Scientists say it will be five or six years _______ it is possible to test this medicine on humans.

试卷相关题目

• 1There is hard evidence ________ George has something to do with the murder.

  A.which

  B.what

  C.why

  D.that

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• 2___________you try to do something beyond what you have already mastered, you will never grow.

  A.Since

  B.When

  C.Though

  D.Unless

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• 3________ Mr. Smith was the last man I wanted to see, I did all in my power to help him.

  A.Because

  B.Now that

  C.While

  D.As

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• 4We became good friends quickly, ______our life experiences couldn't have been more different.

  A.as long as

  B.even though

  C.in case

  D.as though

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• 5Most of the roads were covered with thick snow, ____ made our journey more difficult．

  A.one

  B.it

  C.which

  D.that

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• 6It took me quite a long time to develop a voice, and _______ I have it, I am not going to be silent.

  A.now that

  B.unless

  C.so that

  D.although

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• 7All of a sudden it came to me ________ I might help wash my mom's feet on Thanksgiving Day.

  A.if

  B.when

  C.which

  D.that

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• 8A bit more effort, I think, ______ the problem could be settled.

  A.and

  B.so

  C.or

  D.but

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• 9you can borrow my car _____ you promise not to drive too fast.

  A.unless

  B.even if

  C.in case

  D.as long as

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• 10I thought her nice and honest _____ I met her.

  A.first time

  B.for the first time

  C.the first time

  D.by the first time

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