Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.   

试卷相关题目

• 1Measures have been taken to solve the problem, but it may be some time________the situation improves.

  A.since

  B.when

  C.unless

  D.before

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• 2When I talked about the thing, I felt Jane watching me uncomfortably, looking________she wished to speak.

  A.as though

  B.even though

  C.so that

  D.in case

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• 3There is no doubt at all________she will call us when she gets there.

  A.if

  B.whether

  C.whatD.that

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• 4________ good use you've made of your time to study，there's still room for improvement.

  A.Whatever

  B.However

  C.Though

  D.That

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• 5The new system is better _____ it provides faster access to the Internet.

  A.in that

  B.in which

  C.that

  D.where

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• 6-The mountain village is so beautiful.-Yes.Moreover，________the villagers live，there is fresh air.

  A.that

  B.where

  C.when

  D.whether

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• 7It just isn't fair ________ I am working as a writer, my friends are lying on the beach.

  A.whenever

  B.though

  C.for

  D.while

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• 8_______he will offer us enough help doesn't matter a lot to our success.

  A.If

  B.Whether

  C.Before

  D.How

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• 9I've got one more page to write; ________I've finished.

  A.or

  B.otherwise

  C.then

  D.and

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• 10—May I go outside and play for a while, Mum?    —No, ________ your homework is done.           

  A.as

  B.before

  C.not until

  D.the moment

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