第二次作业与答案.doc

第一组： 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 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. Everry citizen has the sacred ______ to defend his country. A. right B. objective C. authority D. obligation 15. We need an umbrel