Unit 13 Section B 3a～Self Check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 B (3a~Self Check)   一、用单词的正确形式填空。 1. The river used to be so clean, but now it is __________ (pollute). 2. We have seen many __________ (change) in the environment recently. 3. People should take public __________ (transport) more often. 4. The river is polluted by __________ (factory) near the city. 5. The air pollution is getting __________ (bad) and worse. 二、根据首字母或句意提示写出单词。 1. The river used to be so clean, but now it's p__________. 2. We have seen many c__________ in the environment. 3. People should take public t__________ more often. 4. The river is polluted by f__________ near the city. 5. The air pollution is getting worse and w__________. 三、单项选择。 ( ) 1. The river used to ______ so clean. A. be  B. being  C. been ( ) 2. We have seen many changes ______ the environment. A. on  B. in  C. at ( ) 3. People should take public transportation more ______. A. often  B. oftener  C. oftenly ( ) 4. The river is polluted ______ factories. A. by  B. with  C. for ( ) 5. The air pollution is getting ______ and worse. A. bad  B. worse  C. worst ( ) 6. We should write a letter ______ the city mayor. A. to  B. for  C. with ( ) 7. What are the environmental problems ______ your town? A. on  B. in  C. at ( ) 8. What or who is ______ these problems? A. cause  B. caused  C. causing ( ) 9. I suggest ______ the bus instead of driving. A. take  B. to take  C. taking ( ) 10. We should try our best ______ the environment. A. protect  B. to protect  C. protecting 四、选词填空（二选一）。 1. The river used to be so __________ (clean / dirty), but now it's polluted. 2. We have seen many __________ (changes / chances) in the environment. 3. People should take public __________ (transportation / translate) more often. 4. The river is polluted by __________ (factories / factors) near the city. 5. The air pollution is getting __________ (worse / worst) and worse. 五、根据汉语意思完成句子。 1. 这条河过去是如此干净。 The river __________ to be so __________. 2. 我们已经看到了环境方面的许多变化。 We have seen many __________ in the __________. 3. 人们应该更经常乘坐公共交通工具。 People should take public __________ more __________. 4. 河流被城市附近的工厂污染了。 The river is __________ by __________ near the city. 5. 空气污染变得越来越严重。 The air pollution is getting __________ and __________. 六、阅读还原（七选五）。 根据短文内容，从方框中的七个选项中选出五个合适的选项填入空白处，使短文意思通顺、连贯。 Environmental problems are becoming more and more serious in many cities. 1.__________ The air is polluted by cars and factories. The river is dirty because factories put waste into it. 2.__________ There are many things we can do to help solve these problems. First, we should use public transportation more often. 3.__________ Second, we can save electricity by turning off lights when we leave a room. Third, we should recycle paper, plastic, and glass. 4.__________ The government also has an important role to play. They should make laws to stop factories from polluting the river. 5.__________ Together, we can make our city a better place to live. A. This will help reduce air pollution. B. The streets are full of rubbish. C. They should also encourage people to use renewable energy. D. People are throwing litter everywhere. E. This will help reduce waste. F. The city is very beautiful. G. Everyone should drive more. 七、语法填空。 阅读下面短文，在空白处填入一个适当的词，或使用括号内所给单词的正确形式填空。 Dear Mayor, I am writing to you about the environmental 1.__________ (problem) in our city. The river near the city center 2.__________ (be) very dirty now. It used to be so clean, 3.__________ now factories are putting waste into it. The water is 4.__________ (pollute) and there are no more fish 5.__________ (swim) in it. The air is also badly polluted. There are too many 6.__________ (car) on the roads, and factories are burning coal, 7.__________ (send) black smoke into the sky. People are 8.__________ (worry) about their health. I have some suggestions to solve these problems. First, we should encourage people 9.__________ (take) public transportation instead of driving. Second, the government should make laws to stop factories from polluting the river. Third, we can organize clean-up activities to remove rubbish from public places. I hope you will take my suggestions seriously. Let's work together 10.__________ (make) our city a better place. Sincerely, A Concerned Citizen 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。 Many cities around the world are facing serious environmental problems. Air pollution, water pollution, and land pollution are common issues that affect people's health and quality of life. In one city, the river used to be clean and full of fish. Now it is dirty and smells bad. Factories along the river put waste into the water. People also throw rubbish into the river. The government has tried to clean it up, but the problem continues. The air in the city is also polluted. There are too many cars on the roads, and they create exhaust fumes. Factories burn coal and send black smoke into the air. On some days, the air is so bad that people are advised to stay indoors. To solve these problems, the government has made some new laws. Factories are now required to treat their waste before putting it into the river. People are encouraged to use public transportation or ride bikes instead of driving. Recycling programs have been started to reduce waste. Environmental groups are also helping. They organize clean-up activities and teach people about the importance of protecting the environment. They believe that everyone can make a difference. ( ) 1. What happened to the river in the city? A. It became cleaner than before. B. It became dirty and smelly. C. It dried up. ( ) 2. What causes air pollution in the city? A. Too many cars and factories burning coal. B. People throwing rubbish. C. The river pollution. ( ) 3. What has the government done to solve the problems? A. They closed all the factories. B. They made new laws and started recycling programs. C. They asked people to move away. ( ) 4. What do environmental groups do to help? A. They organize clean-up activities and teach people. B. They give money to the government. C. They build new factories. ( ) 5. What can we learn from the passage? A. Pollution problems cannot be solved. B. Only the government can solve pollution problems. C. Everyone can make a difference in protecting the environment. 九、作文。 请你根据以下提示，给市长写一封信，描述你所在城市的环境问题并提出建议。内容包括： 1. 存在什么环境问题？ 2. 这些问题在哪里发生？ 3. 什么或谁导致了这些问题？ 4. 提出解决这些问题的建议。 要求：语句通顺，语法正确，词数80词左右。 Dear Mayor, Sincerely, A Concerned Citizen 参考答案 一、单词正确形式填空 1. polluted 2. changes 3. transportation 4. factories 5. worse 二、首字母或句意提示 1. polluted 2. changes 3. transportation 4. factories 5. worse 三、单项选择 1. A 2. B 3. A 4. A 5. B 6. A 7. B 8. C 9. C 10. B 四、选词填空 1. clean 2. changes 3. transportation 4. factories 5. worse 五、完成句子 1. used, clean 2. changes, environment 3. transportation, often 4. polluted, factories 5. worse, worse 六、阅读还原 1. B 2. D 3. A 4. E 5. C 七、语法填空 1. problems 2. is 3. but 4. polluted 5. swimming 6. cars 7. sending 8. worried 9. to take 10. to make 八、阅读理解 1. B 2. A 3. B 4. A 5. C 九、作文（参考范文） Dear Mayor, I am writing to you about the environmental problems in our city. The river near the park is very dirty. Factories are putting waste into it, and people are throwing rubbish into the water. The air is also polluted because there are too many cars and factories burning coal. I suggest that the government should make laws to stop factories from polluting the river. We should also encourage people to take public transportation or ride bikes instead of driving. Recycling programs should be started to reduce waste. Let's work together to make our city clean and beautiful. Sincerely, A Concerned Citizen 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 $