1. The vacuum cleaner is a valuable labor-saving ______ action.
A. device B. engine C. piece D. instrument
2. The flight was postponed because of technical problems and was finally cancelled last week when a ______ was discovered.
A. accident B. defect C. damage D. defeat
3. When she was crossing the road, she was knocked down by a motor-car and lay ______ by the roadside.
A. asleep B. thoughtless C. unconscious D. unaware
4. The novels he has written have shown his ______ ability as an author.
A. literal B. literally C. literature D. literary
5. The reader is urged to be a leader, rather than a follower; to rely on his own power, rather than to ______.
A. inform B. conform C. deform D. reform
6. He would much ______ it if you could do him the favor.
A. award B. apply C. appreciate D. anticipate
7. If our ______ is correct, then the space-craft should reach the moon on Monday.
A. calculation B. composition C. communication D. vision
8. San Francisco’s Chinese community, comprising 67, 000 ______ is the largest concentration of Chinese outside of Asia.
A. visitors B. workers C. adults D. inhabitants
9. We didn’t catch the train on ______ of the traffic congestion.
A. basis B. charge C. account D. behalf
10. Though he has suffered from cancer for so many years, it is so strange that he has ______ to the present day.
A. deprived B. survived C. derived D. revived
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11. During the races there were two accidents to motor-cyclists including one ______ accident.
A. fatal B. killing C. deadly D. deathly
12. Business picked up in the stores during December, but ______ again after Christmas.
A. dropped out B. dropped on C. dropped over D. dropped off
13. His misbehavior and ______ dismissal from the firm was reported in the newspaper.
A. improper B. inefficient C. subsequent D. frequent
14. Every citizen has the sacred ______ to defend his country.
A. right B. objective C. authority D. obligation
15. We need an umbrella on the beach to give us some ______ at midday.
A. shed B. shade C. shadow D. dark
16. ______ to the Revolutionary War, the United States was an English colony.
A. Prior B. Close C. Earlier D. Next
17. If you are an electrician, you will know the difference between an alternating and a direct ______.
A. conductor B. circuit C. cable D. current
18. The company has the ______ right to print Mr. Dare’s books.
A. virtual B. exclusive C. overall D. flexible
19. Digging the foundation is the first ______ of our building project.
A. solution B. procession C. phase D. achievement
20. The curtains have ______ because of the strong sunlight.
A. faded B. dulled C. fainted D. weakened
参考答案：
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