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21. The vacuum cleaner is a valuable labor-saving ______ action.
A. device B. engine C. piece D. instrument
22. 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
23. 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
24. The novels he has written have shown his ______ ability as an author.
A. literal B. literally C. literature D. literary
25. 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
26. He would much ______ it if you could do him the favor.
A. award B. apply C. appreciate D. anticipate
27. If our ______ is correct, then the space-craft should reach the moon on Monday.
A. calculation B. composition C. communication D. vision
28. 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
29. We didn’t catch the train on ______ of the traffic congestion.
A. basis B. charge C. account D. behalf
30. 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
解析：
21 题：答案为A。device 器械；engine 发动机；piece 碎片；instrument 仪器。
22 题：答案为B。accident 事故；defect 缺陷；damage 破坏；defeat 失败。
23 题：答案为C。asleep 睡着的；thoughtless 缺乏考虑的；unconscious 无知觉的；unaware 不知道的。
24 题：答案为D。literal 文字上的；literally 逐字地；literature 文学；literary 文字上的。
25 题：答案为B。inform 告"；conform 顺从；deform 破坏形象；reform 改革。
26 题：答案为C。award 授予；apply 运用；appreciate 感激；anticipate 期望。
27 题：答案为A。calculation 计算；composition 作文；communication 通讯；vision 视觉。
28 题：答案为D。visitor 访问者；worker 工人；adult 成人；inhabitant 居民。
29 题：答案为C。basis 基础；charge 控告；on account of 由于；on behalf of 代表。
30 题：答案为B。deprive 剥夺；survive 幸存；derive 产生；revive 复活
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发表于 2016-7-11 20:31:37