perfect copy Focus
Scientists have anno ( http: / / www.21cnjy.com )unced that they have cloned the first human embryo. This has caused much debate round the world. On the one hand, some scientists point out that if you clone an embryo, you can produce valuable human tissues—such as bone or lung tissue—that could be used to save human lives. On the other hand, many people, including some scientists, disagree and are afraid that, if mankind toys with nature in this way, we may be on our way to producing a real-life Frankenstein's monster. Cloning is producing ( http: / / www.21cnjy.com )an exact copy of a plant or an animal using its cells. The first mammal to be cloned successfully from an adult cell was Dolly the sheep. She was born in 1996 and died in early 2003, at a much younger age than normal. When she was born, many people were worried that cloning would lead to more diseases in the animal world. However, in general the scientists were praised for their wonderful scientific advance. Ian Wilnut, the Scott ( http: / / www.21cnjy.com )ish scientist who created Dolly, is shocked that some scientists are now considering cloning human beings. Although he researches cloning, his intention has never been to create copies of humans. Instead, he thinks research efforts should concentrate on creating new tissues and organs that can be used to cure diseases like cancer. However, some people believe that cloning human embryos with the intention of destroying them shows no respect for human life. Even though h ( http: / / www.21cnjy.com )uman cloning is causing a lot of anxiety, it is good news for Faye Wilson, a 41-year-old saleswoman who cannot have a baby. ‘I am anxious to have a child of my own,’ she says. 'I don't want to adopt someone else's child—if I had the chance, I would have a cloned baby right now.' While cloning human ( http: / / www.21cnjy.com ) embryos is not legal in many countries, some scientists are already pushing ahead with research in order to produce a cloned human baby. Severino Antinori, an Italian physician, has declared that he wants to be the first to clone a human being. In China, scienti ( http: / / www.21cnjy.com )sts have focused their efforts on cloning animals, as well as cloned tissues to be used in medical treatment. China has succeeded in producing clones of cows and goats, and continues to research ways in which cloning can benefit mankind.Dear Editor, I believe that hu ( http: / / www.21cnjy.com )man cloning is wrong. If we toy with nature, we will have to deal with the consequences. Who knows what could happen Human life would just become a crop to be harvested or a product for sale. The human race is usin ( http: / / www.21cnjy.com )g up Earth's natural wealth. We should be having fewer babies in order to reduce Earth's population, not cloning more. I feel sorry ( http: / / www.21cnjy.com )for the lady who cannot have a baby, but I would like to point out that there are many children in the world with no parents who would be delighted to have a mother. Pauline CarterDear Editor, I would like ( http: / / www.21cnjy.com ) to comment on your article 'The perfect copy'. I think the scientific advances mentioned in your article are fantastic. I am in complete agreement with human cloning. After all, scientists have been challenging moral ideas for centuries. Why should we stop them now On a personal note, ( http: / / www.21cnjy.com ) cloning would totally transform my life. Seven years ago, my 10-year-old daughter died of heart failure. She was beautiful, cheerful and bright. I miss her every single day. If I had the chance, I would clone her immediately so that I could be with her again.Colin Jake
First period
Listen and learn:
Listen to the wordl ( http: / / www.21cnjy.com )ist and try to learn the words and phrases by heart.
◆Step 1:
◆Step 2: Personal show
●Task 1: Give the following words’ Chinese meaning
consequence n. harvest vt. & vi. n.
transform vt. concept n.
breakthrough n. conduct vt.
nutrition n. reliable adj.
brief adj. confirm vt. & vi.
●Task 2: Translate the following words
戏弄,摆弄;把……当作儿戏 n.意图,目的;企图
vt.收养,领养;采用,采纳 adj.法律许可的,合法的
义无反顾地进行, 努力推进 效仿某人
n.总结;概括,概要 n.资源
n.仔细考虑; 必须考虑的因素;体谅,顾及 n.利润,收益 vi. & vt.获益;对…有用
Step 3: Text reading Listen to the text and then finish the following sentences
●Task: Task-based reading阅读课文, 完成下表。注意：一空一词
Para. 1 Different opinions on the first human embryo 1. _______
For: Human embryo ( http: / / www.21cnjy.com ) cloning can produce valuable tissues—2. _____ bone or lung tissue—that could be used to 3. ______ human lives. Against: We may be o ( http: / / www.21cnjy.com )n the way to producing a real-life Frankenstein’s 4.____.
Para. 2 Different opinions on the birth of 5. ________
For: People 6. _______ scientists for the scientific breakthrough. Against: Cloning would create more 7._____.
Para. 3~5 Ian Wilmut’s intention Severion Antinori’s intention
Research efforts s ( http: / / www.21cnjy.com )hould be 8. ______ on creating new tissues and organs for medical use. Cloning human embryos with the intention of destroying them shows no 9. _____ for human life. To be the first to clone a human being.
Para. 6 Chinese scientists ( http: / / www.21cnjy.com )have focused their efforts on cloning 10. ______, as well as cloned tissues to be used in medical treatment.They have succeeded in cloning cows and goats.
Homework:
1. Read the text
2. Try to recite the sentences in step 3-Task 1
Second period
Step 1: Personal show
Write down the words according to yourself.
Step 2: Language focus
◆ 1. intended adj. (为…〉打算的/设计的
intention n.意图；目的；企图
知识探究：My brother intends to study abroad next year. 我弟弟打算明年到国外留学。He went to Pari ( http: / / www.21cnjy.com )s with the intention of learning/ to learn French. 他到巴黎是为了学法语。I have no intention of going to the wedding. 我无意去参加婚礼。The course is intended for intermediate students. 这个课程是为中等水平的学生开设的。The dictionary is intended for children. 这本字典是给小孩用的。His parents intended him to study abroad. 他的父母想让他去国外学习。 归纳整理：
题练落实：1. Small children don’t like books that are _______ for adults. A. promised B. permitted C. admitted D. intended 2. ---I thought you and Peter were going for a bike ride. ---_______, but th ( http: / / www.21cnjy.com )e front wheel of my bike is bent and I haven’t had it fixed. A. We intended to B ( http: / / www.21cnjy.com ). I’m sorry C. Well, we went D. She was, and I won’t 3. In the park ( http: / / www.21cnjy.com ), the number of visitors is tightly _______ to avoid damaging the environment or putting stress on the animals. A. limited B. encouraged C. expected D. intended4. She ________ to catch the early train, but she didn’t get up in time. A. intended B. was intended C. had intended D. was intending
联想拓宽：without intention无意 ( http: / / www.21cnjy.com )地 by intention故意地 with good intention善意地，诚意地 点津： had intended to do sth.指本来打算做某事而没有做; intend后接宾语从句时其谓语形式应用"should do"结构，should可以省略。
◆ 2. adopt vt. &. vi.收养,领养;采用(方法) ;采取(态度) ;采纳 (建议) ;承袭(风俗) ;选举
知识探究：Papers like this ten ( http: / / www.21cnjy.com )d to adopt a very simple writing style.这样的论文往往采用比较朴实的写作风格。 Mr Kern adopted the orphan as his own son. 克恩先生收养了那个孤儿。 Congress has adopted the new measure. 国会通过了新的议案。 归纳整理：
题练落实：1. The old couple decided to _______ a boy and a girl though they had three of their own. A. adapt B. bring C. receive D. adopt 2.The poor mother, who ( http: / / www.21cnjy.com ) had been ill in bed, had to have her little son _____ at his uncle's. A. adapted B. adopted C. adjusted D. applied3. This teaching m ( http: / / www.21cnjy.com )ethod is being ____ in several schools to help children with disability obtain higher education. A. attended B. adopted C. adapted D. admitted
联想拓宽：adopt 与 adapt 1) adopt vt.采取,采用;收 ( http: / / www.21cnjy.com )养,领养;正式通过;接受 adopt (vt. )-adopted (adj. )-adoption (n. ) 2) adapt vt.使适应,使适合; ( http: / / www.21cnjy.com )修改,改编vi.适应(to) adapt (n. )-adaptable (adj. )-adaptation (n. ) 3) adapt sth. for sth. 改变某事物以便在不同情况下运用 adapt to适应 All his suggestions have been adopted. 他所有的建议全部被采纳了。 an adopted child养子(女) The number of ado ( http: / / www.21cnjy.com )ptions has risen in the past year. 在过去的一年,收养子女的数目增加了。adoption n.收养;领养;采用;推选 adoptive adj.收养的;有收养关系的 adopted adj.收养的,领养的 adopt one's method of teaching 接受某人的教学方法 adopt an idea采纳意见 adopt a report接受报告 adopt a child收养孩子
Third period
Reading strategies: Understanding scientific terms
When reading artic ( http: / / www.21cnjy.com )les about science, we often come across difficult scientific terms. We have to work out their meaning in order to understand the text as a whole. Begin by reading the first and last paragraphs for an idea of what the article is about. Then, scan the body of the article. Circle any words you do not know. Question things you do not understand or that do not appear to make sense. Finally, read through the article a few times. You will often be amazed to discover that what confused you at first makes sense upon further readings.
2011年江西卷D篇
Why should mankind ( http: / / www.21cnjy.com )explore space Why should money, time and effort be spent exploring and researching something with so few apparent benefits Why should resources be spent on space rather than on conditions and people on Earth These are questions that, understandably, are very often asked.
Perhaps t ( http: / / www.21cnjy.com )he best answer lies in our genetic makeup(基因构成) as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.
Nearly every ( http: / / www.21cnjy.com )successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects.
Exploration also ( http: / / www.21cnjy.com )allows minerals and other potential (潜在的) resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products (副产品) of technological developments in the space, the chance to save ourselves might not exist.
While many resources a ( http: / / www.21cnjy.com )re spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.
While Earth is the onl ( http: / / www.21cnjy.com )y planet known to support life, surely the adaptive ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.
71. Why does the author mention the questions in Paragraph1
A. To express his doubts. B. To compare different ideas.
C. To introduc ( http: / / www.21cnjy.com )e points for discussion. D. To describe the conditions on Earth.
72. What is the reason for exploring space based on Paragraph2
A. Humans are na ( http: / / www.21cnjy.com )ture-born to do so. B. Humans have the tendency to fight.
C. Humans may find ne ( http: / / www.21cnjy.com )w sources of food. D. Humans don’t like to stay in the same place.
73. The underlined ( http: / / www.21cnjy.com )word “spin-offs” in Paragraph 4 probably refers to______.
A. survival chances B. potential resources
C. unexpected benefits D. physical possessions
74. What makes it possible for humans to live on other planets
A. Our genetic makeup. B. Resources on the earth..
C. The adaptive a ( http: / / www.21cnjy.com )bility of humans. D. By-products in space exploration.
75. Which of the statements can best sum up the passage
A. Space exploration has created many wonders.
B. Space exploration provided the best value for money.
C. Space exploration can benefit science and technology.
D. Space exploration may help us avoid potential problems on Earth.
2011年广东卷B篇
Can dogs and cats live in perfect harmony in the same home People who are thinking about adopting a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe of success. According to the study, if the cat is adopted before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. Two-thirds of the homes interviewed reported a positive relationship between their cat and dog.
However, it wasn ( http: / / www.21cnjy.com )’t all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this is probably that some of their body signals were just opposite. For example, when a cat turns its head away it signals aggression, while a dog doing the same signals submission.
In homes with cats ( http: / / www.21cnjy.com )and dogs living peacefully, researchers observed a surprising behaviour. They are learning how to talk each other’s language. It is a surprise that cats can learn how to talk ‘dog’, and dogs can learn how to talk ‘Cat’.
What’s interestin ( http: / / www.21cnjy.com )g is that both cats and dogs have appeared to develop their intelligence. They can learn to read each other’s body signals, suggesting that the two may have more in common than was preciously suspected. Once familiar with each other’s presence and body language, cats and dogs can play together, greet each other nose to nose, and enjoy sleeping together in the sofa. They can easily share the same water bowl and in some cases groom(梳理) each other.
The significance o ( http: / / www.21cnjy.com )f this research on cats and dogs may go beyond pets----to people who don’t get along, including neighbors, colleagues at work, and even world superpowers. If cats and dogs can learn to get along, surely people have a good chance.
31. The underlined word swimmingly in paragraph1 is closest in meaning to______.
A. early B. sweetly C. quickly D. smoothly
32. Some cats and dogs may fight when _________.
A. they are cold to each other B. they look away from each other
C. they misundersta ( http: / / www.21cnjy.com )nd each other’s signals D. they are introduced at an early age
33. What is found surprising about cats and dogs
A. They eat ( http: / / www.21cnjy.com )and sleep together B. They observe each other’s behaviors
C. They learn to ( http: / / www.21cnjy.com )speak each other’s language D. They know something from each other’s voice
34. It is suggested in paragraph 4 that cats and dogs_______.
A. have common interests B. are less different than was thought
C. have a co ( http: / / www.21cnjy.com )mmon body language D. are less intelligent than was expected
35. What can we human beings learn from cats and dogs
A. We should lear ( http: / / www.21cnjy.com )n to live in harmony B. We should knows more about animals
C. We should liv ( http: / / www.21cnjy.com )e in peace with animals D. We should learn more body languages
Forth period
Project 1: Man versus nature
For a long time, our environment has been damaged because humans have been careless. People have harmed nature through agriculture, fishing, hunting and tourism. We further damage Earth by building new channels in the sea and factories on the land, and by creating pollution with chemical waste. We will some day destroy the planet we live on if we continue in this way.
However, if we fo ( http: / / www.21cnjy.com )cus only on conservation, then people may suffer. Not everything that is best for nature is good for people. Would anyone say that development should be stopped in favor of nature From the point of view of some people, we are only doing what humans have always done, using nature to meet our own needs. Other people argue that such thinking may cause a catastrophe, unless we start to look around and understand how a clean environment benefits us all.
After decades of destroying nature and using up natural resources, many developed nations are now concerned about saving nature rather than developing or destroying it. However, many poorer nations must focus on meeting the everyday needs of their people. In doing so, they are using up natural resources at a fast pace. They have not yet seen the effects of the careless use of the environment like many wealthy nations have. Often they do not realize that the choices they make are bad for the environment. Should they be blamed for destroying hundreds of thousands of acres of rainforest if it means a better income for their people The developed and developing countries of the world need to work together to make sure that people enjoy healthy and happy lives, without the environment around them suffering.
It should not ( http: / / www.21cnjy.com ) be a question of humans winning and nature losing. Humans can only really win by protecting nature. After all, food has to be produced in a healthy, natural system, and we all need clean air to breathe and pure water to drink. It is mankind's responsibility to find answers that are good for everyone, and everything.
Project 2: GM food: hope or danger
In recent years ( http: / / www.21cnjy.com ), there has been great progress in the study of genetics. With this progress, doors have been opened up to technologies that never existed before. While many people are excited about these new technologies, these same technologies frighten others. Nowhere is this truer than with genetically modified (GM) food.
There are two ways in ( http: / / www.21cnjy.com )which a plant or an animal can be genetically modified. First, new material can be inserted into its DNA to give the plant or animal qualities which it would never have in nature. Second, material can be taken from the DNA of a plant or an animal in order to remove qualities which are not desired.
One aim of GM rese ( http: / / www.21cnjy.com )arch is to produce food which will make us healthier. So far, this technology has been used to produce plants which are better able to defend themselves against pests and disease. Supporters of GM food argue that GM plants are healthier and have larger harvests. While there has been research in GM animals such as pigs, no GM meat is being sold at present.
Many questio ( http: / / www.21cnjy.com )ns have been raised about GM food. No one really knows whether it is safe for animals or humans to eat. Scientists admit that more tests should be done on GM food. Research has been limited to increasing production profits, rather than making sure that GM foods are safe. GM food could therefore be dangerous to eat.
There is als ( http: / / www.21cnjy.com )o a question as to whether GM plants are safe for the environment. Since GM crops are planted outside, they are part of the food chain—insects and other animals eat them or use their products, and these insects and animals will be eaten by yet other animals. No one knows what effects the GM material might have on the food chain.
Since no one really knows whether GM food is safe, many countries have hesitated to give permission for the production of GM foods, as they would rather be cautious with this new technology.
Step 1: Read and learn
◆ Listen to the text and grasp the general spirit of the text
Language focus:
◆ 1. consider vt. 考虑；认为考虑；认为
知识探究：I’m considering changing my job. 我在考虑还份工作。We’re considering selling the house. 我们正在考虑卖掉房子。I consider what he said as reasonable. 我认为他说的有道理。 She considers it impolite to talk while eating. 她认为吃饭的时候说话是不礼貌的。He was generally considered to have invented the first computer.人们普遍认为是他发明了第一台计算机。We consider Jack to have let out the secret. 我们认为是杰克泄露了秘密。 归纳整理：consider作“考虑”讲时,其后可接名词、代词、动名词或宾语从句,也可接由how, what等引导的不定式,但不可直接接不定式。consider + n. / pron. consider + doing. consider +从句consider +疑问词+to do consider为“认为”时,后接that从句,复合宾语或带不定式的复合结构,但不可接动名词,结构表示如下：consider + that...consider +宾语+(to be/ as)+n./adj.consider + sb. to have done sth.consider + it + adj./ n.(+for sb.) to do sth.
题练落实：1. All the staff in o ( http: / / www.21cnjy.com )ur company are considering _____ to the city center for the fashion show. A. to go B. going C. to have gone D. having gone2. Columbus was considered _______ the great land of America. A. to discover B. ( http: / / www.21cnjy.com )to have discovered C. discovering D. having considered 3. ---I can’t stand Jack. He is too inefficient! ---Nobody is perfect. Try to be _______ to others. A. considering B. considerate C. considerable D. considered 4. _________ his hig ( http: / / www.21cnjy.com )h social status, it is really hard for us to _____ his joining us in going west to teach children there.A. Considered; prevent from B. Considering; opposeC. To consider; persuade D. Being considered; object to5. He wasn't made p ( http: / / www.21cnjy.com )resident of the board of directors, ________ not very popular with all its members.A. to be considered ( http: / / www.21cnjy.com )B. being considered C. considering D. having considered6. The car burn ( http: / / www.21cnjy.com )s more fuel, but _____ all things into consideration, it's still a good car. A. taken B. having taken C. taking D. to take 7. You surely can ( http: / / www.21cnjy.com )'t _______ him to be a selfish man, for he is ready to help anyone in trouble. A. doubt B. remain C. advise D. consider 8. Have you considered ________ him for help A. ask B. asking C. to ask D. asked 9. ________ his inexperience, he has done a very good job, so you should give him something as a (an) _________. A. Considered; award ( http: / / www.21cnjy.com )B. Given; reward C. Regard; gift D. Considering; prize 10. It always made us ( http: / / www.21cnjy.com ) embarrassed that when we tried to greet him politely, we were still considered _______. A. to be rude B. being rude C. to being rude D. to have been rude
联想拓宽：consider的名词形式是consideration,与其相关的常用词组有：out of consideration for出于对……的考虑;体谅 be worthy of consideration值得考虑be under consid ( http: / / www.21cnjy.com )eration在讨论中 take sth. into consideration考虑到,顾及,把…考虑在内have consideration for ( http: / / www.21cnjy.com ) others为别人着想 give one's careful consideration加以慎重考虑 in consideration of考虑到;作为对……的回报(= in return for) considerate adj.体贴的;考虑周全的 considering prep. / conj.考虑到……;就……而言(3)consider...as...表示“把……当作……来看待”, 此外以下结构也可以表示这一含义：regard. . . as. . . / respect. . . as. . . / accept. . . as. . . / recognize. . . as /think of... as: / think. . . to be / have. . . as / look on. . . as / treat. . . as considerate adj. 体贴的,考虑周到的 considerable adj. 相当多的,相当大的consideration 考虑,体贴,报酬 considering prep. & conj. 考虑,就…而言be considerate towards sb. 对…体贴 be considerate to do sth. 做…考虑周到的in consideration of 作为对…的回报,考虑到take … into consideration (account) 考虑某事物,体谅某事物under consideration 在考虑中
阅读理解：
Special trees ( http: / / www.21cnjy.com ) that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US.
When 40 per cent o ( http: / / www.21cnjy.com )f Hawaii's US$14 million-a-year papaya (木瓜)industry was destroyed by a virus five years ago, work began on creating genetically engineered (转基因的) trees.
Researchers successf ( http: / / www.21cnjy.com )ully introduced seeds that were designed to resist the virus. Since then, more and more people have been testing genetically engineered trees.
Some researchers ( http: / / www.21cnjy.com )put special bacteria into trees to help them grow faster and produce better wood. Others are trying to create trees that can clean polluted soil.
Meanwhile fruit f ( http: / / www.21cnjy.com )armers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper.
The Pentagon ( ( http: / / www.21cnjy.com )五角大楼，美国国防部所在地) even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.
So far, the poplar, eucalyptus (杨树与桉树), apple and coffee trees are among those being engineered. All these can be done today because we have a better understanding of tree genomes (基因组).
However, some pe ( http: / / www.21cnjy.com )ople fear that the genetically engineered trees will cause dangerous results. They are worried that the new trees will breed with natural species and change the balance of the forest environment.
“It could be destr ( http: / / www.21cnjy.com )uctive,” said Jim Diamond, an environmentalist. “Trees are what is left of our natural environment and home to many endangered species.”
But researchers in ( http: / / www.21cnjy.com )sist that science could give nature a fighting chance against both natural and man-made dangers.
They hope to answ ( http: / / www.21cnjy.com )er the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.
1. Which kind of t ( http: / / www.21cnjy.com )ree is not the ones that scientists are planting in the US
A. Trees that worms can't hurt. B. Trees that can react to a chemical attack.
C. Trees that can ( http: / / www.21cnjy.com ) resist wind better. D. Genetically engineered trees.
2. What caused the American scientists to work on special trees
A. They thin ( http: / / www.21cnjy.com )k science could give nature a fighting chance against both natural and man-made dangers.
B. Great numbers of trees have been lost due to attacks by viruses.
C. Researcher ( http: / / www.21cnjy.com )s successfully introduced seeds designed to resist the virus.
D. Tree genomes ( http: / / www.21cnjy.com )are mapped out so scientists know how to improve trees.
3. Which of the f ( http: / / www.21cnjy.com )ollowing was probably the first kind of trees being engineered
A. Papaya. B. Pine. C. Apple. D. Poplar.
4. Why did critics think engineered trees dangerous Because _______.
A. these trees may eventually destroy the balance of nature
B. everything except trees has been genetically engineered
C. trees are home to many endangered species
D. these trees will replace normal trees
写作能力培养：
◆ 当前，家长普遍认为现在孩子的行为 ( http: / / www.21cnjy.com )习惯没有他们自己小时候的好。请你根据下表所提供的信息写一篇英语文章，简单介绍一下这种现象及出现这种现象的原因，并针对这种现象提一些建议。
现象 家长小时候 懂礼貌、尊重别人、循规蹈矩
现在的小孩 不乐于助人、不尊重别人、崇尚自由。
原因 1．互联网及电视节目中不良信息的影响2．家长和老师过分关注学生成绩，忽视对学生行为习惯的培养
建议 （提出至少两点建议）…
注意：
1．对所给要点逐一陈述，适当发挥，不要简单翻译。
2．词数150左右。开头已经写好，不计入总词数。
Nowadays, a large ( http: / / www.21cnjy.com ) number of children have bad manners while their parents behaved well when they were at the same age. ____________________________________________________
Fifth period
单项选择
1. The Internet has brought ________ big changes in the way we work.
A. about B. out C. back D. up
2. ---How about eight o’clock outside the cinema
---That ________ me fine.
A. fits B. meets C. satisfies D. suits
3. Mr. White ________ at 8:30 for the meeting, but he didn’t show up.
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving
4. ---I would ne ( http: / / www.21cnjy.com )ver come to this restaurant again. The food is terrible!
---_________.
A. Nor am I B. Neither would I C. Same with me D. So do I
5. I do ever ( http: / / www.21cnjy.com )y single bit of housework ________ my husband Bob just does the dishes now and then.
A. since B. while C. when D. as
6. I’m going to the ( http: / / www.21cnjy.com )supermarket this afternoon. Do you have anything ________
A. to be buying B. to buy C. for buying D. bought
7. Jack almost f ( http: / / www.21cnjy.com )ell off the cliff, but managed to _____ until help came.
A. keep on B. catch on C. count on D. hang on
8. __________, she could hardly have any time to play with her little daughter.
A. Busy as she was B. As was she busy
C. was busy she D. As she was busy
9. No matter ( http: / / www.21cnjy.com ) how much money you have, it can’t ________ a healthy body.
A. match B. fit C. defeat D. compare
10. It’s import ( http: / / www.21cnjy.com )ant for us to employ a word or a phrase according to the _______ in language studies.
A. situation B. expression C. condition D. translation
11. It was _____ by the railway board that the cost of rail fares would be increased by ten percent.
A. noticed B. stated C. suggested D. noted
12. ---Jack, how ( http: / / www.21cnjy.com )did it _______ that you made so many mistakes in your homework
---I myself haven’t figured it out yet!
A. bring about B. come about C. occur to D. get down
13. She looks sad. C ( http: / / www.21cnjy.com )ould you please tell me ____ that prevents her from being as happy as before
A. it is what B. it is how C. what it is D. how it is
14. ---Have you forgotten ____ a ruler from Wang Ling
---Oh, yes. But I’ll remember____ it to her tomorrow.
A. borrowing; to return B. borrowing; returning
C. to borrow; to return D. to borrow; returning
15. ---You have promised to go, then why haven’t you got ready
---I ____ you want to go at once.
A. haven’t reali ( http: / / www.21cnjy.com )zed B. didn’t realize C. don’t realize D. won’t realize
16. ---Let’s hurry. Perhaps we can catch the train.
---It’s too late now, _______.
A. otherwise B. therefore C. anyway D. however
17. Some people arg ( http: / / www.21cnjy.com )ue using _____ nature to meet our own needs may spell disaster, unless we start to look around and understand how ______ clean environment benefits us all.
A. /; a B. the; the C. the; a D. a; a
18. Many children think they are___ with when their parents are trying to show concern about them.
A. interfered B. separated C. disturbed D. offended
19. Over years, scie ( http: / / www.21cnjy.com )ntists have made a great _____in the treatment of cancer.
A. break-in B. breakthrough C. breakup D. breakdown
20. Some peopl ( http: / / www.21cnjy.com )e are sitting on the grass; others are walking along the lake, ______ .
A. chatting and to laugh B. to chat and to laugh
C. chatting and laughing D. chatted and laughed
21. We had i ( http: / / www.21cnjy.com )ntended to do everything according to the schedule, but it didn’t ____ as planned.
A. make up B. turn out C. go on D. come up
22. ____ by many wel ( http: / / www.21cnjy.com )l-known experts and film stars, the product was very popular at one time.
A. To advocate B. Having advocated C. Advocating D. Advocated
23. When the headma ( http: / / www.21cnjy.com )ster spoke out his plan, the ____of the students in the class ___ against it.
A. majority; wer ( http: / / www.21cnjy.com )e B. most; were C. most; did D. majority; did
24. All the c ( http: / / www.21cnjy.com )andidates were ______ the street to be named after a great man ______ his great contributions to the city.
A. in favor of; in need of B. in praise of; in favor of
C. in praise of; in need of D. in favor of; in honor of
25. When the stra ( http: / / www.21cnjy.com )nger was dragging him away, the baby reached out his hands in ______ want of his mother.
A. curious B. desperate C. sincere D. serious
26. The explor ( http: / / www.21cnjy.com )er traveled to several remote villages, _____a lot of unusual information.
A. gathering B. having gather C. to gather D. gathered
27. In the question ( http: / / www.21cnjy.com )naire, the subjects are questioned whether they___ banning cars in the city center.
A. agree B. comment C. advocate D. conduct
28. It was more than ( http: / / www.21cnjy.com )he could bear when his old friend ______ him to accept a cigarette.
A. invited B. urged C. persuaded D. agreed
29. Experien ( http: / / www.21cnjy.com )ced as she is, the teacher is still thinking of new ideas about how the new textbooks should be ______.
A. conducted B. made C. sent D. carried
30. ---Where are you going to spend your summer holiday
---I’ll go _____ it is already cool.
A. what B. that C. whether D. where
阅读理解: A 2011 陕西卷D篇
Ever since they were f ( http: / / www.21cnjy.com )irst put on the market in the early 1990s, genetically modified (GM, 转基因) foods have been increasingly developed and marketed in many countries in the word, mainly on the basis of their promise to end the worldwide food crisis. But can GM technology solve world hunger problems Even if it would, is it the best solution
Despite what ( http: / / www.21cnjy.com ) it promises, GM technology actually has not increased the production potential of any corp. In fact, studies show that the most widely grown GM crop. GM soybeans, has suffered reduced productivity. For instance, a report than analysed nearly two decades of research on major GM food crops shows that GM engineering has failed to significantly increase US crop production.
Something else, howe ( http: / / www.21cnjy.com )ver, has been on the rise, While GM seeds are expensive, GM companies tell farmers that they will make good profits by saving money on pesticides（杀虫剂）. On the contrary, US government data show that GM crops in the US have produced an overall increase in pesticide use compared to traditional crops. “The promise was that you could use less chemicals and boost production. But nether is true,” said Bill Christison, President of the US National Farm Coalition.
At the same time ( http: / / www.21cnjy.com ), the authors of the book World Hunger: Twelve Myths argue that there actually is more than enough food in the world and that the hunger crisis is not caused by production, but by problems in food distribution and politics. These indeed deserve our efforts and money. Meanwhile, the rise in food prices results from the increased use of crops for fuel rather than food, according to a 2008 World Bank report.
As a matter o ( http: / / www.21cnjy.com )f fact, scientists see better ways to feed the world. Another World Bank report concluded that GM crops have little to offer to the challenges of worldwide poverty and hunger, because better ways out are available, among which “green” farming is supposed to be the first choice.
57. The author develops the second paragraph mainly _________.
A. by classificati ( http: / / www.21cnjy.com )on B. by comparison C. by example D. by process
58. What does ( http: / / www.21cnjy.com )the underlined word “boost” in the third paragraph probably mean
A. Control. B. Evaluate C. Obtain. D. Increase.
59. GM companies prom ( http: / / www.21cnjy.com )ise farmers that they will benefit from ______________.
A. practicing “green” farming B. use of less chemicals
C. fair distribution of their crops D. using more crops for fuel
60. Which of t ( http: / / www.21cnjy.com )he following best describes the attitude of the author towards GM technology
A. Optimistic B. Defensive C. Disapproving D. Casual
B (2010 山东D篇)
Batteries can p ( http: / / www.21cnjy.com )ower anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri (MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough ( http: / / www.21cnjy.com ) power, we need certain methods with high energy density(密度)”, said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope (放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his rese ( http: / / www.21cnjy.com )arch team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not o ( http: / / www.21cnjy.com )nly in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of ( http: / / www.21cnjy.com )using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. Da ( http: / / www.21cnjy.com )vid Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
71. Which of the following is true of Jae Kwon
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
72. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
73. Liquid semiconductor is used to _________.
A. get rid of th ( http: / / www.21cnjy.com )e radioactive waste B. test the power of nuclear batteries.
C. decrease the si ( http: / / www.21cnjy.com )ze of nuclear batteries D. reduce the damage to lattice structure.
74. According to Jae Kwon, his nuclear battery _______.
A. uses a sol ( http: / / www.21cnjy.com )id semiconductor B. will soon replace the present ones.
C. could be extremely thin D. has passed the final test.
75. The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
任务型阅读信息转换专练
1. It’s urgent now for us to do something effective to prevent this.
→ It’s high time that ( http: / / www.21cnjy.com )we should take some effective ______ to prevent this.
2. A lot of smoke w ( http: / / www.21cnjy.com )as produced by this kind of machine, which caused serious air pollution in the past.
→ A lot of smoke ____ out by this kind of machine caused serious air pollution in the past.
3. The captain played a leading role in the football match.
→ The role the captain ( http: / / www.21cnjy.com ) played in the football game was the most _______.
4. You should be qu ( http: / / www.21cnjy.com )ite clear of what importance your words are to your daughter.
→ You should ( http: / / www.21cnjy.com ) be ______ of how important your words are to your daughter.
5. Whatever you do ( http: / / www.21cnjy.com )in front of her will probably affect what she will be in the future.
→ Whatever you ( http: / / www.21cnjy.com ) do in front of her will probably have a(n) _____ her future.
6. Some of the goods there are cheap while some are not.
→ ______ all goods there are of low prices.
7. Could you ( http: / / www.21cnjy.com ) tell me why you are late again today You should have been here before nine.
→ Could you ( http: / / www.21cnjy.com )tell me the reason why you are late again today You are ____ to be here before nine.
8. My daughter is one ( http: / / www.21cnjy.com )of the cutest girls in the world. She is my pride.
→ My daughter is on ( http: / / www.21cnjy.com )e of the cutest girls in the world. I am _____ of her.
9. Don’t you know that ( http: / / www.21cnjy.com ) the PRC refers to the People’s Republic of China
→ Don’t you k ( http: / / www.21cnjy.com )now that the PRC _______ for the People’s Republic of China
10. My teache ( http: / / www.21cnjy.com )rs always gave me courage to continue working hard when I was in difficulty.
→ My teachers always _ ( http: / / www.21cnjy.com )______ me to continue working hard when I was in difficulty.
11. She recommended t ( http: / / www.21cnjy.com )he basic knowledge of advertisements to me when I first got in the advertisement company.
→ She _____ to me the ( http: / / www.21cnjy.com ) basic knowledge when I began to work in the advertisement company.
12. You should be always with her to make sure that she is safe.
→ You should always _________ her from any danger.
13. We should try not to be tricked by her sweet words.
→ We should try not to _______ for her tricks of sweet words.
14. The new building ( http: / / www.21cnjy.com )was being built — I hope we’ll move into it by the end of the year.
→ The new building ( http: / / www.21cnjy.com ) was under ________ —I hope we’ll move into it by the end of the year.
15. In terms of his proposal, there were pros and cons.
→ ________ his proposal, there were pros and cons.
16. In the late 18 ( http: / / www.21cnjy.com )00s and early 1900s, there were mainly two types of families in the United States: the extended and the nuclear.
→ In the late ( http: / / www.21cnjy.com ) 1800s and early 1900s, there were two _____ types of families in the United States, ______, the extended and the nuclear.
17. The extended fa ( http: / / www.21cnjy.com )mily usually includes grandparents, parents, and children living under the same roof. The nuclear family consists of only parents and children.
→ The extended family ( http: / / www.21cnjy.com ) usually includes grandparents, parents, and children living under the same roof _______ the nuclear family consists of only parents and children.
18. The performer found it hard to play his music.
→ His music presents ( http: / / www.21cnjy.com )a great ______ to the performer, difficult to play.
19. 11.6 percent said that they felt very sleepy during the day.
→ The ______ of the people feeling sleepy at daytime is 11.6.
20. If you have dif ( http: / / www.21cnjy.com )ficulty sleeping at night for a long time, the risk of gaining weight and having a heart attack may increase.
→ There is much _ ( http: / / www.21cnjy.com )_____ that sleepless people easily gain weight and have a heart attack.
PAGEUnit 3 Science versus nature
课题 Unit 3 Science versus nature 课型 复习课
教学目标 明确学习目标，把握考点，突破单词，重点句式
重点 突破单词，重点句式 难点 突破单词，重点句式
教法 讲授法、讨论法、探究法
教学过程 教 学 内 容 个案调整
教师主导活动 学生主体活动
First period Listen and learn: Listen to the ( http: / / www.21cnjy.com )wordlist and try to learn the words and phrases by heart.◆Step 1: ◆Step 2: Personal show●Task 1: Give the following words’ Chinese meaningconsequence n.结果,后果 harvest vt. & vi.收割(庄稼) n.收获;收成transform vt.使改变外观或性质 (尤指向好的方向) ; 使改变形态 concept n.概念;观念breakthrough n.突破 conduct vt.实施;指挥乐队nutrition n.营养 reliable adj.可信赖的,可依靠的brief adj.短时间的,短暂的; 简洁的,简单的 confirm vt. & vi.证实,证明; 确认;使确信●Task 2: Translate the following words戏弄,摆弄;把……当作儿戏toy with n.意图,目的;企图intentionvt.收养,领养;采用,采纳adopt adj.法律许可的,合法的legal义无反顾地进行, 努力推进push ahead with 效仿某人follow in one's footstepsn.总结;概括,概要summary n.资源resourcen.仔细考虑; 必须考虑的因素;体谅,顾及consideration n.利润,收益 vi. & vt.获益;对…有用profit Step 3: Text reading Listen to the text and then finish the following sentencesPara. 1 Different opinions on the first human embryo 1. _______For: Human e ( http: / / www.21cnjy.com )mbryo cloning can produce valuable tissues—2. _____ bone or lung tissue—that could be used to 3. ______ human lives. Against: We may be on the way to producing a real-life Frankenstein’s 4.____. Para. 2 Different opinions on the birth of 5. ________For: People 6. _______ scientists for the scientific breakthrough.Against: Cloning would create more 7._____. Para. 3~5Ian Wilmut’s intentionSeverion Antinori’s intentionResearch efforts should be 8. ______ on creating new tissues and organs for medical use. Cloning human embryos with the intention of destroying them shows no 9. _____ for human life.To be the first to clone a human being.Para. 6 Chinese scientists have focused their efforts on cloning 10. ______, as well as cloned tissues to be used in medical treatment.They have succeeded in cloning cows and goats. Homework: 1. Read the text 2. Try to recite the sentences in step 3-Task 1
板书设计
当堂作业
课外作业
教学札记Unit 3 Science versus nature
课题 Unit 3 Science versus nature 课型 复习课
教学目标 明确学习的目标，掌握重点单词、短语、句型
重点 掌握重点单词、短语 难点 重点句型
教法 讲授法、讨论法、探究法
教学过程 教 学 内 容 个案调整
教师主导活动 学生主体活动
Second period Step 1: Personal show Write down the words according to yourself. Step 2: Language focus◆ 1. intended adj. (为…〉打算的/设计的 intention n.意图；目的；企图 知识探究：My brother intends to study abroad next year. 我弟弟打算明年到国外留学。 He went to P ( http: / / www.21cnjy.com )aris with the intention of learning/ to learn French. 他到巴黎是为了学法语。I have no intention of going to the wedding. 我无意去参加婚礼。The course is intended for intermediate students. 这个课程是为中等水平的学生开设的。The dictionary is intended for children. 这本字典是给小孩用的。His parents intended him to study abroad. 他的父母想让他去国外学习。 题练落实： 1. Small children don’t like books that are _______ for adults. A. promised B. permitted C. admitted D. intended 2. ---I thought you and Peter were going for a bike ride. ---_______, but the ( http: / / www.21cnjy.com )front wheel of my bike is bent and I haven’t had it fixed. A. We intended to B ( http: / / www.21cnjy.com ). I’m sorry C. Well, we went D. She was, and I won’t 3. In the park, ( http: / / www.21cnjy.com ) the number of visitors is tightly _______ to avoid damaging the environment or putting stress on the animals. A. limited B. encouraged C. expected D. intended4. She ________ to catch the early train, but she didn’t get up in time. A. intended B. was intended C. had intended D. was intending◆ 2. adopt vt. &. vi.收养,领养;知识探究：Papers like this tend ( http: / / www.21cnjy.com ) to adopt a very simple writing style.这样的论文往往采用比较朴实的写作风格。 Mr Kern adopted the orphan as his own son. 克恩先生收养了那个孤儿。 Congress has adopted the new measure.国会通过了新的议案。题练落实：1. The old couple de ( http: / / www.21cnjy.com )cided to _______ a boy and a girl though they had three of their own. A. adapt B. bring C. receive D. adopt 2.The poor mother, ( http: / / www.21cnjy.com ) who had been ill in bed, had to have her little son _____ at his uncle's. A. adapted B. adopted C. adjusted D. applied 3. This teaching method is being ____ in several schools to help children with disability obtain higher education. A. attended B. adopted C. adapted D. admitted联想拓宽：adopt 与 adapt All his suggestions have been adopted. 他所有的建议全部被采纳了。 an adopted child养子 The number of adoptions has risen in the past year.adoptive adj.收养的;系的 adopted adj.收养的,领养的 adopt one's method of teaching 接受某人的教学方法 adopt an idea采纳意见 adopt a report接受报告 adopt a child收养孩子
板书设计
当堂作业
课外作业
教学札记Unit 3 Science versus nature
课题 Unit 3 Science versus nature 课型 复习课
教学目标 练习，巩固所学知识
重点 练习，巩固所学知识 难点 练习，巩固所学知识
教法 讲授法、讨论法、探究法
教学过程 教 学 内 容 个案调整
教师主导活动 学生主体活动
Fifth period 单项选 ( http: / / www.21cnjy.com )择1. The Internet has brought ________ big changes in the way we work. A. about B. out C. back D. up2. ---How about eight o’clock outside the cinema ---That ________ me fine. A. fits B. meets C. satisfies D. suits3. Mr. White ________ at 8:30 for the meeting, but he didn’t show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving4. ---I would ( http: / / www.21cnjy.com ) never come to this restaurant again. The food is terrible! ---_________. A. Nor am I B. Neither would I C. Same with me D. So do I5. I do every sin ( http: / / www.21cnjy.com )gle bit of housework ________ my husband Bob just does the dishes now and then. A. since B. while C. when D. as6. I’m going to the s ( http: / / www.21cnjy.com )upermarket this afternoon. Do you have anything ________ A. to be buying B. to buy C. for buying D. bought.7. Jack almost f ( http: / / www.21cnjy.com )ell off the cliff, but managed to _____ until help came. A. keep on B. catch on C. count on D. hang on8. __________, she c ( http: / / www.21cnjy.com )ould hardly have any time to play with her little daughter.A. Busy as she was B. As was she busy C. was busy she D. As she was busy 9. No matter how much money you have, it can’t ________ a healthy body.A. match B. fit C. defeat D. compare10. It’s importan ( http: / / www.21cnjy.com )t for us to employ a word or a phrase according to the _______ in language studies.A. situation B. expression C. condition D. translation11. It was _____ by the railway board that the cost of rail fares would be increased by ten percent. A. noticed B. stated C. suggested D. noted12. ---Jack, how did i ( http: / / www.21cnjy.com )t _______ that you made so many mistakes in your homework ---I myself haven’t figured it out yet!A. bring about B. come about C. occur to D. get down13. She looks sad ( http: / / www.21cnjy.com ). Could you please tell me ____ that prevents her from being as happy as before A. it is what B. it is how C. what it is D. how it is14. ---Have you forgotten ____ a ruler from Wang Ling ---Oh, yes. But I’ll remember____ it to her tomorrow.A. borrowing; to return B. borrowing; returning C. to borrow; to return D. to borrow; returning16. ---Let’s hurry. Perhaps we can catch the train.---It’s too late now, _______.A. otherwise B. therefore C. anyway D. however 17. Some people a ( http: / / www.21cnjy.com )rgue using _____ nature to meet our own needs may spell disaster, unless we start to look around and understand how ______ clean environment benefits us all.A. /; a B. the; the C. the; a D. a; a 18. Many chil ( http: / / www.21cnjy.com )dren think they are___ with when their parents are trying to show concern about them.A. interfered B. separated C. disturbed D. offended 19. Over ye ( http: / / www.21cnjy.com )ars, scientists have made a great _____in the treatment of cancer.A. break-in B. bre ( http: / / www.21cnjy.com )akthrough C. breakup D. breakdown 20. Some people are sitting on the grass; others are walking along the lake, ______ .A. chatting and to laugh B. to chat and to laugh C. chatting and laughing D. chatted and laughed 21. We had intende ( http: / / www.21cnjy.com )d to do everything according to the schedule, but it didn’t ____ as planned.A. make up B. turn out C. go on D. come up 22. ____ by m ( http: / / www.21cnjy.com )any well-known experts and film stars, the product was very popular at one time.A. To advocate B. Having advocated C. Advocating D. Advocated 23. When the headmast ( http: / / www.21cnjy.com )er spoke out his plan, the ____of the students in the class ___ against it.A. majority; were B. most; were C. most; did D. majority; did 24. All the can ( http: / / www.21cnjy.com )didates were ______ the street to be named after a great man ______ his great contributions to the city.A. in favor of; in need of B. in praise of; in favor ofC. in praise of; in need of D. in favor of; in honor of 25. When the ( http: / / www.21cnjy.com ) stranger was dragging him away, the baby reached out his hands in ______ want of his mother.A. curious B. desperate C. sincere D. serious 26. The explorer t ( http: / / www.21cnjy.com )raveled to several remote villages, _____a lot of unusual information.A. gathering B. having gather C. to gather D. gathered 27. In the question ( http: / / www.21cnjy.com )naire, the subjects are questioned whether they___ banning cars in the city center.A. agree B. comment C. advocate D. conduct 28. It was mo ( http: / / www.21cnjy.com )re than he could bear when his old friend ______ him to accept a cigarette.A. invited B. urged C. persuaded D. agreed 29. Experienced as sh ( http: / / www.21cnjy.com )e is, the teacher is still thinking of new ideas about how the new textbooks should be ______.A. conducted B. made C. sent D. carried 30. ---Where are you going to spend your summer holiday ---I’ll go _____ it is already cool.A. what B. that C. whether D. where 阅读理解: A Ever since they ( http: / / www.21cnjy.com )were first put on the market in the early 1990s, genetically modified (GM, 转基因) foods have been increasingly developed and marketed in many countries in the word, mainly on the basis of their promise to end the worldwide food crisis. But can GM technology solve world hunger problems Even if it would, is it the best solution Despite what it ( http: / / www.21cnjy.com ) promises, GM technology actually has not increased the production potential of any corp. In fact, studies show that the most widely grown GM crop. GM soybeans, has suffered reduced productivity. For instance, a report than analysed nearly two decades of research on major GM food crops shows that GM engineering has failed to significantly increase US crop production.Something el ( http: / / www.21cnjy.com )se, however, has been on the rise, While GM seeds are expensive, GM companies tell farmers that they will make good profits by saving money on pesticides（杀虫剂）. On the contrary, US government data show that GM crops in the US have produced an overall increase in pesticide use compared to traditional crops. “The promise was that you could use less chemicals and boost production. But nether is true,” said Bill Christison, President of the US National Farm Coalition.At the same t ( http: / / www.21cnjy.com )ime, the authors of the book World Hunger: Twelve Myths argue that there actually is more than enough food in the world and that the hunger crisis is not caused by production, but by problems in food distribution and politics. These indeed deserve our efforts and money. Meanwhile, the rise in food prices results from the increased use of crops for fuel rather than food, according to a 2008 World Bank report.As a matter of f ( http: / / www.21cnjy.com )act, scientists see better ways to feed the world. Another World Bank report concluded that GM crops have little to offer to the challenges of worldwide poverty and hunger, because better ways out are available, among which “green” farming is supposed to be the first choice.57. The author develops the second paragraph mainly _________.A. by classification ( http: / / www.21cnjy.com ) B. by comparison C. by example D. by process 58. What does the u ( http: / / www.21cnjy.com )nderlined word “boost” in the third paragraph probably mean A. Control. B. Evaluate C. Obtain. D. Increase. 59. GM companies promise farmers that they will benefit from ______________. A. practicing “green” farming B. use of less chemicalsC. fair distri ( http: / / www.21cnjy.com )bution of their crops D. using more crops for fuel 60. Which of th ( http: / / www.21cnjy.com )e following best describes the attitude of the author towards GM technology A. Optimistic B. Defensive C. Disapproving D. CasualB Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri (MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.“To provide enough po ( http: / / www.21cnjy.com )wer, we need certain methods with high energy density(密度)”, said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope (放射性同位素) battery can provide power density that is much higher than chemical batteries.”Kwon and his res ( http: / / www.21cnjy.com )earch team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”His new idea i ( http: / / www.21cnjy.com )s not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.“The key part of ( http: / / www.21cnjy.com ) using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.71. Which of the following is true of Jae Kwon A. He teaches chemistry at MU. B. He developed a chemical battery.C. He is working on a nuclear energy source. D. He made a breakthrough in computer engineering.72. Jae Kwon gave examples in Paragraph 4_________.A. to show chemical batteries are widely applied. B. to introduce nuclear batteries can be safely used.C. to describe a nuclear-powered system. D. to introduce various energy sources. 73. Liquid semiconductor is used to _________.A. get rid of the radioactive waste B. test the power of nuclear batteries.C. decrease the siz ( http: / / www.21cnjy.com )e of nuclear batteries D. reduce the damage to lattice structure.74. According to Jae Kwon, his nuclear battery _______.A. uses a solid semi ( http: / / www.21cnjy.com )conductor B. will soon replace the present ones.C. could be extremely thin D. has passed the final test.75. The text is most probably a ________.A. science news report B. book review C. newspaper ad D. science fiction story 任务型阅读信息转换专练1. It’s urgent now for us to do something effective to prevent this.→ It’s high tim ( http: / / www.21cnjy.com )e that we should take some effective ______ to prevent this. 2. A lot of smo ( http: / / www.21cnjy.com )ke was produced by this kind of machine, which caused serious air pollution in the past.→ A lot of smoke ____ out by this kind of machine caused serious air pollution in the past. 3. The captain played a leading role in the football match.→ The role the captai ( http: / / www.21cnjy.com )n played in the football game was the most _______. 4. You shoul ( http: / / www.21cnjy.com )d be quite clear of what importance your words are to your daughter.→ You should be ______ of how important your words are to your daughter.5. Whatever you ( http: / / www.21cnjy.com ) do in front of her will probably affect what she will be in the future. → Whatever you d ( http: / / www.21cnjy.com )o in front of her will probably have a(n) _____ her future 6. Some of the goods there are cheap while some are not.→ ______ all goods there are of low prices.7. Could you ( http: / / www.21cnjy.com ) tell me why you are late again today You should have been here before nine.→ Could you tell m ( http: / / www.21cnjy.com )e the reason why you are late again today You are _______ to be here before nine. 8. My daughter is one ( http: / / www.21cnjy.com )of the cutest girls in the world. She is my pride.→ My daughter is o ( http: / / www.21cnjy.com )ne of the cutest girls in the world. I am _____ of her. 9. Don’t you know th ( http: / / www.21cnjy.com )at the PRC refers to the People’s Republic of China → Don’t you know that ( http: / / www.21cnjy.com ) the PRC _______ for the People’s Republic of China 10. My teach ( http: / / www.21cnjy.com )ers always gave me courage to continue working hard when I was in difficulty.→ My teacher ( http: / / www.21cnjy.com )s always _______ me to continue working hard when I was in difficulty. 11. She recommended t ( http: / / www.21cnjy.com )he basic knowledge of advertisements to me when I first got in the advertisement company.→ She _____ to me the basic knowledge when I began to work in the advertisement company 12. You should be always with her to make sure that she is safe.→ You should always _________ her from any danger. 13. We should try not to be tricked by her sweet words.→ We should try not to _______ for her tricks of sweet words. 14. The new buildin ( http: / / www.21cnjy.com )g was being built — I hope we’ll move into it by the end of the year.→ The new bu ( http: / / www.21cnjy.com )ilding was under ________ —I hope we’ll move into it by the end of the year. 15. In terms of his proposal, there were pros and cons.→ ________ his proposal, there were pros and cons. 16. In the late 1800s and early 1900s, there were mainly two types of families in the United States: the extended and the nuclear.→ In the late 1800s and early 1900s, there were two _____ types of families in the United States, ______, the extended and the nuclear.17. The exten ( http: / / www.21cnjy.com )ded family usually includes grandparents, parents, and children living under the same roof. The nuclear family consists of only parents and children.→ The extended ( http: / / www.21cnjy.com )family usually includes grandparents, parents, and children living under the same roof _______ the nuclear family consists of only parents and children. 18. The performer found it hard to play his music.→ His music pres ( http: / / www.21cnjy.com )ents a great ______ to the performer, difficult to play. 19. 11.6 percent said that they felt very sleepy during the day.→ The ______ of the people feeling sleepy at daytime is 11.6. 20. If you have diff ( http: / / www.21cnjy.com )iculty sleeping at night for a long time, the risk of gaining weight and having a heart attack may increase. → There is much ______ that sleepless people easily gain weight and have a heart attack.
板书设计
当堂作业
课外作业
教学札记Unit 3 Science versus nature
课题 Unit 3 Science versus nature 课型 复习课
教学目标 把握考点，规范写作
重点 重点词汇，句型 难点 规范写作
教法 讲授法、讨论法、探究法
教学过程 教 学 内 容 个案调整
教师主导活动 学生主体活动
Forth periodProject 1: Man versus nature For a long time, ( http: / / www.21cnjy.com ) our environment has been damaged because humans have been careless. People have harmed nature through agriculture, fishing, hunting and tourism. We further damage Earth by building new channels in the sea and factories on the land, and by creating pollution with chemical waste. We will some day destroy the planet we live on if we continue in this way.However, if we f ( http: / / www.21cnjy.com )ocus only on conservation, then people may suffer. Not everything that is best for nature is good for people. Would anyone say that development should be stopped in favor of nature From the point of view of some people, we are only doing what humans have always done, using nature to meet our own needs. Other people argue that such thinking may cause a catastrophe, unless we start to look around and understand how a clean environment benefits us all. After decades of ( http: / / www.21cnjy.com )destroying nature and using up natural resources, many developed nations are now concerned about saving nature rather than developing or destroying it. However, many poorer nations must focus on meeting the everyday needs of their people. In doing so, they are using up natural resources at a fast pace. They have not yet seen the effects of the careless use of the environment like many wealthy nations have. Often they do not realize that the choices they make are bad for the environment. Should they be blamed for destroying hundreds of thousands of acres of rainforest if it means a better income for their people The developed and developing countries of the world need to work together to make sure that people enjoy healthy and happy lives, without the environment around them suffering. It should not be a q ( http: / / www.21cnjy.com )uestion of humans winning and nature losing. Humans can only really win by protecting nature. After all, food has to be produced in a healthy, natural system, and we all need clean air to breathe and pure water to drink. It is mankind's responsibility to find answers that are good for everyone, and everything.Project 2: GM food: hope or danger In recent years, there has been great progress in the study of genetics. With this progress, doors have been opened up to technologies that never existed before. While many people are excited about these new technologies, these same technologies frighten others. Nowhere is this truer than with genetically modified (GM) food. There are two ways in which a plant or an animal can be genetically modified. First, new material can be inserted into its DNA to give the plant or animal qualities which it would never have in nature. Second, material can be taken from the DNA of a plant or an animal in order to remove qualities which are not desired. One aim of GM ( http: / / www.21cnjy.com )research is to produce food which will make us healthier. So far, this technology has been used to produce plants which are better able to defend themselves against pests and disease. Supporters of GM food argue that GM plants are healthier and have larger harvests. While there has been research in GM animals such as pigs, no GM meat is being sold at present. Many questions have ( http: / / www.21cnjy.com )been raised about GM food. No one really knows whether it is safe for animals or humans to eat. Scientists admit that more tests should be done on GM food. Research has been limited to increasing production profits, rather than making sure that GM foods are safe. GM food could therefore be dangerous to eat. There is also a ques ( http: / / www.21cnjy.com )tion as to whether GM plants are safe for the environment. Since GM crops are planted outside, they are part of the food chain—insects and other animals eat them or use their products, and these insects and animals will be eaten by yet other animals. No one knows what effects the GM material might have on the food chain. Since no one reall ( http: / / www.21cnjy.com )y knows whether GM food is safe, many countries have hesitated to give permission for the production of GM foods, as they would rather be cautious with this new technology.Step 1: Read and learn ◆ Listen to the text and grasp the general spirit of the text Language focus: ◆ 1. consider vt. 考虑；认为考虑；认为知识探究：I’m considering changing my job. 我在考虑还份工作。We’re considering selling the house. 我们正在考虑卖掉房子。I consider what he said as reasonable. 我认为他说的有道理。 She considers it impolite to talk while eating. 她认为吃饭的时候说话是不礼貌的。He was generally considered to have invented the first computer.人们普遍认为是他发明了第一台计算机。We consider Jack to have let out the secret. 我们认为是杰克泄露了秘密。归纳整理：consider作“考虑”讲时,其后可接名词、代词、动名词或宾语从句,也可接由how, what等引导的不定式,但不可直接接不定式。consider + n. / pron. consider + doing. consider +从句consider +疑问词+to do consider为“认为”时,后接that从句,复合宾语或带不定式的复合结构,但不可接动名词,结构表示如下：consider + that...consider +宾语+(to be/ as)+n./adj.consider + sb. to have done sth.consider + it + adj./ n.(+for sb.) to do sth.题练落实：B) 1. All the staff i ( http: / / www.21cnjy.com )n our company are considering _____ to the city center for the fashion show. A. to go B. going C. to have gone D. having goneB) 2. Columbus was considered _______ the great land of America. A. to discover B. to ( http: / / www.21cnjy.com ) have discovered C. discovering D. having considered B) 3. ---I can’t stand Jack. He is too inefficient! ---Nobody is perfect. Try to be _______ to others. A. considering B. considerate C. considerable D. considered B) 4. _________ his high social status, it is really hard for us to _____ his joining us in going west to teach children there.A. Considered; prevent from B. Considering; opposeC. To consider; persuade D. Being considered; object toB) 5. He wasn't made ( http: / / www.21cnjy.com ) president of the board of directors, ________ not very popular with all its members.A. to be consid ( http: / / www.21cnjy.com )ered B. being considered C. considering D. having considered解析：句意：他未被任命为董事会主席 ( http: / / www.21cnjy.com )，因为人们认为他不太受成员欢迎。因为句子的主语与非谓语动词是动宾关系，应用现在分词被动式作原因状语。C、D项为主动形式，不定式结构表示将来的动作，与题意不符。C) 6. The car burns ( http: / / www.21cnjy.com ) more fuel, but _____ all things into consideration, it's still a good car. A. taken B. having taken C. taking D. to take D) 7. You surely can't ( http: / / www.21cnjy.com ) _______ him to be a selfish man, for he is ready to help anyone in trouble. A. doubt B. remain C. advise D. consider B) 8. Have you considered ________ him for help A. ask B. asking C. to ask D. asked D) 9. his ine ( http: / / www.21cnjy.com )xperience, he has done a very good job, so you should give him something as a (an) _________. A. Considered; ( http: / / www.21cnjy.com )award B. Given; reward C. Regard; gift D.Considering; prize A) 10. It alwa ( http: / / www.21cnjy.com )ys made us embarrassed that when we tried to greet him politely, we were still considered _______ . A. to be rude B. bein ( http: / / www.21cnjy.com )g rude C. to being rude D. to have been rude解析: 此句中consider意为“认为”，其结构为：consider...(to be)+adj./n.联想拓宽：consider的名词形式是consideration,与其相关的常用词组有：out of consideration for出于对……的考虑;体谅 be worthy of consideration值得考虑be under consideratio ( http: / / www.21cnjy.com )n在讨论中 take sth. into consideration考虑到,顾及,把…考虑在内have considerat ( http: / / www.21cnjy.com )ion for others为别人着想 give one's careful consideration加以慎重考虑 in consideration of考虑到;作为对……的回报(= in return for) considerate adj.体贴的;考虑周全的 considering prep. / conj.考虑到……;就……而言(3)consider...as...表示“把……当作……来看待”, 此外以下结构也可以表示这一含义：regard. . . as. . . / respect. . . as. . . / accept. . . as. . . / recognize. . . as /think of... as: / thin ( http: / / www.21cnjy.com )k. . . to be / have. . . as / look on. . . as / treat. . . as considerate adj. 体贴的,考虑周到的considerable adj. 相当多的,相当大的consideration 考虑,体贴,报酬considering prep. & conj. 考虑,就…而言be considerate towards sb. 对…体贴 be considerate to do sth. 做…考虑周到的in consideration of 作为对…的回报,考虑到take … into consideration (account) 考虑某事物,体谅某事物under consideration 在考虑中 阅读理解：Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US.When 40 per c ( http: / / www.21cnjy.com )ent of Hawaii's US$14 million-a-year papaya (木瓜)industry was destroyed by a virus five years ago, work began on creating genetically engineered (转基因的) trees.Researchers successful ( http: / / www.21cnjy.com )ly introduced seeds that were designed to resist the virus. Since then, more and more people have been testing genetically engineered trees.Some researchers ( http: / / www.21cnjy.com )put special bacteria into trees to help them grow faster and produce better wood. Others are trying to create trees that can clean polluted soil.Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper.The Pentagon (五角大楼， ( http: / / www.21cnjy.com )美国国防部所在地) even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.So far, the poplar, eucalyptus (杨树与桉树), apple and coffee trees are among those being engineered. All these can be done today because we have a better understanding of tree genomes (基因组).However, some people fear that the genetically engineered trees will cause dangerous results. They are worried that the new trees will breed with natural species and change the balance of the forest environment.“It could be destructive,” said Jim Diamond, an environmentalist. “Trees are what is left of our natural environment and home to many endangered species.”But researchers insist ( http: / / www.21cnjy.com ) that science could give nature a fighting chance against both natural and man-made dangers.They hope to answer ( http: / / www.21cnjy.com ) the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.C) 1. Which kin ( http: / / www.21cnjy.com )d of tree is not the ones that scientists are planting in the US A. Trees that worms can't hurt.B. Trees that can react to a chemical attack.C. Trees that ( http: / / www.21cnjy.com )can resist wind better. D.Genetically engineered trees.B) 2. What caused the American scientists to work on special trees A. They think science ( http: / / www.21cnjy.com ) could give nature a fighting chance against both natural and man-made dangers. B. Great numbers of trees have been lost due to attacks by viruses. C. Researchers succe ( http: / / www.21cnjy.com )ssfully introduced seeds designed to resist the virus.D. Tree genomes ( http: / / www.21cnjy.com ) are mapped out so scientists know how to improve trees.A) 3. Which of the fo ( http: / / www.21cnjy.com )llowing was probably the first kind of trees being engineered A. Papaya. B. Pine. C. Apple. D. Poplar.A) 4. Why did ( http: / / www.21cnjy.com ) critics think engineered trees dangerous Because _______.A. these trees may eventually destroy the balance of natureB. everything except trees has been genetically engineeredC. trees are home to many endangered species D. these trees will replace normal trees 写作能力培养：◆当前，家长普遍认为现在孩子的行为 ( http: / / www.21cnjy.com )习惯没有他们自己小时候的好。请你根据下表所提供的信息写一篇英语文章，简单介绍一下这种现象及出现这种现象的原因，并针对这种现象提一些建议。现象家长小时候懂礼貌、尊重别人、循规蹈矩现在的小孩不乐于助人、不尊重别人、崇尚自由。原因1．互联网及电视节目中不良信息的影响2．家长和老师过分关注学生成绩，忽视对学生行为习惯的培养建议（提出至少两点建议）…注意：1．对所给要点逐一陈述，适当发挥，不要简单翻译。2．词数150左右。开头已经写好，不计入总词数。Nowadays, a lar ( http: / / www.21cnjy.com )ge number of children have bad manners while their parents behaved well when they were at the same age. ___________________________________________________________________________________________________Nowadays, a large ( http: / / www.21cnjy.com ) number of children have bad manners while their parents behaved well when they were at the same age.When their parents wer ( http: / / www.21cnjy.com )e young, they behaved well, having good manners, respecting others and obeying rules of all kinds. On the contrary, children now are not ready to help others. Actually, they don’t show respect for others and they express themselves and behave freely. The reasons a ( http: / / www.21cnjy.com )re related to many factors, one of which is the ill information on the Internet and in TV programmes because it has a bad influence on children. Worse still, parents pay too much attention to their scores, ignoring the fact that children’s behaviors should be their greatest concern. Considering the seriousness of this problem, effective measures should be taken. In my opinion, parents and teachers are supposed to set an example of good behaviors to children as they are role models to them. Meanwhile, the information on the Internet or TV should be under strict control. Only in these ways can we help children develop good behaviors.
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