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.
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