2020-2021学年人教新目标九年级全册Unit13SectionA1a-2d.同步练习

Unit13 Section A 1a-2d同步练习 I. 根据句意和首字母提示填写单词。

1. Throwing l everywhere is harmful to the environment. 2．There is only a little water at the b of the bottle. How can the crow get it? 3．Tom lives by the sea. His father is a f and he catches fish every day. 4．The new mobile phone c me more than 3,000 yuan. 5．We should use cloth bags instead of p ones when we go shopping. II. 用括号内所给单词的适当形式填空。

6. We must do something useful to stop (pollute)． 7．You＇d better not use (wood) chopsticks when you buy takeaway food. 8．Kate used to (collect) coins, but now she likes stamps very much. 9．Lots of rubbish was (throw) into the river. So the water is dirty now. 10．Remember (bring) a bag when you go to the supermarket. III. 单项选择。

11. — You＇re in a hurry. Where are you going? — To the cinema. Sue for me outside. A. waits B. waited　 C. is waiting D. was waiting 12. David fell fast asleep while he a newspaper. A. reads B. has read C. was reading D. read 13. She used to a bus to school, but now she is used to to school. A. taking; walk B. take; walk C. taking; walking D. take; walking 14. We should keep the windows in order to let the fresh air in. A. open B. opened C. close D. closed 15. Many students chances to show themselves in class because the class size is too big. A. don＇t give B. aren＇t given C. haven＇t given D. won＇t give 16. — How much is your coat? — Oh, it me 100 yuan. A. cost B. spend C. paid D. took IV. 根据中文提示完成句子（每空一词）。

17.这个镇每个人都应该为清洁它发挥作用。

Everyone in this town should cleaning it up! 18.因此，我们能齐心协力就能带来变化，创造美好的未来。

So together, our actions can and a better future! 19.为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。

air pollution, we should take the bus or subway driving. 20.我过去能在天空中看到星星。

I able to see stars in the sky. 21.这儿的空气真的已经被污染了，我非常担心。

The air has really around here. I’m very . V. 完形填空 March 22 is World Water Day. It started in 1993. It not only makes us think about the importance of water, but also calls on us to __22__ and protect water. Today, we＇re facing terrible water problems. Among them, the wastewater problem is rather __23__. And the subject of World Water Day in 2017 is “wastewater”． What is wastewater? It is used water. Usually, wastewater comes from homes, __24__， hospitals and so on. It is produced by different kinds of activities，including washing machines, taking showers and using kitchens. The rain also __25__ wastewater when it is running down the street during a storm. No matter where it comes from, this kind of water is sure to have __26__ harmful in it. __27__ must we treat wastewater? Wastewater has a big influence on our lives. It causes both illness for us and pollution for the environment. We must care for our environment and our own __28__．　 How can we treat wastewater? Different kinds of wastewater need different ways of treatment. Wastewater __29__ homes can be reused. Then there will be __30__ wastewater. Also, factory wastewater has to be cleaned __31__ it goes back to nature. (　　)22.A.drink B. save C. carry D. watch (　　)23.A.easy B. popular C. small D. serious (　　)24.A.factories B. lakes C. rivers D. seas (　　)25.A.gets back B. hands in C. changes into D. picks up (　　)26.A.nothing B. something C. nobody D. somebody (　　)27.A.What B. Who C. Why D. How (　　)28.A.work B. interest C. health D. business (　　)29.A.on B. for C. with D. from (　　)30.A.less B. more C. better D. worse (　　)31.A.and B. whether C. after D. before VI． 阅读短文，根据短文内容从短文后的六个选项中能填入空白处的最佳选项。有一个式多余选项。

Global warming is a big problem that we have to stop. One of the best things we do is to plant more trees. Trees can take in CO2 in the air and stop global warming. 32.________ A team of scientists at Boston University has been working with NASA to study the earth＇s green vegetation（植被）. They used a special NASA camera and found that global leaf area had increased by 5 percent since the early 2000s. 33.________ That＇s about one ­quarter of the size of the entire Amazon rainforest. The growth mainly came from China＇s forest protection programs, NASA said. For example, since 1962, China has been planting trees in Saihanba，Hebei Province. It was once a desert. 34.________ 35．________ Ant Forest, a feature in Alipay app, gives users points for doing eco ­friendly things such as walking and going paperless in the office. Users can then use these points to water and grow their own virtual（虚拟的）
trees. When the virtual trees are big enough, Ant Forest will plant real trees somewhere in the world. 36.________ A．More than 55 million trees have been planted in this way. B．The Chinese public has also joined in these activities recently. C．And China was responsible for 25% of that gain, according to the study. D．However, people there can produce vegetables without any difficulty now. E．But now, China has turned the area into the country＇s largest man­made forest. F．According to a news report, China is doing a great job of “greening” the world. Unit13 Section A 1a-2d同步练习参考答案 I． 1.litter 2. bottom 3. fisherman 4. cost/costs 5. plastic II. 6. pollution 7. wooden 8. collect 9. thrown 10. to bring III. 11---16 CCDABA IV. 17. play a part in 18. make a difference lead to 19. To cut down instead of 20. used to be 21. become polluted getting worried V. 22—26　BDACB　27—31　CCDAD V. 32—36　FCEBA