大版（2019） 选择性必修一Unit 3 Conservation单元基础巩固（含解析）

Unit 3 Conservation
学校:___________姓名：___________班级：___________考号：___________
一、阅读理解（本大题共4小题，共8.0分）
A
In both Africa and Asia elephants are being threatened by changes in their natural habitats. People are moving into the elephants' habitats and endangering their survival. In the country of Sri Lanka, there is one place where elephants are not only protected but also respected. It is called Elephant Transit Home (ETH).
Set up in 1995, the ETH aims to protect and care for baby elephants that are found injured or living without their mothers in the wild. Every year about 30 baby elephants in Sri Lanka need help. Many are brought to the ETH. There they are given food, shelter, and medical care. Most importantly, they are given the chance to be with other elephants and become part of a herd(兽群).
A day at the ETH begins early in the morning when the baby elephants are given their first feeding of milk. During the day, each baby will drink an average of 13 gallons of milk. Older elephants are fed mostly coconut leaves and other native plants. There are no boundaries in the area for the baby elephants as they have the freedom to walk wherever they want. The cost of caring for the baby elephants is high. The ETH spends about $ 125,000 each year on powdered milk for the baby elephants.
At the ETH, workers try to reduce human connections with the elephants. They also try to increase bonds(联系) between the elephants. It usually takes three years for a baby elephant to be set free into its natural habitat. The elephants are sent back to the wild together with other orphans with whom they have bonded. This program helps them return to the wild as members of a herd that will communicate with each other and take care of each other.
The ETH is considered as one of the best animal protection sites in the world. Not only are the elephants cared for, but they are treated with respect. Most importantly, they go back to live in the wild, where they belong.
1. What do we know about the ETH
A. It helps to keep baby elephants safe.
B. It saves hundreds of elephants every year.
C. It aims to save elephants from extinction.
D. It changes elephants habitats for the better.
2. What does the underlined word "boundaries" in paragraph 3 mean
A. Extreme climates. B. Dividing lines.
C. Limited foods. D. Endangered species.
3. Why do the workers reduce human connections with the elephants
A. To train them to stay away from hunters.
B. To provide them with more living space.
C. To study them better in a natural environment.
D. To help them make it in the wild as a herd.
4. What's the purpose of the text
A. To show the ways of wildlife protection.
B. To explain the threat faced by baby elephants.
C. To introduce an animal protection organization.
D. To persuade the readers to protect elephants.
二、阅读七选五（本大题共5小题，共10.0分）
Children should spend at least one hour playing in nature each day, according to the Wildlife Trusts. (1) It is now calling on the government to include nature time into daily school life.
(2) The 451 students in the study were 8 or 9 years of age. They were interviewed before and after nature activities. The activities were run by the Wildlife Trusts over the course of several weeks, such as learning about plants and trees.
The children showed a great increase in personal health. (3) 90 percent said they learned something new about the natural world; 79 percent felt the experience would help their schoolwork; 81 percent said they had better relationships with their teachers. (4)
However, parents aren't giving kids that time. (5) A 2017 report found that less than 10 percent British kids enjoyed themselves in nature, compared to 40 percent of adults when they were younger years ago. To improve the situation, the organization is calling on the government to free up a daily hour for nature time for kids.
A. Parents care much about their kids' nature time.
B. And the time has been reduced greatly in recent years.
C. 79 percent mentioned they would believe more in themselves.
D. The call comes from a study by University College London.
E. It is an organization which speaks for 2,300 nature protection areas.
F. The students were asked to study in University College London for one day.
G. And they also showed a sense of connection with the natural world and high levels of enjoyment.
5. A. A B. B C. C D. D E. E F. F G. G
6. A. A B. B C. C D. D E. E F. F G. G
7. A. A B. B C. C D. D E. E F. F G. G
8. A. A B. B C. C D. D E. E F. F G. G
9. A. A B. B C. C D. D E. E F. F G. G
三、完形填空（本大题共15小题，共22.5分）
Pamela Malhotra and her husband Anil K. Malhotra have spent the last 25 years buying abandoned (废弃的) agricultural land and reforesting it. They want to (10) the land to a rainforest for elephants, birds and other (11)
The couple have spotted more than 300 kinds of birds as well as many (12) and endangered animal species. But, this was not the (13) in 1991 when Pamela and Anil came to this part of the country. "When we came here, it was a (14) . The owner wanted to sell the land because he couldn't grow anything else here," says Anil. "For me and Pamela, this was what we were (15) all our life."
When the Malhotras came to India, the pollution (16) them. "That was when we decided to (17) something to turn the land into the forests in India. We have (18) that the shortage of fresh water will be a (19) for the whole world. Protecting the forest land and wildlife habitat, where vital water resources have their origin, is a good way to (20) ourselves," explains Anil. After they bought the first 55 acres, they (21) to plant trees. Soon, they bought the land nearby as well.
Stopping poaching (偷猎) was also a(n) (22) . Pamela said, "There are times when I (23) with poachers. I was even in great danger once. (24) , I hope what we are doing now will make a difference to animals."
10. A. sell B. return C. move D. offer
11. A. plants B. products C. animals D. humans
12. A. unusual B. new C. beautiful D. lazy
13. A. point B. design C. land D. scene
14. A. habitat B. park C. field D. wasteland
15. A. seeking for B. thinking about
C. putting forward D. looking after
16. A. interested B. convinced C. shocked D. embarrassed
17. A. do B. add C. finish D. drag
18. A. claimed B. realized C. suggested D. regretted
19. A. comfort B. warning C. concern D. failure
20. A. control B. thank C. equip D. save
21. A. began B. hesitated C. hoped D. chose
22. A. enjoyment B. answer C. challenge D. reality
23. A. unite B. communicate C. work D. fight
24. A. However B. Therefore C. Besides D. Moreover
四、选词填空-句子（本大题共1小题，共10.0分）
25.
be related to; wipe it out; be to blame; have a role;
stressed out; sum up; set out; for instance
(1) We're optimistic that China will contain the spread of COVID-19 and eventually .
(2) These companies are encouraged to participate in construction projects including those 5G, Al and green energy.
(3) Until now scientists have very little clear evidence that the drug in curing lung cancer.
(4) When we're tired or , home is always a shelter for us to have a rest.
(5) Don't always blame your own failure on others. Sometimes you yourself .
(6) Armed with the information you have gathered, you can to prepare your business plan.
五、单句语法填空（本大题共8小题，共8.0分）
26. With mobile payment becoming popular, it is frequent to see ______ (consumer) pay for their purchases by smartphones.
27. Peter finally decided to go ahead with the experiment even though he was aware ______ the risk.
28. When exposed to danger and conflict, men tend to have higher blood pressure, feeling nervous and ______ (anxiety).
29. In Australia there are over 140 species of snakes, many of which are ______ (incredible) dangerous.
30. People have set up conservation areas to protect wild animals, especially the ______ (endanger) species.
31. We believe the time and hard work ______ (involve) in completing such an important project are worthwhile.
32. After the financial crisis, this country took immediate steps ______ (restore) its economy.
33. The number of deaths caused by traffic accidents ______
(decrease) by 30%, compared with that of last year.
六、语法填空（本大题共2小题，共30.0分）
34. Extinctions are not unusual in our Earth's history. In fact, over 90 percent of all species that ever lived are now (1) (extinction). In the last 500 milion years, there has been a time when (2) life on Earth has almost ended. The reasons for extinctions are varied, such as volcanic eruptions, global warming, etc. It (3) (claim) that we are now entering (4) sixth mass extinction of the Earth. This time, human activity will be to blame.
Although species die out naturally, the rate at which this is happening now is cause for concern. According to some scientists, human activity (5) (affect) negatively all other species on Earth, causing species (6) (die) out 1,000 times faster than normal. There are various reasons why so many species are dying out: air and water pollution, forests (7) (destroy), factory farming and overfishing.
If a sixth mass extinction occurs, scientists believe that up to three quarters of all species on Earth could die out and human beings would also be (8) risk. However, it is not yet too late if we take action now. This would mean we have to (9) (significant) change the way we live. For instance, we need to take steps to save endangered species, change how we work and travel, and improve our farming methods. In short, we should stop destroying the planet and start to protect (10) if we want to survive.
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35. Currently, many major cities in China are carrying out the waste-sorting policy, with the purpose of changing the traditional waste (1) (treat) and protecting this delicate environment we live in. What (2) encouraging measure!
The new method, (3) (compare) with the traditional way of collecting wastes, has brought a variety of benefits. First, wastes (4) (send) to different factories according to their classification rather than landfills, (5) they would be simply burnt and buried. What's more, waste classification not only cuts the spending (6) treating wastes, but also brings some interests. Recyclable wastes, such as paper, glass and plastic, can be reused after (7) (process) in related factories, while other wastes can be turned into the valuable.
As a result, waste classification should be (8) (immediate) carried out as an effective means of environmental protection. The citizens are supposed (9) (take) action, sorting wastes before they throw them away. Meanwhile, it would be rather (10) (help) if we could influence as many people around us as possible.
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七、单词拼写-单句（本大题共6小题，共6.0分）
36. The u______ situation required that we should make an immediate decision.
37. It is reported that, in many cities in China, shared bikes have become a popular means of t______.
38. Goals have to be r______ so that students can reach them and feel a sense of achievement.
39. Susan's voice still remained calm even if she was getting ______ (生气).
40. Chemical pollution will bring about a ______ (威胁) to agriculture and the food chain, and consequently to human health.
41. We should sort out ______ (可回收利用的) materials from garbage, so we can ______ (再利用) them and reduce pollution.
八、完成句子（本大题共7小题，共14.0分）
42. 这家餐馆因其种类繁多、适合各种口味的食物而变得受欢迎。
（suit；varied）
The restaurant has become popular for its wide variety of foods that __________.
43. 因为科技的快速发展，你们这一代的青少年被网络世界所吸引不足为奇。(it作形式主语；unusual)
Due to the rapid development of technology, __________
of your generation to be attracted to the online world.
44. 谷爱凌在北京2022年冬奥会上获得冠军，她是最具天赋的滑雪运动员之一。（定语从句）
Gu Ailing, __________ at the Beijing 2022 Olympic Winter Games, is one of the most gifted skiers.
45. 我们都能尽自己的职责来保护环境。比如，我们可以选择可重复使用的物品而不是一次性的物品。(do one's part)
We all can ______ protect the environment. For instance, we can choose reusable items instead of disposable ones.
46. 随着空气污染变得越来越严重，政府鼓励市民从传统汽车转向新能源汽车。(with复合结构；switch)
__________ more and more serious, the government encourages citizens to __________ new energy vehicles.
47. 不要浪费时间在忌妒他人上，因为生活是一场漫长的比赛，你最终唯一的对手就是你自己。（定语从句；opponent)
Don't waste time on envy, because life is a long race __________ in the end.
48.
假定你是某国际中学的学生，请你以Wildlife Protection为题进行一次演讲，呼吁广大师生采取行动来保护野生动植物。
Good morning, everyone! (1) (我很荣幸站在这里) and give you a short speech. (2) (今天我的题目是“野生动植物保护”).
Nowadays many wildlife species (3) (正以惊人的速度灭绝) (4) (因为非法捕猎), pollution and (5) (栖息地的丧失). In order to save rare wildlife from extinction, the authorities (6) (已经建立了野生动植物保护区) and taken measures to (7) (使人们意识到) the importance of protecting the endangered wildlife. But please remember: it is (8) (地球上的每一个人) that (9) (有责任保护野生动植物). We can volunteer, donate money and so on. (10) (只有当我们学会与自然和谐相处时) can we protect the wildlife!
Thank you very much!
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答案和解析
1~4.【答案】A、B、D、C
【解析】1. 【文章大意】本文介绍了一个名为ETH的组织，它旨在保护和培养那些在野外受伤或失去母亲的小象。ETH被认为是世界上最好的动物保护基地之一。在那里大象不仅受到照顾，而且受到尊重。
根据第二段中的Every year about 30 baby elephants in Sri Lanka need help. Many are brought to the ETH.（斯里兰卡每年大约有30头小象需要帮助。许多小象被带到ETH。）以及There they are given food, shelter, and medical care.（在那里，他们得到了食物、住所和医疗。）可知，斯里兰卡每年大约有30头小象需要帮助，尽可能多的小象被带到ETH，在那里它们得到食物、住所和医疗照顾。所以ETH有助于保护小象的安全。故选A。
2. 根据划线词所在句中as they have the freedom to walk wherever they want（小象们在这个区域没有边界，它们可以自由走动。）可知，划线词boundaries意为“边界线”。故选B。
3. 根据第四段中的This program helps them return to the wild as members of a herd that will communicate with each other and take care of each other.（这个项目帮助它们回到野外，作为一个群体的成员，它们可以互相交流，互相照顾。）可知，工作人员减少人类与大象之间的联系，以帮助它们作为一个群体在野外生存。故选D。
4. 通读全文，结合第一段中的In the country of Sri Lanka, there is one place where elephants are not only protected but also respected.（在斯里兰卡，有一个地方，大象不仅受到保护，而且受到尊重。）以及It is called Elephant Transit Home (ETH).（它被称为大象过境之家（ETH））可知，本文主要介绍斯里兰卡的动物保护组织大象过境之家（ETH）。故选C。
5~9.【答案】E、D、G、C、B
【解析】1. 【文章大意】本文主要针对目前孩子们在大自然中玩耍和消磨的时间越来越少的问题，呼吁政府为孩子们每天腾出一小时的自然时间，并将此纳入日常学校生活，同时讲述了参与自然活动对孩子们的好处。
根据下文It is now calling on the government to include nature time into daily school life.（现在它正在号召政府把自然时间纳入日常学校生活。）可知，lt指代的是the Wildlife Trusts，E项（这是一个代表2300个自然保护区的组织。）是对这一组织的进一步解释说明。故选E。
2. 上文It is now calling on the government to include nature time into daily school life.（现在它正在号召政府把自然时间纳入日常学校生活。）中的lt is now calling on...和D项（这个号召来自伦敦大学学院的一项研究。）中的The calling相呼应，D项对这一号召进一步解释。故选D。
3. 根据上文The children showed a great increase in personal health.（孩子们的个人健康状况有了很大改善。），G项（他们也表现出与自然世界的联系和高层次的享受。）承接上文，G项的they also showed和上文的The children showed相呼应，符合题意。故选G。
4. 根据上文中的90 percent said they learned something new about the natural world; 79 percent felt the experience would help their schoolwork; 81 percent said they had better relationships with their teachers.（90%的人说他们学到了一些关于自然界的新知识；79%的人认为这种经历会帮助他们完成学业；81%的人说他们与老师的关系更好。）可知，C项（79%的人表示，他们会更加相信自己。）中的79 percent呼应上文，符合语境。故选C。
5. 根据上文中的However, parents aren't giving kids that time（然而，父母没有给孩子时间）和下文A 2017 report found...for kids（2017年的一份报告发现，只有不到10%的英国孩子喜欢大自然，而几年前，只有40%的成年人喜欢大自然。为了改善这种状况，该组织呼吁政府每天腾出一个小时给孩子们做自然活动。）可知，B项（近年来，时间大大缩短。）中的the time和上文中的that time相呼应。故选B。
10~24.【答案】B、C、A、D、D、A、C、A、B、C、D、A、C、D、A
【解析】1. 【文章大意】本文讲述了一对夫妇在过去的25年里，购买废弃的农业用地，并植树造林的故事。
句意：他们想把这片土地归还给大象、鸟类和其他生物赖以生存的生物多样性雨林。A.sell卖；B.return归还；C.move移动；D.offer提供。根据上句中Malhotra have spent the last 25 years buying abandoned (废弃的) agricultural land and reforesting it.（过去25年来，Malhotra一直在购买废弃的农业用地，并重新造林。）可知，收购废弃的土地，归还给大象、鸟类和其他生物。故选B。
2. 句意：他们想把这片土地归还给大象、鸟类和其他生物赖以生存的生物多样性雨林。A.plants植物；B.products产品；C.animals动物；D.humans人类。根据for elephants, birds and other可知，此处指其他动物。故选C。
3. 句意：这对夫妇发现了300多种鸟类以及许多珍稀濒危动物。A.unusual罕见的；B.new新的；C.beautiful美丽的；D.lazy懒惰的。濒危动物应该是罕见动物。故选A。
4. 句意：1991年，当帕梅拉和阿尼尔来到这个国家的这个地区时，情况并非如此。A.point观点；B.design设计；C.land陆地；D.scene场面，情景。这里指来到这个地区时的场面、情况。故选D。
5. 句意：当我来到这里的时候，那是一片荒地。A.habitat栖息地；B.park公园；C.field领域；D.wasteland荒地。根据第一段第二句Malhotra have spent the last 25 years buying abandoned (废弃的) agricultural land and reforesting it.可知，这里指被遗弃的荒地。故选D。
6. 句意：对我和帕梅拉来说，这就是我们一生所追求的。A.seeking for寻找，追求；B.thinking about考虑；C.putting forward提出；D.looking after照顾。这里指一生所追求的。故选A。
7. 句意：当Malhotra夫妇来到印度时，污染使他们感到震惊。A.interested使感兴趣；B.convinced使确信；C.shocked使震惊；D.embarrassed（使）尴尬。污染严重肯定会使人们感到震惊。故选C。
8. 句意：就在那时，我们决定做一些事情来恢复印度的森林。A.do做；B.add添加；C.finish完成；D. drag拖拉。根据下文可知，他们决定做些事情来恢复印度的森林。故选A。
9. 句意：我们已经意识到淡水短缺将是全世界关注的问题。A.claimed声称；B.realized意识到；C.suggested建议；D.regretted感到遗憾。根据空后的内容可知，这是他们已经意识到的事情。故选B。
10. 句意同上。A.comfort舒适，安慰；B.warning警告；C.concern担忧，关心；D.failure失败。缺少淡水当然是一个担忧。故选C。
11. 句意：保护森林土地和野生动物栖息地是拯救我们自己的唯一方法，因为它们是重要水源的来源。A.control控制；B. thank感谢；C.equip装备；D.save挽救。保护森林土地和野生动物栖息地是为了拯救自己。故选D。
12. 句意：在买下第一块55英亩土地后，他们开始种树。A.began开始；B.hesitated犹豫；C.hoped希望；D.chose选择。他们买了最初的55英亩地之后，开始种树。故选A。
13. 句意：禁止偷猎是一项挑战。A.enjoyment享受，乐趣；B.answer回答；C.challenge挑战；D.reality现实。要提高人们禁止偷猎的意识，所以这是一种挑战。故选C。
14. 句意：有时我和偷猎者发生打斗。A.unite联合；B.communicate交流；C.work工作；D.fight打斗。根据下文中的I was even in great danger once可推知，有时Pamela会与偷猎者发生打斗。故选D。
15. 句意：然而，我希望我们现在所做的能对动物产生影响。A.However然而；B.Therefore所以；C.Besides此外；D.Moreover而且。根据空处前后的内容可知，此处表示转折。故选A。
25.【答案】【小题1】
wipe it out
【小题2】
related to
【小题3】
has a role
【小题4】
stressed out
【小题5】
are to blame
【小题6】
set out
【解析】1. 句意：我们乐观地认为，中国将遏制新冠肺炎的传播，并最终将其消灭。固定短语wipe out“消灭”符合语境，与动词contain并列在will之后，故填wipe it out。
2. 句意：鼓励这些公司参与建筑项目，包括与5G、Al和绿色能源相关的项目。分析句子可知已有动词are encouraged，故设空处应用非谓语动词。those和动词短语relate to属于动宾关系，应用动词的-ed形式，故填related to。
3. 句意：到目前为止，科学家还没有明确的证据证明这种药物在治疗肺癌方面有作用。固定短语have a role表示“起作用”，句子主语为the drug，故填has a role。
4. 句意：当我们感到疲倦或压力过大时 ，家总是我们休息的庇护所。固定短语stressed out表示“心力交瘁的”，符合语境，作are后的表语。故填stressed out。
5. 句意：不要总是把自己的失败归咎于别人。有时候怪你自己。固定短语be to blame表示“应受责备的”，主语为you，故填are to blame。
6. 句意：有了您收集的信息，您可以着手准备您的商业计划书。固定短语set out to do sth表示“开始着手做某事”，符合语境，情态动词can后跟动词原形。故填set out。
26.【答案】consumers
【解析】句意：随着移动支付变得流行，常见到消费者用智能手机为他们购买的东西付款。consumer为可数名词，且空前没有限定词，故用名词复数。故填consumers。
27.【答案】of
【解析】句意：尽管Peter意识到了风险，他最终还是决定开始做那项实验。be aware of意为“意识到”，是固定搭配。故填of。
28.【答案】anxious
【解析】句意：当面临危险和冲突的时候，人往往会血压升高，感到紧张和焦虑。feel在此处是系动词，再根据空前的nervous可知，空处应填形容词，表示“焦虑的”，故填anxious。
29.【答案】incredibly
【解析】句意：在澳大利亚有140多种蛇，它们中的很多都极其危险。空处作状语，修饰形容词dangerous，故用副词形式。故填incredibly。
30.【答案】endangered
【解析】句意：人们已经设立了保护区来保护野生动物，尤其是这些濒临灭绝的物种。空处作定语修饰species，应用形容词，故填endangered。
31.【答案】involved

【解析】句意：我们相信，完成这个如此重要的项目所需要投入的时间和辛劳是值得的。time and hard work与involve之间是逻辑上的动宾关系，故用动词的-ed形式。故填involved。
32.【答案】to restore
【解析】句意：经济危机之后，这个国家立刻采取措施恢复经济。take steps to do sth.意为“采取措施做某事”，是固定用法。故填to restore。
33.【答案】has decreased/decreases
【解析】句意：和去年相比，交通事故导致的死亡人数减少了30%。此处表示过去发生的事情对现在造成的影响，应用现在完成时；此处也可表示陈述客观情况，故也可用一般现在时。主语为The number of deaths，故谓语动词用单数形式。故填has decreased/decreases。
34.【答案】【小题1】
extinct
【小题2】
when
【小题3】
is claimed
【小题4】
the
【小题5】
has affected
【小题6】
to die
【小题7】
being destroyed
【小题8】
at
【小题9】
significantly
【小题10】
it
【解析】1. 空处作表语，表示“已灭绝的”，故用形容词形式。故填extinct。
2. 空处引导定语从句，指代先行词five times，且空处在从句中作时间状语，故用when。
3. 根据语境可知，此处陈述客观的情况，故用一般现在时；It作形式主语，真正的主语是后面的that从句，且It与claim之间是动宾关系，故用被动语态。故填is claimed。
4. 根据空后的sixth可知，此处应用定冠词the。故填the。
5. 根据语境可知，此处表示过去发生的动作对现在造成的影响，故用现在完成时。故填has affected。
6. cause sb./sth.to do sth.意为“造成某人/某物做某事”，是固定用法。故填to die。
7. 此处应用非谓语动词作定语，且根据语境可知，此处表示“正在被破坏”，故填being destroyed。
8. be at risk意为“处境危险，受到威胁”，是固定词组。故填at。
9. 空处作状语，修饰动词change，故用副词。故填significantly。
10. 根据句意可知，空处指代上文提到的the planet，且作宾语，故填it。
35.【答案】【小题1】
treatment
【小题2】
an
【小题3】
compared
【小题4】
are sent
【小题5】
where
【小题6】
on
【小题7】
being processed
【小题8】
immediately
【小题9】
to take
【小题10】
helpful
【解析】1. 此处表示“传统的垃圾处理”，应用名词作changing的宾语，故填treatment。
2. 本句为感叹句，measure表示“措施，方法”时为可数名词，且encouraging的发音以元音音素开头，故填an。
3. The new method和compare之间为逻辑上的动宾关系，故用动词的-ed形式。故填compared。
4. 根据上下文可知，此处应用一般现在时，且wastes和send之间是动宾关系，应用被动语态。故填are sent。
5. 空处引导非限制性定语从句，且在从句中作地点状语，故用关系副词where。故填where。
6. 此处表示“在处理垃圾方面的开支”，应用介词on。故填on。
7. 空处位于介词after之后，应用动词-ing形式作宾语，且Recyclable wastes和process之间为逻辑上的动宾关系，应用被动形式。故填being processed。
8. 此处修饰carried out，应用副词。故填immediately。
9. be supposed to do sth.表示“应该做某事”，为固定短语。故填to take。
10. 空处在主句中作表语，应用形容词。故填helpful。
36.【答案】urgent
【解析】句意：紧急情况要求我们立即作出决定。分析句子可知，设空处在名词situation前，应用形容词修饰。形容词urgent“紧急的”符合语境，故填urgent。
37.【答案】transportation
【解析】句意：据报道，在中国许多城市，共享自行车已经成为一种流行的交通工具。分析可知，设空处作介词of的宾语，应填名词。根据句意，名词transportation“交通工具”符合语境，故填transportation。
38.【答案】realistic
【解析】句意：目标必须现实 ，让学生能够接触到他们，并感受到成就感。分析句子可知，设空处作表语。形容词realistic“现实的，实际的”符合语境，故填realistic。
39.【答案】annoyed
【解析】句意：苏珊的声音仍然很平静，即使她很生气。分析句子可知，设空处在系动词getting之后作表语。形容词annoyed“生气的”符合语境，故填annoyed。
40.【答案】threat
【解析】句意：化学污染将对农业和食物链，进而对人类健康造成威胁。分析句子及空前的冠词a可知，空处应为可数名词单数形式；结合句意及汉语提示，可数名词threat“威胁”符合语境。故填threat。
41.【答案】recyclable; recycle
【解析】句意：我们应该把垃圾中的可回收材料分类，这样我们就可以回收利用，减少污染。分析句子可知，设空处分别填形容词和动词。形容词recyclable表示“可回收的”，动词recycle（回收）符合语境。故填recyclable; recycle。
42.【答案】suit varied tastes
【解析】对照中英文可知，设空处缺少“适合各种口味”之意。分析可知，that引导定语从句，从句动词需要和先行词foods保持主谓一致。动词suit“适合”；形容词varied“各种各样的”；tastes表示“口味”，故填suit varied tastes。
43.【答案】it is not unusual for teenagers
【解析】对照中英文可知，设空处缺少“对于青少年不足为奇”之意。分析可知，设空处可用固定句型“it is＋adj＋for sb”翻译，表示“对于某人来说是……的”。形容词unusual“不足为奇的”作表语，故填it is not unusual for teenagers。
44.【答案】who won the championship
【解析】对照中英文可知，设空处缺少“她获得了冠军”之意。分析可知，可用定语从句翻译。先行词为 Gu Ailing，指人，故用关系代词who引导从句。win the championship表示“赢得冠军”，时态为一般过去时，故填who won the championship。
45.【答案】do our part to
【解析】对照中英文可知，设空处缺少“尽我们的职责去做某事”之意。固定短语do one's part to do sth.“尽自己所能做某事”，根据前面的we可知，此处用形容词性物主代词our；情态动词can后跟动词原形，故填do our part to。
46.【答案】With the air pollution becoming; switch from traditional cars to
【解析】分析句子可知，第一空用介词with的复合结构翻译。the air pollution表示“空气污染”，变化“become”要改为动词的-ing形式becoming表示主动关系，作宾语补足语；第二空用固定短语switch from A to B，表示“从A转向B”，traditional cars表示“传统汽车”。故填With the air pollution becoming; switch from traditional cars to。
47.【答案】where your only opponent is yourself
【解析】对照中英文可知，设空处意思“在那儿你唯一的对手是你自己”之意。分析可知，设空处可用定语从句翻译。先行词是a long race，在定语从句中作抽象地点，故用关系副词where引导。your only opponent表示“你唯一的对手”，yourself表示“你自己”，故填where your only opponent is yourself。
48.【答案】【小题1】I m honored/It s my honor to stand here
【小题2】Today my topic is "Wildlife Protection"
【小题3】are dying out at an alarming rate
【小题4】due to illegal hunting
【小题5】habitat loss
【小题6】have set up wildlife reserves
【小题7】make people aware of
【小题8】everyone on Earth
【小题9】has the responsibility to protect wildlife
【小题10】Only when we learn to live in harmony with nature
【解析】1. 根据中文提示，固定句型I'm honored/It's my honor to stand here表示“我很荣幸站在这里”。故填I'm honored/It's my honor to stand here。
2. 根据中文提示，topic表示“题目/主题”，Wildlife Protection在题干中已给出提示。故填Today my topic is "Wildlife Protection"。
3. 根据中文提示，die out表示“灭绝”，at an alarming rate表示“以一种惊人的速度”，注意这里不是指物体运动的速度，因此不用speed。句子时态为现在进行时，主语为wildlife species，是复数形式，故填are dying out at an alarming rate。
4. 根据中文提示，due to表示“由于”，后面跟名词或名词短语。illegal hunting表示“非法捕猎”，故填due to illegal hunting。
5. 分析句子并根据中文提示，设空处应填名词。固定短语habitat loss表示“栖息地的丧失”，符合语境。故填habitat loss。
6. 根据中文提示，设空处时态为现在完成时。set up表示“建立”，wildlife reserves表示“野生动植物保护区”。故填have set up wildlife reserves。
7. 根据中文提示，固定短语make sb do sth表示“使某人做某事”。 aware of表示“意识到”，故填make people aware of。
8. 根据中文提示，everyone表示“每个人”，on Earth表示“在地球上”。故填everyone on Earth。
9. 分析句子并根据中文提示可知，设空处所在的句子为强调句，主语为everyone。固定短语have the responsibility to do sth表示“有责任做某事”，protect wildlife表示“保护野生动植物”。故填has the responsibility to protect wildlife。
10. 分析句子并根据中文提示可知，设空处可用倒装句翻译，其结构为“only＋状语＋谓语＋主语”。本句话可用when引导，learn to do sth表示“学习做某事”，live in harmony with nature表示“与自然和谐相处”。设空处谓语句首，首字母大写，故填Only when we learn to live in harmony with nature。
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