Unit 13 We're trying to save the earth!
第四课时 Section B(1a-1e)
【基础训练】
一、根据句意，用括号中所给单词的适当形式填空。
1. These endangered animals may (appear)one day if we don't protect them.
2.I am very tired now. Let's stop (run)and have a rest.
3. (recycle)waste paper is very easy.4.Mr. Wang rides a bike to work instead of (drive)his car now.
5. While you (wash)your hair, you'd better turn off the shower.
【能力提升】
二、任务型阅读。
Air pollution is known as a serious threat(威胁) to humans. 6. .Just like humans can fall ill easily in smoky areas, plants can also get sick if there are lots of pollutants in the air.7. .It can also prevent plants from looking as beautiful as they should. 8. . So if you don't want to plant plants that may resist（抵挡）air pollution and decide to plant your favorite plants anyway, you will have to plant them indoors.
9. Places where plants once grew well, like areas of the southern California, are no longer good places for farming now. Farmers have been complaining about this for so long that the government has asked some scientists to study this.10. .If you live in such an area, you can search the Internet for the names of the plants.
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使文章意思通顺、内容完整。
A. Air pollution has become a serious problem not only for those who plant flowers, but also for farmers.
B. But do you know it is also harmful to plants
C. They have found what kinds of plants cannot be grown in areas with air pollution.
D. What's worse, there is very little that we can do to protect outdoor plants from air pollution.
E.Polluted air can stop plants from growing well.
三、根据对话情景，在空白处填入一个适当的句子，使对话意思连贯、完整。
A: Hi, Li Ming. Did you watch the program of CCTV-1 last night
B: No, I didn't.11.
A: It was about environmental protection. I like it very much.
B:12.
A: Well, we should save water in our daily life.
B: 13.
A: We'd better not use plastic bags, either.
B: Good idea! The natural environment is badly polluted with plastic bags.
A: Right. We can also save paper. Making paper needs many trees.
B: I see. Thank you for telling me so much.
A: 14. .Would you like to join me to protect the environment
B: 15. .I think we should try our best to protect the environment.
参考答案
一、1.disappear 2. running 3. Recycling 4.driving 5.are washing
二、6~10.BEDAC
三、11. What was it about
12. What should we do to protect the environment
13. What else
14. You are welcome
15. Yes, I'd love to
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