Unit 6 Earth first
课后培优——微积累战高考，训练提分点
增分添彩的高级副词(2)
1．politely 有礼貌地
2．sincerely 真诚地
3．skillfully 熟练地
4．tolerantly 宽容地
5．thoughtfully 考虑周到地；若有所思地
6．secretly 偷偷地
7．silently 默默地
8．confidently 自信地
9．patiently 耐心地
10．proudly 自豪地
11．enthusiastically 热心地；热情地
12．heartily 热情地；由衷地；发自内心
13．sympathetically 同情地
14．admiringly 赞美地；钦佩地
15．tightly 紧紧地
16．cautiously 小心谨慎地
17．curiously 好奇地
18．seriously 严肃地；认真地
19．painfully (身体)痛苦地
20．sorrowfully 非常伤心地；痛苦地；(心理)悲痛地
一、佳句观摩
1．“Your home is beautiful，” I said politely.
我客气地说：“你的家真漂亮。”
2．She had listened tolerantly to his jumbled account.
她一直包容地听着他语无伦次的描述。
3．Milson regarded her thoughtfully.Perhaps she was right.
米尔森若有所思地注视着她。或许她是对的。
4．She worked enthusiastically to interest the young in musiC．
为了激发年轻人对音乐的兴趣，她一直热情地工作着。
5．She climbed the staircase cautiously, holding fast to the rail.
她紧紧地抓着栏杆，小心翼翼地爬楼梯。
6．The postmaster shook his head sorrowfully.
邮差难过地摇了摇头。
二、佳句仿写
1．I_sincerely_believe that this is the right decision.
我由衷地认为这个决定是正确的。
2．Phil walked_forward_confidently but something held Ben back.
菲尔信心十足地走向前去， 本却踌躇不定。
3．She patiently_wiped_the_dirty_marks off the wall.
她耐心地擦去墙上的污渍。
4．The doctor watched_the_patient_sympathetically．
医生同情地注视着病人。
5．Liz picked up the blue envelope and turned_it_over_curiously．
莉兹拿起蓝色信封，好奇地翻过来看。
Ⅰ.阅读理解
A
语篇类型 说明文
主题语境 人与自然——环境保护——亚马孙雨林大火
(2021·重庆市高三调研抽测)The proliferation(激增) of fires in the Amazon rainforest drew international attention in August 2019，especially when French President Emmanuel Macron called for urgent action.Since then，the eyes of the world have shifted elsewhere as House Democrats launched an impeachment (弹劾) inquiry against President Donald Trump.
Meanwhile，the Amazon continued to burn.The number of fires decreased by 35% in September 2019，but experts say this is merely a slowdown in a crisis with global repercussions(反响).There were still 19，925 fire outbreaks in September 2019 on the Brazilian part of the rainforest，which accounts for nearly 65% of the Amazon basin.Moreover，through the first nine months of 2019，the number of fires soared by 41% compared to the same period in 2018，Brazil's National Institute for Space Research(INPE)reporteD．
Higher rainfall totals than usual since the beginning of September 2019 and measures taken under mounting pressure by Brazilian President Jair Bolsonaro—who deployed the military to the Amazon and imposed a two month ban on clearing land through fires—contributed to the burning decline.
“The factors that led to such widespread fires in the first place—decreased enforcement of forest law，illegal deforestation for agriculture and invasion of native territories—remain in place，”said Nigel Sizer，Chief Program Officer for the advocacy organization Rainforest Alliance.“ It is good news that there are fewer fires in the Amazon right now，but this is a short term pause from the larger problem.”
That problem centers on deforestation through systematically chopping down trees，which are either logged or burned，mostly to convert the land for raising cattle and growing crops.The practice has expanded from a small scale to an industrial production，leading to about 20% of the Brazilian Amazon having been cleared since 1970.
1．Who raised international attention to the proliferation of fires in the Amazon rainforest
A．Emmanuel Macron. B．Donald Trump.
C．Nigel Sizer. D．Jair Bolsonaro.
2．What's the second paragraph mainly about
A．There are more fires in Amazon now than ever before.
B．There were more fires in Amazon in August 2019 than in September 2019.
C．The proliferation of fires covers most of the wide area in Amazon.
D．The fires in the Amazon rainforest is still burning with international attention.
3．What's the main cause of the widespread fires in the Amazon rainforest
A．Decreased enforcement of forest law.
B．Invasion of native territories.
C．Serious deforestation for agriculture.
D．The short term pause of the proliferation of fires.
4．From which is the text probably taken
A．A biology textbook. B．A gardening magazine.
C．A newspaper. D．A travel brochure.
B
语篇类型 记叙文
主题语境 人与自我——个人经历——有关自然科学学习的新认识
(2021·郑州市高中质量预测)If there was a subject at school that made me anxious，it was science.Maybe that's because in my tenth grade，I couldn't understand my physics teacher's instructions，causing me to accidentally set fire to the classroom.So，when my husband and I decided to homeschool our daughters，we made a deal：he would teach science，while I would handle everything else.But that's not how things have been going these past few weeks，since my husband has been too busy to teach the girls.
Recently，while out on my morning hike before starting lessons，I noticed that the sky was a beautiful blue，and the air was filled with the sweet smell of flowers.That's why I decided that the day's lessons would be taught outside，although I remembered that my daughters hadn't had any science classes from my husband for a while.
I returned to the house to get the girls ready.We headed up into the forest，settling ourselves by a pond that rarely has any visitors.My daughter Saoirse started to pick up pondweed and catch frogs，while my other daughter Ula looked at me，waiting to be instructeD．I handed her a drawing board and colored pencils.“We wait，”I told her，“and see if something comes along.In the meantime，just draw what's around you.”
We worked for more than an hour，hardly speaking.A bird flew across the water，and then settled in front of a fallen tree.I quickly told Ula，worrying that she'd not seen the creature.But she had，and she started drawing it.An hour later，she finished her picture and I stared down at it.She drew the bird on her paper with amazing accuracy.But there was one other interesting fact about this drawing：she also drew me，sitting beside her.
I realized，as I stared at this child's drawing of us watching a bird，how I'd lived for 40 years，received 10 years of higher education，and never understood the foundation of science before this moment.The foundation of science is a sense of wonder; it isn't about accurately reciting words from a textbook.It is first and foremost about stepping outside our busy lives and being amazed at the world around us.
5．How did the author feel about science when in school
A．She was nervous about it.
B．She was fond of it.
C．She was confused about it.
D．She was eager for it.
6．The underlined word “it” in Paragraph 4 refers to“________”．
A．the fallen tree B．the forest
C．the bird D．the picture
7．Which of the following best describes Ula
A．She's very outgoing.
B．She's good at observing.
C．She's very hard working.
D．She shares interests with her sister.
8．What is the foundation of science in the author's opinion
A．Attention to accuracy.
B．Curiosity about the outside worlD．
C．Determination to find out the truth.
D．The ability to understand teachers' instructions.
Ⅱ.七选五
语篇类型 说明文
主题语境 人与社会——公共演讲——公共演讲的类型及注意事项
(2021·福州市高三适应性练习)
Public Speaking
Public speaking can be defined as the act of making a speech in front of a group of listeners.
The types of public speaking are deliberately structured with three general purposes：to inform，to persuade and to entertain the audience.An informative speech has a purpose to inform，or give knowledge to its audience.1.________ For persuasive speech，the speaker would try to change the mindset，perception，or behavior of the audience for their own gooD．Thus，the speaker needs to look for common ground with the audience and try to relate to what they might agree on.The last type is a ceremonial speech.It tends to be less formal and more personal than the other types of speeches.No matter how well you know the person you are giving speech to，try not to say bad things about them，even if it is meant to be a joke.
2．________ Sparing some time to practice will help build confidence and help determine how long the presentation will last.Aside from it，knowing who the audience will be is quite necessary.Try to get as much information as possible regarding this particular area related to the audience.Knowing the “battlefield” in advance will give the speakers a huge advantage.
Language is the main aspect a speaker needs to pay attention to while giving a speech.3.________ A speaker needs to choose their words carefully and make it clear to the audience what they mean.Often，when given a speech，the audience look to the speaker to give them something new and useful.4.________ Language and delivery (演讲方式) alone will not be sufficient if the speaker does not have the body language.The movement and gesture of a speaker also affect the audience.While closing the speech or presentation，speakers can restate their main points，just to remind the audience of the important things that have been saiD．5.________
A．It needs to be used clearly.
B．These speeches mark special occasions.
C．The important thing to watch about is not to put in too much information.
D．The key of perfecting anything is through practice，including public speaking.
E．They can also end it with a special message and encourage the audience to ask questions.
F．Knowing how public speaking is done is a key part in understanding the importance of it.
G．Thus，the speaker needs to know how to deliver their speech to fulfill the audience's expectation.
Ⅲ.语法填空
语篇类型 说明文
主题语境 人与自然——人与动物——杀戮动物等于扼杀人类的未来
(2021·武汉市高中质量检测)Today，many people are worried about endangered species.But isn't it just normal for some animals to die out
The situation today is different from 1.________of the past.In the past，animals died out over a long period of time. When animals died out in the past，it was usually because of the weather or other 2.________(nature) causes.
What is happening today is 3.________(total) different.We are killing millions of species in a short time. The result is that we are killing our future，because so many species 4.________(kill) in such a short time that even 5.________ fittest can't survive. In fact，there won't be enough species to choose from.Without enough animals and plants，evolution cannot function and nature will get 6.________ (bad) instead of getting better.
Many of the species 7.________ (disappear) on earth are unknown and few people even know that they are dying out.These animals and plants started to live on earth long 8.________us and we have no right to kill them. We may also need these species in the future. We must try to keep the endangered species alive. If we allow these species 9.________ (die) out，we are in fact becoming endangered 10.________ (our).
PAGE
8Unit 6 Earth first
课后培优——微积累战高考，训练提分点
增分添彩的高级副词(2)
1．politely 有礼貌地
2．sincerely 真诚地
3．skillfully 熟练地
4．tolerantly 宽容地
5．thoughtfully 考虑周到地；若有所思地
6．secretly 偷偷地
7．silently 默默地
8．confidently 自信地
9．patiently 耐心地
10．proudly 自豪地
11．enthusiastically 热心地；热情地
12．heartily 热情地；由衷地；发自内心
13．sympathetically 同情地
14．admiringly 赞美地；钦佩地
15．tightly 紧紧地
16．cautiously 小心谨慎地
17．curiously 好奇地
18．seriously 严肃地；认真地
19．painfully (身体)痛苦地
20．sorrowfully 非常伤心地；痛苦地；(心理)悲痛地
一、佳句观摩
1．“Your home is beautiful，” I said politely.
我客气地说：“你的家真漂亮。”
2．She had listened tolerantly to his jumbled account.
她一直包容地听着他语无伦次的描述。
3．Milson regarded her thoughtfully.Perhaps she was right.
米尔森若有所思地注视着她。或许她是对的。
4．She worked enthusiastically to interest the young in musiC．
为了激发年轻人对音乐的兴趣，她一直热情地工作着。
5．She climbed the staircase cautiously, holding fast to the rail.
她紧紧地抓着栏杆，小心翼翼地爬楼梯。
6．The postmaster shook his head sorrowfully.
邮差难过地摇了摇头。
二、佳句仿写
1．I_sincerely_believe that this is the right decision.
我由衷地认为这个决定是正确的。
2．Phil walked_forward_confidently but something held Ben back.
菲尔信心十足地走向前去， 本却踌躇不定。
3．She patiently_wiped_the_dirty_marks off the wall.
她耐心地擦去墙上的污渍。
4．The doctor watched_the_patient_sympathetically．
医生同情地注视着病人。
5．Liz picked up the blue envelope and turned_it_over_curiously．
莉兹拿起蓝色信封，好奇地翻过来看。
Ⅰ.阅读理解
A
语篇类型 说明文
主题语境 人与自然——环境保护——亚马孙雨林大火
(2021·重庆市高三调研抽测)The proliferation(激增) of fires in the Amazon rainforest drew international attention in August 2019，especially when French President Emmanuel Macron called for urgent action.Since then，the eyes of the world have shifted elsewhere as House Democrats launched an impeachment (弹劾) inquiry against President Donald Trump.
Meanwhile，the Amazon continued to burn.The number of fires decreased by 35% in September 2019，but experts say this is merely a slowdown in a crisis with global repercussions(反响).There were still 19，925 fire outbreaks in September 2019 on the Brazilian part of the rainforest，which accounts for nearly 65% of the Amazon basin.Moreover，through the first nine months of 2019，the number of fires soared by 41% compared to the same period in 2018，Brazil's National Institute for Space Research(INPE)reporteD．
Higher rainfall totals than usual since the beginning of September 2019 and measures taken under mounting pressure by Brazilian President Jair Bolsonaro—who deployed the military to the Amazon and imposed a two month ban on clearing land through fires—contributed to the burning decline.
“The factors that led to such widespread fires in the first place—decreased enforcement of forest law，illegal deforestation for agriculture and invasion of native territories—remain in place，”said Nigel Sizer，Chief Program Officer for the advocacy organization Rainforest Alliance.“ It is good news that there are fewer fires in the Amazon right now，but this is a short term pause from the larger problem.”
That problem centers on deforestation through systematically chopping down trees，which are either logged or burned，mostly to convert the land for raising cattle and growing crops.The practice has expanded from a small scale to an industrial production，leading to about 20% of the Brazilian Amazon having been cleared since 1970.
文章大意：这是一篇说明文。当法国总统马克龙呼吁采取紧急行动时，2019年8月份亚马孙雨林火灾的激增引发了国际的关注；9月份，火灾数量虽有所减少，但是亚马孙雨林大火仍在燃烧，巴西总统博索纳罗下令出动军队前往亚马孙雨林开展灭火工作；对森林法的执行降低、为了进行农业活动而非法毁林和对本土的入侵仍然是导致大火的因素，但造成大火的主要原因是滥伐森林。
1．Who raised international attention to the proliferation of fires in the Amazon rainforest
A．Emmanuel Macron. B．Donald Trump.
C．Nigel Sizer. D．Jair Bolsonaro.
解析：A 考查细节理解。根据第一段第一句可知，亚马孙雨林大火的激增引起了国际关注，特别是当法国总统马克龙呼吁采取紧急行动时，即马克龙把国际的注意力引向了大火，故选A项。
2．What's the second paragraph mainly about
A．There are more fires in Amazon now than ever before.
B．There were more fires in Amazon in August 2019 than in September 2019.
C．The proliferation of fires covers most of the wide area in Amazon.
D．The fires in the Amazon rainforest is still burning with international attention.
解析：D 考查段落大意。根据第二段的内容可知，2019年9月亚马孙雨林的火灾数量下降了35%，但专家称这仅仅是在全球的间接影响下处于危机之中的一种减缓而已，亚马孙雨林仍在燃烧，故选D项。
3．What's the main cause of the widespread fires in the Amazon rainforest
A．Decreased enforcement of forest law.
B．Invasion of native territories.
C．Serious deforestation for agriculture.
D．The short term pause of the proliferation of fires.
解析：C 考查细节理解。根据第四段首句可知，对森林法执行的降低、为了进行农业活动而非法毁林以及对本土的入侵等导致了森林火灾；又结合第五段首句可知，该问题以系统地砍伐树木而造成的滥伐森林为中心，故C项正确。
4．From which is the text probably taken
A．A biology textbook. B．A gardening magazine.
C．A newspaper. D．A travel brochure.
解析：C 考查文章出处。根据第一段和第三段的内容可知，法国总统马克龙呼吁采取紧急行动，美国总统特朗普遭弹劾，巴西总统博索纳罗部署军队，又根据文中列举的数据可推知，本文可能摘自报纸。故C项正确。
B
语篇类型 记叙文
主题语境 人与自我——个人经历——有关自然科学学习的新认识
(2021·郑州市高中质量预测)If there was a subject at school that made me anxious，it was science.Maybe that's because in my tenth grade，I couldn't understand my physics teacher's instructions，causing me to accidentally set fire to the classroom.So，when my husband and I decided to homeschool our daughters，we made a deal：he would teach science，while I would handle everything else.But that's not how things have been going these past few weeks，since my husband has been too busy to teach the girls.
Recently，while out on my morning hike before starting lessons，I noticed that the sky was a beautiful blue，and the air was filled with the sweet smell of flowers.That's why I decided that the day's lessons would be taught outside，although I remembered that my daughters hadn't had any science classes from my husband for a while.
I returned to the house to get the girls ready.We headed up into the forest，settling ourselves by a pond that rarely has any visitors.My daughter Saoirse started to pick up pondweed and catch frogs，while my other daughter Ula looked at me，waiting to be instructeD．I handed her a drawing board and colored pencils.“We wait，”I told her，“and see if something comes along.In the meantime，just draw what's around you.”
We worked for more than an hour，hardly speaking.A bird flew across the water，and then settled in front of a fallen tree.I quickly told Ula，worrying that she'd not seen the creature.But she had，and she started drawing it.An hour later，she finished her picture and I stared down at it.She drew the bird on her paper with amazing accuracy.But there was one other interesting fact about this drawing：she also drew me，sitting beside her.
I realized，as I stared at this child's drawing of us watching a bird，how I'd lived for 40 years，received 10 years of higher education，and never understood the foundation of science before this moment.The foundation of science is a sense of wonder; it isn't about accurately reciting words from a textbook.It is first and foremost about stepping outside our busy lives and being amazed at the world around us.
文章大意：上学的时候，作者总是对自然科学感到担心，然而成年后和女儿们一起到户外学习的经历使作者认识到：学习自然科学的基础是对外界的好奇心。
5．How did the author feel about science when in school
A．She was nervous about it.
B．She was fond of it.
C．She was confused about it.
D．She was eager for it.
解析：A 考查细节理解。根据第一段，尤其是第一句“If there was a subject at school that made me anxious，it was science.”可知，作者在上学时对学习自然科学感到焦虑。
6．The underlined word “it” in Paragraph 4 refers to“________”．
A．the fallen tree B．the forest
C．the bird D．the picture
解析：C 考查代词指代。根据第四段第二、三句“A bird flew across the water...worrying that she'd not seen the creature.”可知，一只鸟飞过水面，然后停留在一棵倒下的树前，作者赶紧告诉Ula，担心她没有看到那只鸟，并结合画线词所在句中的“But she had”可知，她看到了那只鸟并开始画它，故代词it指代那只鸟。
7．Which of the following best describes Ula
A．She's very outgoing.
B．She's good at observing.
C．She's very hard working.
D．She shares interests with her sister.
解析：B 考查推理判断。根据第四段中的“She drew the bird on her paper with amazing accuracy.But there was one other interesting fact about this drawing：she also drew me, sitting beside her.”可知，Ula以惊人的准确性在纸上画了那只鸟，而且还画了坐在她旁边的作者，由此可推知，Ula擅长观察。
8．What is the foundation of science in the author's opinion
A．Attention to accuracy.
B．Curiosity about the outside worlD．
C．Determination to find out the truth.
D．The ability to understand teachers' instructions.
解析：B 考查观点态度。根据第五段的内容，尤其是第二句中的“The foundation of science is a sense of wonder”以及尾句中的“being amazed at the world around us”可知，作者认为学习自然科学的基础是对外界的好奇心。
Ⅱ.七选五
语篇类型 说明文
主题语境 人与社会——公共演讲——公共演讲的类型及注意事项
(2021·福州市高三适应性练习)
Public Speaking
Public speaking can be defined as the act of making a speech in front of a group of listeners.
The types of public speaking are deliberately structured with three general purposes：to inform，to persuade and to entertain the audience.An informative speech has a purpose to inform，or give knowledge to its audience.1.________ For persuasive speech，the speaker would try to change the mindset，perception，or behavior of the audience for their own gooD．Thus，the speaker needs to look for common ground with the audience and try to relate to what they might agree on.The last type is a ceremonial speech.It tends to be less formal and more personal than the other types of speeches.No matter how well you know the person you are giving speech to，try not to say bad things about them，even if it is meant to be a joke.
2．________ Sparing some time to practice will help build confidence and help determine how long the presentation will last.Aside from it，knowing who the audience will be is quite necessary.Try to get as much information as possible regarding this particular area related to the audience.Knowing the “battlefield” in advance will give the speakers a huge advantage.
Language is the main aspect a speaker needs to pay attention to while giving a speech.3.________ A speaker needs to choose their words carefully and make it clear to the audience what they mean.Often，when given a speech，the audience look to the speaker to give them something new and useful.4.________ Language and delivery (演讲方式) alone will not be sufficient if the speaker does not have the body language.The movement and gesture of a speaker also affect the audience.While closing the speech or presentation，speakers can restate their main points，just to remind the audience of the important things that have been saiD．5.________
A．It needs to be used clearly.
B．These speeches mark special occasions.
C．The important thing to watch about is not to put in too much information.
D．The key of perfecting anything is through practice，including public speaking.
E．They can also end it with a special message and encourage the audience to ask questions.
F．Knowing how public speaking is done is a key part in understanding the importance of it.
G．Thus，the speaker needs to know how to deliver their speech to fulfill the audience's expectation.
文章大意：本文介绍了公共演讲的几个类型以及做好演讲所需注意的事项。
1．解析：C 从结构上看，第二段首先介绍了公共演讲的三种目的；接下来对这三种目的分别介绍了其对应的演讲类型以及注意事项，空处位于介绍informative speech这种类型之后，应是说明它的注意事项，故C项表述不要输入太多的信息符合语境。其中information是关键提示词。
2．解析：D 本空是段首句。本段讲述了公共演讲的两个注意事项。下文“Aside from it...is quite necessary.”讲的是第二个注意事项：要提前了解观众是谁。接着进一步阐述了注意事项。空后讲的是多加练习对于演讲者的好处，由此可推知，空处应是第一个注意事项，并且与空后一句中的“practice”相呼应，故选D。
3．解析：A 本空是段中句。空前一句是说语言是演讲中需注意的主要方面。空处应是对其进行进一步的说明，关键词是Language，A项中的It可推知指的就是Language，且根据空后的“make it clear to the audience”可知，A项“它(语言)需要使用得很清楚”符合语境。
4．解析：G 本空是段中句。空前讲的是观众期待演讲者能给他们新的有用的东西，故G项“因此，演讲者需要了解如何发表他们的演讲来满足观众的期待”与空前一句构成逻辑上的因果关系，所以答案是G。
5．解析：E 本空是段尾句。空前讲的是演讲者可以重申要点，提醒观众所讲的重要事情来结束演讲，空处应是叙述另一种结束方式，故E项符合语境。
Ⅲ.语法填空
语篇类型 说明文
主题语境 人与自然——人与动物——杀戮动物等于扼杀人类的未来
(2021·武汉市高中质量检测)Today，many people are worried about endangered species.But isn't it just normal for some animals to die out
The situation today is different from 1.________of the past.In the past，animals died out over a long period of time. When animals died out in the past，it was usually because of the weather or other 2.________(nature) causes.
What is happening today is 3.________(total) different.We are killing millions of species in a short time. The result is that we are killing our future，because so many species 4.________(kill) in such a short time that even 5.________ fittest can't survive. In fact，there won't be enough species to choose from.Without enough animals and plants，evolution cannot function and nature will get 6.________ (bad) instead of getting better.
Many of the species 7.________ (disappear) on earth are unknown and few people even know that they are dying out.These animals and plants started to live on earth long 8.________us and we have no right to kill them. We may also need these species in the future. We must try to keep the endangered species alive. If we allow these species 9.________ (die) out，we are in fact becoming endangered 10.________ (our).
文章大意：如今，很多物种在很短的时间内就被杀害，这与过去的情形完全不同。很多物种对自然和人类都至关重要，我们不能任由它们灭绝。
1．解析：that 考查代词。分析该句结构可知，空处作介词from的宾语，该句表示“如今的情形和过去的不同”，空处指代该句中的“The situation”，故用that。
2．解析：natural 考查形容词。形容词修饰名词，空处修饰名词“causes”，故用所给词的形容词形式。该句意为：在过去，动物灭绝通常是因为天气或其他自然原因。
3．解析：totally 考查副词。副词修饰形容词，空处修饰形容词“different”，故用所给词的副词形式。
4．解析：are (being) killed 考查动词的时态、语态和主谓一致。该从句的主语是“so many species”，谓语动词应用复数形式，和动词kill是被动关系，应用被动语态，又结合语境可知，此处叙述的为客观存在的情况或此刻正在进行的动作，表示“如此多的物种(正在)被杀死”，故用一般现在时的被动语态或现在进行时的被动语态，故填are(being) killed。
5．解析：the 考查冠词。形容词的最高级形式前面用定冠词the。根据空后的形容词的最高级形式“fittest”可知，该处应用定冠词the。该句意为：结果是我们正在扼杀我们的未来，因为如此多的物种在如此短的时间内(正在)被杀死，即使是最健康的物种也无法生存。
6．解析：worse 考查形容词的比较级。根据该句中的比较级形式“better”并结合语境可知，此处表示没有足够的动物和植物，进化就无法进行，大自然会变得更糟而不是更好。故填worse，表示“更糟”。
7．解析：disappearing 考查现在分词。分析该句结构可知，此处为分词短语作定语，修饰前面的名词species，又该名词和动词disappear之间为逻辑上的主谓关系，故用所给词的现在分词形式。
8．解析：before 考查介词。根据该句中的“we have no right to kill them”和语境可知，这些动植物要比人类早很久就开始在地球上生活。故填before“在……以前”。
9．解析：to die 考查动词不定式。allow sB．/sth.to do sth.为固定用法，表示“允许某人/某物做某事”。
10．解析：ourselves 考查反身代词。根据该句主语we并结合语境可知，此处表示如果我们任由这些物种灭绝，我们自己实际上也正濒临灭绝。故用反身代词ourselves.
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