20. Reading good books for a few hours every day can make a ______to children.

　　　　　　　 A. problem　　　　 B. difference　　　 C. product　　　　 D. harm

19. We should buy things ____ locally.

A. producing 　　　 B. are producing 　 C. are produced　　　 D. produced　　　　

18. It’s impossible ____ a taxi on such a rainy day.

A. for getting 　　 　　B. of get　　　　　　　　 C. to get　　 　　　　　　 D. to getting

17. ____ to the meeting on time tomorrow. It’s very important.

A. Don’t come　　 　　 B. Do come　　　　　 　 C. Not come　 D. Coming

16. Drinking too much ____ your health.

A. do harm to 　　　　　　 　　　　　　　　　　 B. is harm to　　　

C. does harm to　　 　　 　　　　　　　　　 D. do harmful to

15. These are plastic bags. Don’t ____.

A. throw away it　　　　　　　　　　　 　　　 B. throw it away

C. throw away them　　 　　　　　　　　　 　　D. throw them away

14. Do you know how to ____ ice into water?

A. change　　 　　 B. dry　　　　　　 C. make 　　 　　　　　 　D. produce

13. My parents go to work by bike ____ by bus.

A. instead　　 　　 B. instead of　 　　 　　　C. but　　　 　　　　　　 　D. and

12. Do turn off TV after watching _______ that you can use _______ energy.

A. so, less　　 B. so, more　　　 C. because, little　　　 D. because, much

11. Many people prefer clothes made _______ to those made _______.

A. in abroad, in China　　　　　 B. abroad, from China

C. in abroad, China　　　　　　 D. abroad, in China