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2021年英语四级语法模拟练习(3)

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点击查看》》2021年英语四级语法模拟练习汇总

  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

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