Unit 13 We're trying to save the earth! Section A(3a-3b)课时作业（含答案）【人教九年级英语】

中小学教育资源及组卷应用平台
Unit 13 We're trying to save the earth!
第二课时 Section A(3a-3b)
【基础训练】
一、根据句意，选择所给单词并用其适当形式填空。
cruel, law ,industry ,science ,harm
1.Smoking is to yourself and people around you.
2.I can't stand people who are to little animals.
3.My father has been working in the oil for five years.
4. He is a great scientist who has made a lot of discoveries.
5. With the development of society,some are cancelled and some new ones are made.
二、单项选择。
( )6.It's really bad for your health to go to school or work breakfast.
A.for B.without C.among D.during
( )7.I saw a good film, I can't remember its name.
A.so B.or C.for D.but
( )8. The number of the whales smaller and smaller because of human activities now.
A.were B.was C.is D.are
( )9.-What do you think of the plan
-It's great! we students our teacher likes it very much.
A.Both; and B.Either;or C.Neither; nor D. Not only; but also
( )10.-Congratulations! You big progress in the last three years.
-Thank you, Mr. Li. I'll never forget the good times in Junior High.
A.make B. made C. have made D. will make
三、根据汉语意思完成下列句子。每空一词。
11.你能告诉我什么是食物链吗？
Could you tell me what is
12.事实上，它将给所有的海洋生物带来危害。
it will danger to all ocean life.
13.我们此刻正在泰山顶上等待日出。
We're waiting for the sunrise Mount Tai at the moment.
14.这张纸太大了，请把它的底部剪掉。
The piece of paper is too large.Please the bottom of it.
15.长时间使用电脑对你的眼睛有害。
It is your eyes to use the computer for a long time.
【能力提升】
四、阅读理解。
Southern white rhinos(犀牛) mainly live in Africa. They are very large in size, about 4 meters long, 1.75 meters high, and over two tons in weight.There are two horns （角） on the nose. The front horn is over half a meter long, while the other one is smaller. Southern white rhinos are not really white. They are grey in color. "White"may come from the Afrikaans word for "wide".It has some connection with their wide mouths.
Southern white rhinos live on grass, leaves,fruit and so on. They have very poor eyesight.However, they have good hearing and an excellent sense of smell. Their skin(皮肤) is nearly 5 cm thick but is very sensitive. During the day,they try to find a cool place to avoid sunburn. Southern white rhinos lie in mud（泥浆）when they can,as it sticks to their skin and protects them from the bright African sun.
Some humans kill rhinos for their horns.They sell horns to those who believe horns have magic powers or can treat sickness. It puts southern white rhinos in danger.
Now many actions are taken to protect southern white rhinos. The international trade in rhino horn has been stopped in the world. Besides, many protected areas have been built, especially in South Africa. Up to 2020, more than 20 countries have made rules to protect southern white rhinos.Today the number of southern white rhinos has increased to over 20,000 in the wild.
( )16. Where do southern white rhinos mainly live
A. In Europe. B. In America. C. In Africa.
( )17. What color are southern white rhinos
A.Red. B.Blue. C.Grey.
( )18. What does the underlined word "sensitive"probably mean in Chinese in Paragraph 2
A.健康的 B.敏感的 C.光滑的
( )19. Why do some humans kill southern white rhinos
A. For their horns. B. For their meat. C. For their noses.
( )20. What is the last paragraph mainly about
A. Ways to feed southern white rhinos.
B. Actions of protecting southern white rhinos.
C. Places for southern white rhinos to live in.
五、阅读下面短文，用所给单词的适当形式填空。
number,catch,realize, science,slow, group,if, famous, strong,develop
Shark fin soup is not new to lots of people.This dish is 21 and expensive. Many people would like to enjoy it. However, they may not 22 that they are killing a whole shark when they do that each time.
It is cruel of people to cut off sharks' fins after 23 them and then throw them back into the ocean. Without a fin, a shark can't swim anymore and dies 24 .It is also harmful to the environment. As we know,there is a food chain in the ocean's ecosystem.Sharks are at the top of it. 25 there are fewer sharks,it will make all ocean life in danger. It is wrong to believe that sharks will never disappear because they are 26 than others in the food chain. But actually, people catch and trade about 70 million sharks every year. The 27 of some kinds of sharks have fallen greatly in the last 20 to 30 years.
There are some environmental protection 28 around the world. Wild Aid and the WWF are two of them. They are letting more people know about "finning". According to them, laws should 29 by governments to protect sharks. Are shark fins good for our health No 30.studies have proved(证明) it so far.So we should stop eating shark fins and help save sharks.
21. 22. 23. 24. 25. .
26. 27. 28. 29. 30. .
参考答案
一、1.harmful 2. cruel 3.industry 4.scientific 5.laws
二、6~10.BDCDC
三、11. the food chain 12. In fact; bring 13. at the top of 14. cut off
15.harmful to
四、16~20.CCBAB
五、21.famous 22.realize 23.catching 24.slowly 25.If 26.stronger
27.numbers 28.groups 29.be developed 30.scientific
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