1. 太多的噪音不仅打扰了其他人而且对人们的听力也造成了巨大的伤害。

2. 看，有几家化工厂正往小溪里排放废水。

3. 树木能够防止风把土刮走。

4. 人类已经意识到保护环境的重要性。

5. 风在许多地方被用来发电。

6. 人们在处理垃圾方面有困难。 7. 砍伐树木对人类的影响很大。 8. 每个人都有义务做一些有用的事情来阻止人们乱扔垃圾。

Unit 2 词汇训练

1.我想阻止她抓那个球，但是她没有听到。

I want to _____ her _____ _____ the ball, but she didn’t hear me.

2.打电脑游戏不但耗费时间，而且有害健康。

Playing computer games not only takes much time but also is _____ _____ _____.

3.我想要茶而不是咖啡。I would like tea _____ _____coffee.

4.我叔叔离开家乡已有好几年了。

My uncle _____ _____ _____ _____ his hometown for quite a few years.

5.你知道印度人口比美国的还多吗？

Do you know that the population of India is _____ than _____ of America?

6. 当你离开教室的时候, 应该随手关灯。

You _____ _____ turn off the lights when you leave the classroom.

7.Many poor people live in the houses without __________ (用电的) light.

8.These tin bottles were collected for _____ (recycle).

9. Your books _________(占据）most space of the desk.

(die) for three years.