13.___ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.

A. When　　　 B. While　　　 C. As　　　　 D. As if

12.As a result of the serious flood, two-thirds of the buildings in the area ___ .

A. needs repairing　　　　　　　　　　　　 　 B. needs to repair

C. need repairing　　　　　　　　　　　　　 　 D. need to repair

11.High-speed trains travel at 300 kilometres an hour, which is about ___ normal trains.

A. four times the speed of　　　　 B. the speed four times of　

C. four times as the speed of　　　 D. four times the speed as

10.I don’t doubt ___ our country will play a more and more important role in the world affairs.

A. that　　　　 B. if　　　 C. whether　　 D. how

9. I just wonder 　　　　that makes him so excited.

A. why it does 　　　　　　　　 B. what it does

C. how it is　　　　　　　　　　　　 D. what it is

8.This kind of material ___ , so be careful when you wear it.

A. is torn easily　　 B. is torn easy　　 C. tears easily　 D. tears easy

7. ___ to reach them on the phone, we sent an email instead.

A. Fail　　　 B. Having failed　　 C. To fail　　　 D. Failed

6.During the three years of school life, our class ___ to be a good team group.

A. was proved　　 B. is proving　　 C. has been proved　　 D. proved

5.The students are used to taking part in the ___ run every morning in our school.

A. 800 metres length　　　　　　　 B.800-metres-long　

C.800 metre length　　　　　　　　　　　 D. 800-metre-long

4. 　　　　　is important in people’s daily life.

A. Water　　　　　　　　　　　　　　　　　 B. The water

C. Waters　　　　　　　　　　　　　　　　 D. A kind of water