In the last ten years, they _______ three great scientific experiments.

试卷相关题目

• 1The population of the city ________from less than half a million in 1949 to over two million.

  A.have increased

  B.has increased

  C.have improved

  D.has improved

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• 2He _____in London for many years, but he has never regretted his final decision to move back to Chin

  A.A.lived

  B.was living

  C.have lived

  D.had lived

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• 3The voice on the phone was exactly as she_______ it would sound，just like her mother's．

  A.dreamed

  B.had dreamed

  C.would dream

  D.was dreamed

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• 4These days, we _____ for our final exams.

  A.are prepared

  B.have prepared

  C.are preparing

  D.will prepare

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• 5He said he ____ an American before.

  A.has never met

  B.had never met

  C.would never meet

  D.was never met

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• 6I am 17 years old now. I wish my parents wouldn't treat me as if I _______ a child.

  A.was

  B.have been

  C.am

  D.were

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• 7All that can be said ______.

  A.has been said

  B.have been said

  C.is said

  D.are to be said

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• 8It is recommended that the project ________ until all the preparations have been made

  A.is not started

  B.will not be started

  C.not be started

  D.is not to be started

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• 9John _______ for London this afternoon and his flight _______ off at 18:20.

  A.is about to leave; will take

  B.is leaving; takes

  C.is going to leave; is taking

  D.is to leave; is about to take

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• 10.I remember putting the tape recorder in the corner, but what _______ it?

  A.has happened on

  B.has become of

  C.has happened

  D.has taken

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