A. By doing research. B. By experimenting time after time.

C. By reading different books. D. By working on a specific machine.

15. Without____________, the inventors might not make great contributions.

A. the Industrial Revolution B. the advantages of England

C. the ground work done by scientists D. machines and light bulbs

参考答案：一、CDACD BDCAC DCABC

二、语法与词汇：40%

1. I'm afraid I can't finish the work ___________to help me.

A. unless you will come B. unless you come C. until you will come D. until you shall come

2. We can go when the ground____________.

A. is drying B. has dried C. dried D. dry

3. Come and sit down by the fire. Your hand____________.

A. feel so coldly B. is feeling so cold C. feels so cold D. is felt so cold

4. Various programs____________on TV. World news____________best received.

A. will show, are B. are shown, is C. are showing, is D. have shown, are

5. I can't find my dictionary.I wonder whether Mary____________it now.

A. have B. has C. is having D. had

6. David ____________himself while he ____________the machine.

A. hurted… was fixing B. hurts… is fixing C. hurt …fixed D. hurt … was fixing

7. It ____________ whether he will go on with his study at the university.

A. hasn't been decided B. isn't decided C. hasn't decided D. doesn't decide

8. It ____________years since I last saw you.

A. was B. is C. will be D. has been

9. The room____________often cleaned by the worker.

A. has B. will be C. was D. is

10. Working hours in the United States ____________over the past 20 years.

A. have increased B. increased C. were increasing D. have been increased

11. A number of paintings in the castle are believed____________in a fire.

A. being destroyed B. having been destroyed C. to be destroyed D. to have been destroyed

12. The meeting ____________next week is sure to be a great success.

A. to take place B. to be taken place C. to have taken place D. being taken place

13. There's a man at the reception desk who seems very angry and I think he means____________trouble.

A. making B. to make C. to have made D. having made

14. An army spokesman stressed that all the soldiers had been ordered____________clear warnings before firing any shots.

A. to issue B. being issued C. to have issued D. to be issued

15. I'd rather have a room of my own, however small it is, than ____________ a room with someone else.

A. to share B. to have shared C. share D. sharing

16. No sooner ____________ to bed than he heard a knock at the door.

A. had he gone B. he had gone C. did he go D. he went

17. Seeing the police coming, away ____________ .

A. the thieves ran B. had the thieves run C. ran the thieves D. did the thieves run

18. On the ground ____________ a dead snake.

A. did lie B. did lay C. laid D. lay

19. I didn't see the minister,____________ did I see the secretary.

A. so B. nor C. either D. none