Unit 13 Section A 3a～3b同步练习 2025-2026学年人教版（2012）英语九年级全册

Unit 13 We're trying to save the earth! Section A (3a~3b)   一、用单词的正确形式填空。 1. When people catch sharks, they cut off their __________ (fin) and throw the sharks back into the ocean. 2. This is not only cruel, but also __________ (harm) to the environment. 3. Without a fin, a shark can no longer swim and slowly __________ (die). 4. Sharks are at the top of the food chain in the ocean's __________ (ecosystem). 5. Environmental protection groups are teaching the public about __________ (fin). 二、根据首字母或句意提示写出单词。 1. Many have heard of shark fin s__________. 2. When people catch sharks, they cut off their f__________ and throw the sharks back. 3. This is not only cruel, but also h__________ to the environment. 4. Sharks are at the top of the food c__________ in the ocean's ecosystem. 5. Environmental protection groups have asked governments to develop l__________ to stop the sale of shark fins. 三、单项选择。 ( ) 1. Many have heard ______ shark fin soup. A. of  B. for  C. in ( ) 2. Do you realize that you're killing a whole shark each time you enjoy a bowl ______ shark fin soup? A. of  B. with  C. for ( ) 3. When people catch sharks, they cut ______ their fins. A. off  B. down  C. up ( ) 4. This is not only cruel, ______ also harmful to the environment. A. and  B. but  C. or ( ) 5. Without a fin, a shark can no longer swim and slowly ______. A. die  B. dies  C. dying ( ) 6. Sharks are ______ the top of the food chain. A. in  B. on  C. at ( ) 7. If their numbers drop too low, it will bring danger ______ all ocean life. A. to  B. for  C. with ( ) 8. Around 70 million sharks ______ caught and traded every year. A. is  B. are  C. be ( ) 9. Environmental protection groups are teaching the public ______ "finning". A. about  B. with  C. for ( ) 10. No scientific studies have shown that shark fins are good ______ health. A. to  B. for  C. with 四、选词填空（从方框中选择合适的词填空，每词限用一次）。 so although if but when 1. Many people do not realize they are killing a whole shark __________ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, __________ if their numbers drop, the ocean's ecosystem will be in danger. 3. Many think that sharks are too strong to be endangered, __________ they are wrong. 4. __________ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day __________ we do not do something to stop the sale of shark fins. 五、根据汉语意思完成句子。 1. 许多人听说过鱼翅汤。 Many have __________ __________ shark fin soup. 2. 当人们抓到鲨鱼时，他们割下它们的鱼鳍，然后把鲨鱼扔回海里。 When people catch sharks, they __________ __________ their fins and throw the sharks back into the ocean. 3. 这不仅残忍，而且对环境有害。 This is not only cruel, __________ also __________ to the environment. 4. 鲨鱼位于海洋生态系统食物链的顶端。 Sharks are at the __________ of the food __________ in the ocean's ecosystem. 5. 如果它们的数量下降得太低，将会给所有海洋生物带来危险。 If their numbers __________ too low, it will bring __________ to all ocean life. 六、完形填空。 阅读下面短文，从A、B、C三个选项中选出可以填入空白处的最佳选项。 Many people enjoy eating shark fin soup, but they don't realize that they are 1.__________ a whole shark each time they eat it. When people catch sharks, they cut 2.__________ their fins and throw the sharks back into the ocean. This is cruel and 3.__________ to the environment. Without a fin, a shark cannot swim and 4.__________ dies. Sharks are at the top of the food chain in the ocean's ecosystem. 5.__________ their numbers drop too low, it will bring danger to all ocean life. Many people believe that sharks can never be endangered 6.__________ they are the strongest. But in fact, around 70 million sharks are caught every year. The numbers of some kinds of sharks have 7.__________ by over 90 percent in the last 20 to 30 years. Environmental protection groups are teaching the public about "finning". They have asked governments to 8.__________ laws to stop the sale of shark fins. So far, no scientific studies have shown that shark fins are 9.__________ for health. We should help 10.__________ the sharks! ( ) 1. A. saving  B. killing  C. helping ( ) 2. A. off  B. down  C. up ( ) 3. A. helpful  B. harmful  C. careful ( ) 4. A. slowly  B. quickly  C. suddenly ( ) 5. A. If  B. Although  C. Because ( ) 6. A. so  B. but  C. because ( ) 7. A. risen  B. fallen  C. increased ( ) 8. A. develop  B. break  C. follow ( ) 9. A. bad  B. good  C. well ( ) 10. A. kill  B. eat  C. save 七、补全对话。 根据对话内容，从方框中选择恰当的句子补全对话，其中有一项多余。 A: Have you ever tried shark fin soup? B: Yes, I have. But I won't eat it anymore. A: 1.__________ B: Because I learned that it's harmful to sharks and the environment. A: 2.__________ B: When people catch sharks, they cut off their fins and throw the sharks back. A: 3.__________ B: Without fins, sharks can't swim and slowly die. A: 4.__________ B: Yes, their numbers have fallen a lot. Some kinds have dropped by over 90 percent. A: 5.__________ B: We can refuse to eat shark fin soup and tell others about this problem. A. That's terrible! B. Why not? C. What happens to the sharks? D. Are sharks becoming endangered? E. What can we do to help? F. Where can we buy shark fin soup? 八、阅读理解。 阅读下面短文，从每题所给的A、B、C三个选项中选出最佳选项。 Shark fin soup is a traditional dish in some cultures, but it comes at a great cost to sharks. When people catch sharks, they cut off their fins and throw the sharks back into the ocean. This practice is called "finning". Without their fins, sharks cannot swim and slowly die. This is not only cruel but also harmful to the environment. Sharks are at the top of the food chain in the ocean's ecosystem. They play an important role in keeping the ocean healthy. If shark numbers drop too low, it will affect all ocean life. Many people think sharks are too strong to be endangered, but the truth is different. Around 70 million sharks are caught every year. The numbers of some shark species have fallen by over 90 percent in the last 20 to 30 years. Environmental groups like WildAid and the WWF are working to protect sharks. They teach the public about the dangers of finning and ask governments to make laws against the sale of shark fins. There is no scientific proof that shark fins are good for health, so there is no reason to keep eating them. By saying no to shark fin soup, we can help save sharks. ( ) 1. What is "finning"? A. Catching sharks for food. B. Cutting off sharks' fins and throwing them back. C. Protecting sharks from danger. ( ) 2. Why are sharks important to the ocean? A. Because they are the largest animals. B. Because they are at the top of the food chain. C. Because they provide food for other fish. ( ) 3. How many sharks are caught every year? A. About 70 million.  B. About 90 million.  C. About 20 million. ( ) 4. What have environmental groups done to protect sharks? A. They have stopped people from fishing. B. They have taught the public and asked for laws. C. They have bought all the shark fins. ( ) 5. What can we do to help save sharks? A. Eat more shark fin soup.  B. Refuse to eat shark fin soup.  C. Catch more sharks. 参考答案 一、单词正确形式填空 1. fins 2. harmful 3. dies 4. ecosystem 5. finning 二、首字母或句意提示 1. soup 2. fins 3. harmful 4. chain 5. laws 三、单项选择 1. A 2. A 3. A 4. B 5. B 6. C 7. A 8. B 9. A 10. B 四、选词填空 1. when 2. so 3. but 4. Although 5. if 五、完成句子 1. heard of 2. cut off 3. but, harmful 4. top, chain 5. drop, danger 六、完形填空 1. B 2. A 3. B 4. A 5. A 6. C 7. B 8. A 9. B 10. C 七、补全对话 1. B 2. C 3. A 4. D 5. E 八、阅读理解 1. B 2. B 3. A 4. B 5. B 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $