英语四级词汇语法练习题 第005组

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单项选择题（下列每小题备选答案中，只有一个符合题意的正确答案。每小题0分，共20题。）
1. The vacuum cleaner is a valuable labor-saving ______ action.
A ：device
B ：engine
C ：piece
D ：instrument
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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
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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
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4. The novels he has written have shown his ______ ability as an author.
A ：literal
B ：literally
C ：literature
D ：literary
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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
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6. He would much ______ it if you could do him the favor. 
A ：award
B ：apply
C ：appreciate
D ：anticipate
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7. If our ______ is correct, then the space-craft should reach the moon on Monday.
A ：calculation
B ：composition
C ：communication
D ：vision
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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
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9. We didn’t catch the train on ______ of the traffic congestion.
A ：basis
B ：charge
C ：account
D ：behalf
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10. Though he has suffered from cancer for so many years, it is so strange that he has ______ to the present day.
A ：derived
B ：survived
C ：revived
D ：deprived
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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
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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
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13. His misbehavior and ______ dismissal from the firm was reported in the newspaper.
A ：improper
B ：inefficient
C ：subsequent
D ：frequent
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14. Every citizen has the sacred ______ to defend his country.
A ：right
B ：objective
C ：authority
D ：obligation
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15. We need an umbrella on the beach to give us some ______ at midday. 
A ：shed
B ：shade
C ：shadow
D ：dark
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16. ______ to the Revolutionary War, the United States was an English colony.
A ：Prior
B ：Close
C ：Earlier
D ：Next
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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
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18. The company has the ______ right to print Mr. Dare’s books.
A ：virtual
B ：exclusive
C ：overall
D ：flexible
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19. Digging the foundation is the first ______ of our building project.
A ：solution
B ：procession
C ：phase
D ：achievement
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20. The curtains have ______ because of the strong sunlight.
A ：faded
B ：dulled
C ：fainted
D ：weakened
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