() 5. — Don’t you think there’s life on Mars? —

   A. Yes,I agree. B. Yes,of course not.

   C. Yes,I don't think so. D. What’s wrong?

() 4. — When will the railway that connects the two cities open?

—next year. Only twothirds been built.

   A. Until;has   B. Until;have   C. Not until;has   D. Not until;have

() 3. — Life on Mars will be better than life on the Earth many ways.

   A. on;to   B. in;of   C. at;of   D. for;to

() 2. —do we need to move to Mars?

—The Earth is crowded and polluted.

   A. How   B. Why   C. What   D. Where

() 1. Sixty percent of the teachers now living around Xinjiekou.

   A. is   B. are   C. has   D. have

5. There are a large number of books in our school library,but only a small (百分数) are foreign books.

4. Can you tell me about the (缺点) of living in big cities?

3. While the girl was shopping,the (外星人)got out from a UFO.

2. He saved my life at the (风险) of his own.

1. It’s dangerous to give a (a person that you don't know) a lift.