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            • 1． Though Newton was a great scientist，many of his ideas ________ today and are being improved by the work of today’s scientists．（　　）
              A．are to challenge
              B．have challenged
              C．may be challenged
              D．have been challenged
              难度：中等
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            • 2． One Hundred Years of Solitude，a world-famous novel about a seven-generation Colombian family，___ into 37 languages since 1967（　　）
              A．translated
              B．was translated
              C．has translated
              D．has been translated
              难度：中等
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            • 3． _____ the whole night，all the viewers became impatient and fell into a bad mood．（　　）
              A．To have been kept waiting
              B．Having been kept waiting
              C．Kept to be waiting
              D．Kept to have been waiting
              难度：中等
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            • 4． The editor is going to give us a lecture on how to learn English，but the exact time ______ yet．（　　）
              A．has decided
              B．hasn’t been decided
              C．had decided
              D．hadn’t been decided
              难度：中等
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            • 5． Over the past 20years the once-sleepy fishing village ______ into an international tourism destination，with many visitors coming to explore its spectacular rainforests and beaches．（　　）
              A．was transformed
              B．was transferred
              C．has been transformed
              D．has been transferred
              难度：中等
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            • 6．
              A big step _____ to strengthen China's health care systems since we launched an effort in 2008.

              A. has been taken
              B. is being taken
              C. was taken
              D. had been taken
              难度：中等
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            • 7．
              Members do not need to repeat the information which _____ before.

              A. has submitted
              B. had been submitted
              C. has been submitted
              D. submitted
              难度：中等
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            • 8．
              — Peter, would you like a beer to go with your meal?
              — Sure, it _____.

              A. ordered
              B. was ordered
              C. has been ordered
              D. has ordered
              难度：中等
              解析 收藏 试题篮
            • 9．
              — Can you tell me what time the flight to Detroit leaves?
              — I'm sorry, but it ____ due to the fog.

              A. has been canceled
              B. had been canceled
              C. has canceled
              D. had canceled
              难度：较易
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            • 10．
              Two thirds of the subway construction ____ so far and people will enjoy a fast and convenient trip under the city early next year.

              A. have been completed
              B. is being completed
              C. has been completed
              D. will be completed
              难度：中等
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