单元考 Unit2 Topics 2~3答案

听力： 1-5 CAEBD 6-10 AAABB 11-15CCBCC

16. dirty 17. dead 18. wide 19. fresh 20. bad

单项选择：

1-5 BCDCA 6-10 DADAA 11-15 BBAAB

完形填空。

1-5 BBCAC 6-10 ADBBB

阅读理解。

1-5 TFFFT 6-10 DDBDD

IV.词汇

1.behavior

2. nodded

3. towels

4. steel

5. electric

6. burning

7. technology

V.句型转换。

1.traveled a short distance

2. Though / Although it was raining heavily outside, the farmer was still working in the fields.

It was raining heavily outside, but the farmer was still working in the fields.

3. Not everyone

4. will it

5. use, putting

6. Either/Each side; use, again

VI.根据汉语提示完成句子。

1.caring for

2. refer to

3. come to realize

4. dying out

5. Easier said than done

6. day by day

7. In the beginning

VII. 情景交际。1.Would you like to know how to protect the e

nvironment?

2. you’d better ride a bike.

3. take a cloth bag when you go shopping

4.It’s my pleasure. Not at all. You’re welcome.

VIII.综合短文填空。1.without 2. breathe 3. result 4. noise 5. h

omeless 6. crowded 7. solve 8. Luckily

9. improve 10. laws

IX. 看图写话。1.Forests have already changed into desert.

2.Trees can prevent the water from washing the earth away.

3.She is /We are /You are not supposed to throw litter around.

4.Ought we use soft drink cans only once?

…People cut down too many trees. As a result, sand storms come into being and a lot of rich land has changed into desert. Farmers use chemicals too much so that it causes soil pollution. And this kind of pollution does great harm to people’s health. Besides, there are many chemicals factories pouring waste water into the rivers. The water becomes dirty. Water pollution makes the rivers dead.

How should we deal with these problems? Here are some suggestions:

First, plant more trees instead of cutting them down freely. Second, the government

should ask farmers to use fewer chemicals. Third, don’t throw litter around. The factories should deal with the waste water before pouring it into the rivers.

In a word, we only have one earth. It’s our home. It’s our duty to protect our home.