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译林版八年级上册Unit 7 The natural world达标卷
一、单项选择（每题1分，共15分）
1. The Amazon rainforest is one of ______ ecosystems in the world.
A. large B. larger C. largest D. the largest
2. —______ do you know about ecosystems
—I know they are very important for the environment.
A. What B. Where C. How D. Why
3. We should ______ the balance of nature.
A. keep B. to keep C. keeping D. kept
4. The earth is our home. We must ______ it.
A. protect B. protecting C. to protect D. protected
5. There are many kinds of animals ______ in the ocean.
A. live B. lives C. living D. to live
6. Some plants can only grow in certain ______.
A. environments B. environment C. an environment D. the environment
7. The soil in the forest is very ______. It can hold a lot of water.
A. dry B. wet C. rich D. poor
8. We should stop ______ the rivers. It's bad for the ecosystem.
A. pollute B. polluting C. to pollute D. polluted
9. The birds fly to the south to ______ the cold winter.
A. avoid B. meet C. enjoy D. catch
10. It's important for us ______ more about the natural world.
A. learn B. to learn C. learning D. learned
11. The sun ______ in the east and sets in the west.
A. rise B. rises C. rose D. rising
12. We can use ______ energy, like solar energy and wind energy.
A. clean B. dirty C. waste D. polluted
13. The forest provides food and shelter ______ many animals.
A. for B. with C. to D. of
14. We should plant more trees to ______ the air.
A. dirty B. clean C. pollute D. waste
15. The ______ of the ocean is still a mystery to us.
A. deep B. deeper C. deepest D. depth
二、完形填空（每题1分，共10分）
The natural world is full of wonders. Ecosystems are very important. They 1 different living things together.
Forests are a kind of ecosystem. Trees in the forest 2 oxygen for us to breathe. They also provide homes for many animals. The soil in the forest is 3 with nutrients, which helps plants grow.
Oceans are another important ecosystem. They cover a large part of the earth. There are 4 kinds of fish and other sea animals in the ocean. The ocean is like a big 5. It holds a lot of water and is home to many strange and wonderful creatures.
However, our ecosystems are in 6 now. People cut down too many trees, and 7 is polluted. This makes it difficult for some plants and animals to 8.
We must do something to protect our ecosystems. We can plant more trees, 9 pollution, and use clean energy. By doing these things, we can help keep the balance of nature and make the earth a 10 place for all living things.
1. A. bring B. take C. carry D. make
2. A. produce B. use C. burn D. waste
3. A. poor B. rich C. dry D. wet
4. A. few B. little C. many D. much
5. A. house B. factory C. school D. library
6. A. safety B. danger C. health D. happiness
7. A. air B. food C. water D. soil
8. A. die B. live C. eat D. sleep
9. A. increase B. reduce C. make D. keep
10. A. worse B. better C. harder D. poorer
三、阅读理解（每题2分，共20分）
A
The Amazon rainforest is one of the most important ecosystems in the world. It is often called the “lungs of the earth” because it produces a large amount of oxygen.
The Amazon rainforest is home to millions of plants and animals. Many of them can only be found in this rainforest. There are colorful birds, strange insects, and large mammals like jaguars.
However, the Amazon rainforest is facing many problems. People are cutting down trees for wood and to make room for farms. This is destroying the homes of many plants and animals. Also, pollution is a big problem. The rivers in the rainforest are getting dirtier.
We need to protect the Amazon rainforest. We can support organizations that work to save it. We can also reduce our use of products made from rainforest trees.
1. Why is the Amazon rainforest called the “lungs of the earth”
A. Because it is very big.
B. Because it is home to many animals.
C. Because it produces a large amount of oxygen.
D. Because it is full of colorful plants.
2. What can be found in the Amazon rainforest
A. Only birds. B. Only insects.
C. Only mammals. D. Many plants and animals.
3. What problems is the Amazon rainforest facing
A. People are planting too many trees.
B. People are cutting down trees and causing pollution.
C. There are too many animals.
D. There is not enough water.
4. How can we protect the Amazon rainforest
A. By cutting down more trees.
B. By using more products made from rainforest trees.
C. By supporting organizations that work to save it.
D. By polluting the rivers.
5. What's the main idea of the passage
A. The beauty of the Amazon rainforest.
B. The importance of the Amazon rainforest and the problems it faces.
C. The animals in the Amazon rainforest.
D. The plants in the Amazon rainforest.
B
The ocean is a large and mysterious ecosystem. It covers more than 70% of the earth's surface.
There are many different kinds of sea animals in the ocean. Some are small, like shrimps, and some are huge, like whales. The ocean also has a wide variety of plants. Seaweed is one of the common plants in the ocean.
The ocean plays an important role in our lives. It provides us with food, like fish and shellfish. It also helps to regulate the earth's climate.
However, the ocean is being polluted. People are throwing garbage into the ocean, and factories are pouring waste water into it. This is harmful to the sea animals and plants.
We should take action to protect the ocean. We can reduce the use of plastic products, clean up beaches, and support laws to protect the ocean environment.
1. What does the ocean cover
A. Less than 70% of the earth's surface.
B. More than 70% of the earth's surface.
C. About 50% of the earth's surface.
D. Only a small part of the earth's surface.
2. What can be found in the ocean
A. Only sea animals. B. Only sea plants.
C. Both sea animals and plants. D. Nothing.
3. What does the ocean provide us with
A. Only food. B. Only climate regulation.
C. Both food and climate regulation. D. Nothing useful.
4. What is happening to the ocean
A. It is getting cleaner.
B. It is being polluted.
C. It is becoming larger.
D. It is becoming smaller.
5. How can we protect the ocean
A. By using more plastic products.
B. By throwing more garbage into the ocean.
C. By supporting laws to protect the ocean environment.
D. By pouring more waste water into the ocean.
四、词汇运用（每题1分，共15分）
A) 根据句意及首字母提示填空
1. The forest is a very important e______. It is home to many animals.
2. We should p______ the earth. It is our only home.
3. The soil in the field is r______ with nutrients.
4. There are many k______ of plants in the rainforest.
5. We should use c______ energy, like solar energy.
B) 用所给单词的适当形式填空
6. The sun ______ (rise) in the east every day.
7. We can learn a lot about the natural world by ______ (read) books.
8. The river is ______ (pollute). We should clean it up.
9. The forest provides food and ______ (shelter) for animals.
10. We should stop ______ (cut) down trees.
C) 选词并用其适当形式填空
be, with, have, protect, enjoy
11. The ocean ______ home to many sea animals.
12. We should live ______ nature in harmony.
13. Let's ______ the beauty of the natural world.
14. We must ______ our earth.
15. Each ecosystem ______ its own features.
五、句型转换（每题2分，共10分）
1. The forest is very important.（改为感叹句）
______ ______ the forest is!
2. We should protect the environment.（改为一般疑问句）
______ we ______ the environment
3. The river is polluted.（对划线部分提问）
______ ______ the river
4. They are working to save the ecosystem.（改为否定句）
They ______ ______ to save the ecosystem.
5. The sun rises in the east.（对划线部分提问）
______ ______ the sun ______
六、书面表达（20分）
请以“Protect the Natural World”为题，写一篇短文，谈谈保护自然世界的重要性以及我们可以采取的措施。字数不少于80字。
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
答案
一、1-5 DAAAC 6-10 ACBAB 11-15 BAABD
二、1-5 AABCA 6-10 BCBAB
三、A：1-5 CDBCC B：1-5 BCCBC
四、A) 1. ecosystem 2. protect 3. rich 4. kinds 5. clean
B) 6. rises 7. reading 8. polluted 9. shelter 10. cutting
C) 11. is 12. with 13. enjoy 14. protect 15. has
五、1. How important 2. Should; protect 3. What's wrong with 4. aren't working 5. Where does; rise
六、Protect the Natural World
The natural world is of great importance to us. Ecosystems like forests and oceans provide us with clean air, water, and food. They are also home to countless plants and animals, which play vital roles in maintaining the balance of nature.
However, the natural world is facing serious threats. Deforestation, pollution, and over - hunting are destroying habitats and endangering many species. If we don't act, we will lose the beauty and benefits that nature offers.
We can take many measures to protect it. Firstly, we should plant more trees and protect existing forests. Secondly, we need to reduce pollution by properly disposing of waste and using clean energy. Thirdly, we can support wildlife conservation organizations and raise awareness about the importance of the natural world.
In conclusion, protecting the natural world is protecting ourselves. Let's take action now to ensure a sustainable future for both humans and nature.

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