1. Spaceships can protect astronauts and __________________ (为他们提供氧气)。

2. Groups of scientists have been sent into the space station ________________________(从事各种科学研究)。

3. He has studied in an aviation school for four years and now his _____________________(当宇航员的梦想快要实现了)。

4. Next year China _______________________(发射更多的卫星到太空) for some foreign countries.

5. This equipment is used to ______________________(接收无线电信号) sent back from the spaceships.

四、单项选择（共15分，每题2分）

1. The scientists have sent up a balloon _________ scientific equipment was fixed into the sky.

A. where B. which C. to which D. in which

2. I would ___________ have the red blouse _________ the green one.

A. rather; than B. like; than C. prefer; than D. prefer; to

3. ________ I know, there are four basic types of blood altogether.

A. As soon as B. As long as C. So far as D. On condition that

4. Signals sent up from the earth _____________ the satellite, and then returned to the earth.

A. hit B. beat C. set for D. knocked

5. I went to the museum, __________ I visited an art show.

A. that B. which C. in which D. when

6. ------Where will the football matches take place?

------They are ___________ to take place in Shanghai.

A. possible B. probable C. likely D. unlike

7. The problem_________ developing education is that a lot of money will be needed.

A. for B. with C. of D. about

8. Rising costs made it hard to ________ the business.

A. carry out B. carry through C. carry on D. carry away

9. __________, the population of China is the largest in the world.

A. It is well known that B. As is well known

C. Which is well known D. We all know

10. He traveled from place to place, looking ________ matters of all kinds.

A. for B. up C. into D. like

11. We talked about the school and teachers ________ were remembered by every one of us.

A. that B. energy C. what D. him

12. She won't be able to come next week, because she ____ herself in Mount Tai then.

A. enjoys B. will be enjoying C. is enjoying D. will have enjoying

13. The Parkers bought a new house but ____ will need a lot of work before they can move in.

A. they B. it C. one D. which

14. So far, he____ as many as 1 000 stamps of the USA.

A. has collected B. has been collecting C. collected D. had collected

15. The Internet _________ us ________ all kinds of information very quickly and conveniently.

A. provides...for B. supply....with C. offer... to D. provides...with