Scientific experiments ______ by students without the teachers' instructions can be dangerous.

试卷相关题目

• 1The belief that the children of working mothers usually suffer is _______by most scientists.

  A.rejected

  B.refused

  C.resisted

  D.reduced

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• 2Mary realized she ______.

  A.was playing a joke about

  B.was making fun

  C.was being made fun of

  D.was made fun

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• 3If you _____ the meeting place in greater detail, I _____ so much time looking for it.

  A.described; wouldn't waste

  B.had described; wouldn't have wasted

  C.would have described; had wasted

  D.described; wasted

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• 4—What's that terrible noise? —The neighbors ______ for a party.

  A.have prepared

  B.are preparing

  C.prepare

  D.will prepare

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• 5We_______on this project for four hours. Let's have a rest.

  A.are working

  B.have been working

  C.worked

  D.had worked

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• 6Traditional folk arts of Tianjin like paper cutting_______at the culture show of the 2010 Shanghai World Expo.

  A.are exhibiting

  B.is exhibiting

  C.are being exhibited

  D.is being exhibited

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• 7— Can you answer my question? --Sorry, I__________ . Would you repeat that question?

  A.hadn't listened

  B.haven't listened

  C.don't listen

  D.wasn't listening

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