译林版（2024）八年级下册 Unit 8 A green world 单元测试卷（含答案）
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| 名称 | 译林版（2024）八年级下册 Unit 8 A green world 单元测试卷（含答案） |  | |
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译林版（2024）八年级下册Unit 8 A green world单元测试卷
一、单项选择（每小题1分，共10分）
1. —______ do you think we can do to protect the environment
—We can plant more trees.
A. What B. How C. Where D. When
2. It's our duty ______ the environment.
A. protect B. protecting C. to protect D. protected
3. We should use ______ plastic bags to help protect the environment.
A. fewer B. more C. less D. little
4. The government is trying to ______ ways to solve the environmental problems.
A. look for B. find C. find out D. look up
5. —______ is the most serious environmental problem in your opinion
—Pollution, I think.
A. How B. What C. When D. Where
6. We can't see the stars in the sky clearly because of ______ pollution.
A. air B. water C. noise D. light
7. ______ of the students in our class ______ interested in planting trees.
A. Three - fifth; is B. Three - fifths; is
C. Three - fifth; are D. Three - fifths; are
8. It's important for us to save energy. We should ______ the lights when we leave the room.
A. turn on B. turn off C. turn up D. turn down
9. The old man lives ______ in the village, but he doesn't feel ______.
A. alone; alone B. lonely; lonely C. alone; lonely D. lonely; alone
10. —What can we do to make our city more beautiful
—______
A. It's very beautiful. B. We should plant more trees.
C. I like our city. D. I'm proud of our city.
二、阅读理解（每小题2分，共30分）
A
The Earth is our home. We must take care of it. Life today is easier than it was hundreds of years ago, but it has brought some new problems. One of the biggest problems is pollution. We can see it, smell it, drink it and even hear it.
Man has polluted the Earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But now man is slowly polluting the whole world.
Air pollution is still the most serious. It's bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO is now the most dangerous kind of air pollution. It is caused by heavy traffic. We can do something to help fight it. For example, we can go to school by bike or on foot. If there are fewer people driving, there will be less pollution.
The Earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in population at the same time.
1. What was the life like hundreds of years ago
A. It was easier than it is today.
B. It was the same as it is today.
C. It was harder than it is today.
D. It was more interesting than it is today.
2. What is one of the biggest problems today
A. Air pollution. B. Water pollution. C. Noise pollution. D. Pollution.
3. Why was the pollution problem not so serious many years ago
A. Because there were not so many people.
B. Because the people didn't know about pollution.
C. Because the land was used up.
D. Because the river was dirty.
4. What kind of pollution is the most serious
A. Noise pollution. B. Air pollution. C. Water pollution. D. Soil pollution.
5. What can we do to help fight pollution
A. We can burn coal in houses.
B. We can go to school by car.
C. We can go to school by bike or on foot.
D. We can put dirty smoke into the air.
B
Recycling is one of the best ways to protect the environment. It means using things again instead of throwing them away. There are many things that can be recycled, such as paper, plastic, glass and metal.
Recycling paper can save trees. Trees are used to make paper. If we recycle paper, we can use fewer trees. This helps to protect forests. Recycling plastic can reduce the amount of plastic waste in landfills and the ocean. Plastic takes a very long time to break down, so recycling it is very important. Recycling glass and metal can also save energy. Making new glass and metal from recycled materials uses less energy than making them from raw materials.
In many countries, there are special recycling programs. People separate their waste into different bins for paper, plastic, glass and metal. Then the recycling companies collect the waste and take it to factories. At the factories, the waste is processed and turned into new products.
Recycling is not only good for the environment but also good for the economy. It creates jobs in the recycling and manufacturing industries. So, we should all do our part to recycle and make the world a greener place.
6. What does recycling mean
A. Using things again. B. Throwing things away.
C. Making new things. D. Buying new things.
7. What can recycling paper help to protect
A. Plastic. B. Glass. C. Forests. D. Metal.
8. Why is recycling plastic important
A. Because plastic is easy to break down.
B. Because plastic is expensive.
C. Because plastic takes a long time to break down.
D. Because plastic is useful.
9. What do people do in recycling programs
A. They throw all the waste into one bin.
B. They separate waste into different bins.
C. They collect the waste and take it to factories.
D. They make new products from the waste.
10. What is the advantage of recycling besides protecting the environment
A. It makes people rich. B. It creates jobs.
C. It saves water. D. It saves time.
C
A green lifestyle is becoming more and more popular. People are realizing that protecting the environment is not only important but also necessary. There are many ways to live a green life.
One of the ways is to save energy. We can turn off lights, TVs and other electrical appliances when we are not using them. We can also use energy - saving light bulbs. These bulbs use less electricity and last longer. Another way is to reduce waste. We can use reusable bags instead of plastic bags when we go shopping. We can also avoid using disposable (一次性的) products like disposable chopsticks and plastic cups.
Recycling is also an important part of a green lifestyle. We can recycle paper, plastic, glass and metal. By recycling, we can save resources and reduce pollution.
Using public transportation, riding a bike or walking is a great way to live a green life. It can reduce air pollution and save energy. If we live near our workplace or school, we can walk or ride a bike. If we need to travel a longer distance, we can take a bus or subway.
In addition, planting trees is a good way to make our planet greener. Trees can absorb carbon dioxide and release oxygen. They can also help to reduce noise pollution.
11. What is becoming more and more popular
A. A busy lifestyle. B. A green lifestyle. C. A lazy lifestyle. D. A rich lifestyle.
12. How can we save energy according to the passage
A. By using disposable products. B. By using plastic bags.
C. By turning off electrical appliances when not in use. D. By using more electricity.
13. What can we use instead of plastic bags
A. Disposable bags. B. Reusable bags. C. Paper bags. D. Plastic cups.
14. What is an important part of a green lifestyle
A. Throwing things away. B. Using disposable products.
C. Recycling. D. Using more energy.
15. What can trees do
A. They can absorb oxygen. B. They can release carbon dioxide.
C. They can help to reduce noise pollution. D. They can make our planet dirtier.
三、选句填空（每小题2分，共10分）
根据短文内容，从方框中选择合适的句子填入空白处。
The importance of protecting the environment cannot be overstated. 1. ______ We should take action to make our planet a better place. One of the first steps is to reduce waste. We can start by using reusable items instead of disposable ones. 2. ______ Another important aspect is to recycle. Recycling helps to save resources and reduce pollution. 3. ______ We should also plant more trees. Trees are not only beautiful but also play a crucial role in our ecosystem. 4. ______ Finally, we need to raise awareness about environmental protection. 5. ______ Only when everyone realizes the importance of protecting the environment can we make a real difference.
A. They can absorb harmful gases and release oxygen.
B. We should encourage people around us to take part in environmental protection activities.
C. It is our responsibility to ensure a sustainable future for generations to come.
D. For example, we can use reusable shopping bags instead of plastic bags.
E. We can separate waste into different categories and recycle them properly.
四、根据汉语提示写单词（每小题1分，共5分）
1. We should protect the ______ (环境) for our future.
2. The government is taking action to reduce air ______ (污染).
3. We can save ______ (能源) by turning off lights when we leave a room.
4. It's important to ______ (回收利用) waste paper to save trees.
5. We should use ______ (更少的) water to save the Earth.
五、根据汉语完成句子（每小题1.5分，共7.5分）
1. 我们应该采取行动来保护野生动物。
We should ______ ______ to protect wild animals.
2. 越来越多的人意识到环保的重要性。
______ ______ people are realizing the importance of environmental protection.
3. 我们可以通过种树使我们的城市更绿。
We can make our city greener ______ ______ trees.
4. 节约用水对我们来说很重要。
It's very important ______ us ______ save water.
5. 我们应该尽可能少用塑料袋。
We should use ______ ______ plastic bags as possible.
六、短文填空（每空1分，共20分）
（一）根据首字母提示补全短文
The Earth is in great danger. There are many environmental problems. One of the biggest problems is air pollution. Factories and cars produce a lot of dirty smoke. This makes the air d 1_____. It's bad for our health. Another problem is water pollution. People throw a lot of rubbish into rivers and lakes. The water in many rivers is too dirty to drink. We should take action to protect the Earth. We can plant more trees. Trees can make the air f 2_____. We should also recycle. We can recycle paper, plastic and glass. This can s 3_____ resources. We should use less water. Don't leave the tap r 4_____ when we brush our teeth. If we all do something to protect the Earth, our planet will be a b 5 _____place.
（二）用括号内单词的正确形式填空
1. We should ______ (reduce) waste to protect the environment.
2. It's necessary for us ______ (plant) more trees.
3. There ______ (be) a lot of pollution in the city.
4. We can make our school greener by ______ (recycle) waste.
5. The government is trying ______ (find) ways to solve the environmental problems.
七、书面表达（10分）
假设你是李华，学校将举办“绿色生活，从我做起”的活动，请你写一篇英语短文，介绍一些绿色生活的方式。内容包括：
1. 绿色生活的重要性；
2. 具体的绿色生活方式（如节约能源、减少浪费、回收利用等）；
3. 呼吁大家一起行动。（词数80左右）
答案
一、单项选择
1. A。根据回答“We can plant more trees.”可知，此处询问的是可以做什么来保护环境，用What。
2. C。It's one's duty to do sth. 表示“做某事是某人的责任”，it是形式主语，真正的主语是后面的动词不定式，所以选C。
3. A。plastic bags是可数名词复数，且根据保护环境的语境，应该是用更少的塑料袋，fewer修饰可数名词复数，less修饰不可数名词，所以选A。
4. B。look for强调寻找的动作；find强调找到的结果；find out侧重于经过一番努力查明、弄清楚；look up查阅（资料等）。此处表示政府努力找到解决环境问题的方法，强调结果，用find，选B。
5. B。根据回答“Pollution, I think.”可知，询问的是在对方看来最严重的环境问题是什么，用What。
6. A。看不到星星是因为空气污染，空气污染物会遮挡视线，所以选A。
7. D。分数表达法是分子用基数词，分母用序数词，当分子大于1时，分母用复数形式，所以五分之三表达为Three - fifths；“分数 + of + 名词复数”作主语时，谓语动词用复数形式，所以选D。
8. B。turn on打开；turn off关闭；turn up调高（音量等）；turn down调低（音量等）。离开房间时应该关闭灯，选B。
9. C。alone作副词时表示“独自”，强调客观上独自一人；lonely作形容词，意为“孤独的”，强调主观上的感受。第一空修饰动词lives用副词alone，第二空feel是系动词，后接形容词lonely，选C。
10. B。A选项“它非常漂亮”；C选项“我喜欢我们的城市”；D选项“我为我们的城市感到骄傲”；B选项“我们应该种更多的树”，符合对“如何让城市更美丽”的回答，选B。
二、阅读理解
1. C。根据“Life today is easier than it was hundreds of years ago”可知，几百年前的生活比现在更艰难，选C。
2. D。根据“One of the biggest problems is pollution.”可知，如今最大的问题之一是污染，选D。
3. A。从“Many years ago, the problem was not so serious because there were not so many people.”可知，很多年前污染问题不严重是因为人没那么多，选A。
4. B。根据“Air pollution is still the most serious.”可知，空气污染是最严重的，选B。
5. C。根据“For example, we can go to school by bike or on foot. If there are fewer people driving, there will be less pollution.”可知，我们可以通过骑车或步行上学来帮助对抗污染，选C。
6. A。根据“It means using things again instead of throwing them away.”可知，回收意味着再次使用物品，选A。
7. C。从“Recycling paper can save trees. This helps to protect forests.”可知，回收纸张有助于保护森林，选C。
8. C。根据“Plastic takes a very long time to break down, so recycling it is very important.”可知，回收塑料重要是因为塑料分解需要很长时间，选C。
9. B。根据“People separate their waste into different bins for paper, plastic, glass and metal.”可知，在回收项目中人们把垃圾分类放入不同的垃圾桶，选B。
10. B。根据“Recycling is not only good for the environment but also good for the economy. It creates jobs in the recycling and manufacturing industries.”可知，回收除了保护环境还能创造就业机会，选B。
11. B。根据“A green lifestyle is becoming more and more popular.”可知，绿色生活方式越来越受欢迎，选B。
12. C。根据“We can turn off lights, TVs and other electrical appliances when we are not using them.”可知，当不使用电器时关闭它们可以节约能源，选C。
13. B。根据“We can use reusable bags instead of plastic bags when we go shopping.”可知，我们可以用可重复使用的袋子代替塑料袋，选B。
14. C。根据“Recycling is also an important part of a green lifestyle.”可知，回收是绿色生活方式的重要部分，选C。
15. C。根据“Trees can absorb carbon dioxide and release oxygen. They can also help to reduce noise pollution.”可知，树可以吸收二氧化碳、释放氧气，还能减少噪音污染，选C。
三、选句填空
11. C。文章开篇强调保护环境的重要性，C选项“为子孙后代确保一个可持续发展的未来是我们的责任”符合语境，引出下文保护环境的行动。
12. D。前文提到减少浪费，D选项“例如，我们可以用可重复使用的购物袋代替塑料袋”举例说明如何减少浪费，衔接紧密。
13. E。前文提到回收利用，E选项“我们可以将垃圾分类并正确回收”进一步阐述回收利用的具体做法。
14. A。前文说种树很重要，A选项“它们可以吸收有害气体并释放氧气”解释了树在生态系统中的作用。
15. B。前文提到提高环保意识，B选项“我们应该鼓励周围的人参加环保活动”说明提高意识的具体做法。
四、根据汉语提示写单词
1. environment
2. pollution
3. energy
4. recycle
5. less
五、根据汉语完成句子
take action
More and more
by planting
for; to
as few
六、短文填空
（一）根据首字母提示补全短文
dirty。前文提到工厂和汽车产生很多脏烟，这会让空气变 “脏”，所以填 dirty。
fresh。树能让空气 “清新”，make the air fresh，故填 fresh。
save。回收纸张、塑料和玻璃能 “节约” 资源，所以用 save。
running。刷牙时不要让水龙头 “流水”，leave sth. doing 表示 “让某物一直处于某种状态”，所以填 running。
better。如果大家都为保护地球做点事，我们的星球会变得 “更好”，用比较级 better。
（二）用括号内单词的正确形式填空
reduce。should 是情态动词，后接动词原形，所以用 reduce。
to plant。It's + adj. + for sb. + to do sth. 是固定句型，所以填 to plant。
is。pollution 是不可数名词，所以 there be 句型中 be 动词用 is。
recycling。by 是介词，后接动词 - ing 形式，所以用 recycling。
to find。try to do sth. 表示 “努力做某事”，所以填 to find。
七、书面表达
Dear classmates,
The importance of living a green life can't be ignored. It helps to protect our environment and make our planet a better place to live.
There are many ways to live green. First, save energy. Turn off lights when leaving rooms and use energy - saving appliances. Second, reduce waste. Use reusable bags instead of plastic ones and avoid disposable products. Third, recycle. Separate waste like paper, plastic and metal for recycling.
Let's take action right now. Every small step counts. If we all work together, we can surely make a difference.
Li Hua
一、单项选择（每小题1分，共10分）
1. —______ do you think we can do to protect the environment
—We can plant more trees.
A. What B. How C. Where D. When
2. It's our duty ______ the environment.
A. protect B. protecting C. to protect D. protected
3. We should use ______ plastic bags to help protect the environment.
A. fewer B. more C. less D. little
4. The government is trying to ______ ways to solve the environmental problems.
A. look for B. find C. find out D. look up
5. —______ is the most serious environmental problem in your opinion
—Pollution, I think.
A. How B. What C. When D. Where
6. We can't see the stars in the sky clearly because of ______ pollution.
A. air B. water C. noise D. light
7. ______ of the students in our class ______ interested in planting trees.
A. Three - fifth; is B. Three - fifths; is
C. Three - fifth; are D. Three - fifths; are
8. It's important for us to save energy. We should ______ the lights when we leave the room.
A. turn on B. turn off C. turn up D. turn down
9. The old man lives ______ in the village, but he doesn't feel ______.
A. alone; alone B. lonely; lonely C. alone; lonely D. lonely; alone
10. —What can we do to make our city more beautiful
—______
A. It's very beautiful. B. We should plant more trees.
C. I like our city. D. I'm proud of our city.
二、阅读理解（每小题2分，共30分）
A
The Earth is our home. We must take care of it. Life today is easier than it was hundreds of years ago, but it has brought some new problems. One of the biggest problems is pollution. We can see it, smell it, drink it and even hear it.
Man has polluted the Earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But now man is slowly polluting the whole world.
Air pollution is still the most serious. It's bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO is now the most dangerous kind of air pollution. It is caused by heavy traffic. We can do something to help fight it. For example, we can go to school by bike or on foot. If there are fewer people driving, there will be less pollution.
The Earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in population at the same time.
1. What was the life like hundreds of years ago
A. It was easier than it is today.
B. It was the same as it is today.
C. It was harder than it is today.
D. It was more interesting than it is today.
2. What is one of the biggest problems today
A. Air pollution. B. Water pollution. C. Noise pollution. D. Pollution.
3. Why was the pollution problem not so serious many years ago
A. Because there were not so many people.
B. Because the people didn't know about pollution.
C. Because the land was used up.
D. Because the river was dirty.
4. What kind of pollution is the most serious
A. Noise pollution. B. Air pollution. C. Water pollution. D. Soil pollution.
5. What can we do to help fight pollution
A. We can burn coal in houses.
B. We can go to school by car.
C. We can go to school by bike or on foot.
D. We can put dirty smoke into the air.
B
Recycling is one of the best ways to protect the environment. It means using things again instead of throwing them away. There are many things that can be recycled, such as paper, plastic, glass and metal.
Recycling paper can save trees. Trees are used to make paper. If we recycle paper, we can use fewer trees. This helps to protect forests. Recycling plastic can reduce the amount of plastic waste in landfills and the ocean. Plastic takes a very long time to break down, so recycling it is very important. Recycling glass and metal can also save energy. Making new glass and metal from recycled materials uses less energy than making them from raw materials.
In many countries, there are special recycling programs. People separate their waste into different bins for paper, plastic, glass and metal. Then the recycling companies collect the waste and take it to factories. At the factories, the waste is processed and turned into new products.
Recycling is not only good for the environment but also good for the economy. It creates jobs in the recycling and manufacturing industries. So, we should all do our part to recycle and make the world a greener place.
6. What does recycling mean
A. Using things again. B. Throwing things away.
C. Making new things. D. Buying new things.
7. What can recycling paper help to protect
A. Plastic. B. Glass. C. Forests. D. Metal.
8. Why is recycling plastic important
A. Because plastic is easy to break down.
B. Because plastic is expensive.
C. Because plastic takes a long time to break down.
D. Because plastic is useful.
9. What do people do in recycling programs
A. They throw all the waste into one bin.
B. They separate waste into different bins.
C. They collect the waste and take it to factories.
D. They make new products from the waste.
10. What is the advantage of recycling besides protecting the environment
A. It makes people rich. B. It creates jobs.
C. It saves water. D. It saves time.
C
A green lifestyle is becoming more and more popular. People are realizing that protecting the environment is not only important but also necessary. There are many ways to live a green life.
One of the ways is to save energy. We can turn off lights, TVs and other electrical appliances when we are not using them. We can also use energy - saving light bulbs. These bulbs use less electricity and last longer. Another way is to reduce waste. We can use reusable bags instead of plastic bags when we go shopping. We can also avoid using disposable (一次性的) products like disposable chopsticks and plastic cups.
Recycling is also an important part of a green lifestyle. We can recycle paper, plastic, glass and metal. By recycling, we can save resources and reduce pollution.
Using public transportation, riding a bike or walking is a great way to live a green life. It can reduce air pollution and save energy. If we live near our workplace or school, we can walk or ride a bike. If we need to travel a longer distance, we can take a bus or subway.
In addition, planting trees is a good way to make our planet greener. Trees can absorb carbon dioxide and release oxygen. They can also help to reduce noise pollution.
11. What is becoming more and more popular
A. A busy lifestyle. B. A green lifestyle. C. A lazy lifestyle. D. A rich lifestyle.
12. How can we save energy according to the passage
A. By using disposable products. B. By using plastic bags.
C. By turning off electrical appliances when not in use. D. By using more electricity.
13. What can we use instead of plastic bags
A. Disposable bags. B. Reusable bags. C. Paper bags. D. Plastic cups.
14. What is an important part of a green lifestyle
A. Throwing things away. B. Using disposable products.
C. Recycling. D. Using more energy.
15. What can trees do
A. They can absorb oxygen. B. They can release carbon dioxide.
C. They can help to reduce noise pollution. D. They can make our planet dirtier.
三、选句填空（每小题2分，共10分）
根据短文内容，从方框中选择合适的句子填入空白处。
The importance of protecting the environment cannot be overstated. 1. ______ We should take action to make our planet a better place. One of the first steps is to reduce waste. We can start by using reusable items instead of disposable ones. 2. ______ Another important aspect is to recycle. Recycling helps to save resources and reduce pollution. 3. ______ We should also plant more trees. Trees are not only beautiful but also play a crucial role in our ecosystem. 4. ______ Finally, we need to raise awareness about environmental protection. 5. ______ Only when everyone realizes the importance of protecting the environment can we make a real difference.
A. They can absorb harmful gases and release oxygen.
B. We should encourage people around us to take part in environmental protection activities.
C. It is our responsibility to ensure a sustainable future for generations to come.
D. For example, we can use reusable shopping bags instead of plastic bags.
E. We can separate waste into different categories and recycle them properly.
四、根据汉语提示写单词（每小题1分，共5分）
1. We should protect the ______ (环境) for our future.
2. The government is taking action to reduce air ______ (污染).
3. We can save ______ (能源) by turning off lights when we leave a room.
4. It's important to ______ (回收利用) waste paper to save trees.
5. We should use ______ (更少的) water to save the Earth.
五、根据汉语完成句子（每小题1.5分，共7.5分）
1. 我们应该采取行动来保护野生动物。
We should ______ ______ to protect wild animals.
2. 越来越多的人意识到环保的重要性。
______ ______ people are realizing the importance of environmental protection.
3. 我们可以通过种树使我们的城市更绿。
We can make our city greener ______ ______ trees.
4. 节约用水对我们来说很重要。
It's very important ______ us ______ save water.
5. 我们应该尽可能少用塑料袋。
We should use ______ ______ plastic bags as possible.
六、短文填空（每空1分，共20分）
（一）根据首字母提示补全短文
The Earth is in great danger. There are many environmental problems. One of the biggest problems is air pollution. Factories and cars produce a lot of dirty smoke. This makes the air d 1_____. It's bad for our health. Another problem is water pollution. People throw a lot of rubbish into rivers and lakes. The water in many rivers is too dirty to drink. We should take action to protect the Earth. We can plant more trees. Trees can make the air f 2_____. We should also recycle. We can recycle paper, plastic and glass. This can s 3_____ resources. We should use less water. Don't leave the tap r 4_____ when we brush our teeth. If we all do something to protect the Earth, our planet will be a b 5 _____place.
（二）用括号内单词的正确形式填空
1. We should ______ (reduce) waste to protect the environment.
2. It's necessary for us ______ (plant) more trees.
3. There ______ (be) a lot of pollution in the city.
4. We can make our school greener by ______ (recycle) waste.
5. The government is trying ______ (find) ways to solve the environmental problems.
七、书面表达（10分）
假设你是李华，学校将举办“绿色生活，从我做起”的活动，请你写一篇英语短文，介绍一些绿色生活的方式。内容包括：
1. 绿色生活的重要性；
2. 具体的绿色生活方式（如节约能源、减少浪费、回收利用等）；
3. 呼吁大家一起行动。（词数80左右）
答案
一、单项选择
1. A。根据回答“We can plant more trees.”可知，此处询问的是可以做什么来保护环境，用What。
2. C。It's one's duty to do sth. 表示“做某事是某人的责任”，it是形式主语，真正的主语是后面的动词不定式，所以选C。
3. A。plastic bags是可数名词复数，且根据保护环境的语境，应该是用更少的塑料袋，fewer修饰可数名词复数，less修饰不可数名词，所以选A。
4. B。look for强调寻找的动作；find强调找到的结果；find out侧重于经过一番努力查明、弄清楚；look up查阅（资料等）。此处表示政府努力找到解决环境问题的方法，强调结果，用find，选B。
5. B。根据回答“Pollution, I think.”可知，询问的是在对方看来最严重的环境问题是什么，用What。
6. A。看不到星星是因为空气污染，空气污染物会遮挡视线，所以选A。
7. D。分数表达法是分子用基数词，分母用序数词，当分子大于1时，分母用复数形式，所以五分之三表达为Three - fifths；“分数 + of + 名词复数”作主语时，谓语动词用复数形式，所以选D。
8. B。turn on打开；turn off关闭；turn up调高（音量等）；turn down调低（音量等）。离开房间时应该关闭灯，选B。
9. C。alone作副词时表示“独自”，强调客观上独自一人；lonely作形容词，意为“孤独的”，强调主观上的感受。第一空修饰动词lives用副词alone，第二空feel是系动词，后接形容词lonely，选C。
10. B。A选项“它非常漂亮”；C选项“我喜欢我们的城市”；D选项“我为我们的城市感到骄傲”；B选项“我们应该种更多的树”，符合对“如何让城市更美丽”的回答，选B。
二、阅读理解
1. C。根据“Life today is easier than it was hundreds of years ago”可知，几百年前的生活比现在更艰难，选C。
2. D。根据“One of the biggest problems is pollution.”可知，如今最大的问题之一是污染，选D。
3. A。从“Many years ago, the problem was not so serious because there were not so many people.”可知，很多年前污染问题不严重是因为人没那么多，选A。
4. B。根据“Air pollution is still the most serious.”可知，空气污染是最严重的，选B。
5. C。根据“For example, we can go to school by bike or on foot. If there are fewer people driving, there will be less pollution.”可知，我们可以通过骑车或步行上学来帮助对抗污染，选C。
6. A。根据“It means using things again instead of throwing them away.”可知，回收意味着再次使用物品，选A。
7. C。从“Recycling paper can save trees. This helps to protect forests.”可知，回收纸张有助于保护森林，选C。
8. C。根据“Plastic takes a very long time to break down, so recycling it is very important.”可知，回收塑料重要是因为塑料分解需要很长时间，选C。
9. B。根据“People separate their waste into different bins for paper, plastic, glass and metal.”可知，在回收项目中人们把垃圾分类放入不同的垃圾桶，选B。
10. B。根据“Recycling is not only good for the environment but also good for the economy. It creates jobs in the recycling and manufacturing industries.”可知，回收除了保护环境还能创造就业机会，选B。
11. B。根据“A green lifestyle is becoming more and more popular.”可知，绿色生活方式越来越受欢迎，选B。
12. C。根据“We can turn off lights, TVs and other electrical appliances when we are not using them.”可知，当不使用电器时关闭它们可以节约能源，选C。
13. B。根据“We can use reusable bags instead of plastic bags when we go shopping.”可知，我们可以用可重复使用的袋子代替塑料袋，选B。
14. C。根据“Recycling is also an important part of a green lifestyle.”可知，回收是绿色生活方式的重要部分，选C。
15. C。根据“Trees can absorb carbon dioxide and release oxygen. They can also help to reduce noise pollution.”可知，树可以吸收二氧化碳、释放氧气，还能减少噪音污染，选C。
三、选句填空
11. C。文章开篇强调保护环境的重要性，C选项“为子孙后代确保一个可持续发展的未来是我们的责任”符合语境，引出下文保护环境的行动。
12. D。前文提到减少浪费，D选项“例如，我们可以用可重复使用的购物袋代替塑料袋”举例说明如何减少浪费，衔接紧密。
13. E。前文提到回收利用，E选项“我们可以将垃圾分类并正确回收”进一步阐述回收利用的具体做法。
14. A。前文说种树很重要，A选项“它们可以吸收有害气体并释放氧气”解释了树在生态系统中的作用。
15. B。前文提到提高环保意识，B选项“我们应该鼓励周围的人参加环保活动”说明提高意识的具体做法。
四、根据汉语提示写单词
1. environment
2. pollution
3. energy
4. recycle
5. less
五、根据汉语完成句子
take action
More and more
by planting
for; to
as few
六、短文填空
（一）根据首字母提示补全短文
dirty。前文提到工厂和汽车产生很多脏烟，这会让空气变 “脏”，所以填 dirty。
fresh。树能让空气 “清新”，make the air fresh，故填 fresh。
save。回收纸张、塑料和玻璃能 “节约” 资源，所以用 save。
running。刷牙时不要让水龙头 “流水”，leave sth. doing 表示 “让某物一直处于某种状态”，所以填 running。
better。如果大家都为保护地球做点事，我们的星球会变得 “更好”，用比较级 better。
（二）用括号内单词的正确形式填空
reduce。should 是情态动词，后接动词原形，所以用 reduce。
to plant。It's + adj. + for sb. + to do sth. 是固定句型，所以填 to plant。
is。pollution 是不可数名词，所以 there be 句型中 be 动词用 is。
recycling。by 是介词，后接动词 - ing 形式，所以用 recycling。
to find。try to do sth. 表示 “努力做某事”，所以填 to find。
七、书面表达
Dear classmates,
The importance of living a green life can't be ignored. It helps to protect our environment and make our planet a better place to live.
There are many ways to live green. First, save energy. Turn off lights when leaving rooms and use energy - saving appliances. Second, reduce waste. Use reusable bags instead of plastic ones and avoid disposable products. Third, recycle. Separate waste like paper, plastic and metal for recycling.
Let's take action right now. Every small step counts. If we all work together, we can surely make a difference.
Li Hua