In the global economy, a new drug for cancer, _________ it is discovered, will create many economic possibilities around the world.  

试卷相关题目

• 1We can't complain that children are cheating in examinations ______ adults themselves have set such a bad role model for them to follow.

  A.because

  B.unless

  C.when

  D.though

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• 2It's hard to imagine_________ it would be like living on Mars.

  A.that

  B.how

  C.where

  D.what

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• 3.Everyone in the village is very friendly. It doesn't matter _______ you have lived there for a short or a long time.

  A.why

  B.how

  C.whether

  D.When

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• 4________I have to give a speech，I get extremely nervous before I start.

  A.Whatever

  B.Whenever

  C.Whoever

  D.However

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• 5Many young people don't work hard, and regret it later when the opportunity is gone.They only realize it________it is too late.

  A.when　

  B.before

  C.in case　

  D.until

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• 6I'm sorry you've been waiting so long，but it'll still be some time ________ Brian gets back.

  A.before

  B.since

  C.till

  D.after

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• 7I'm terribly sorry to have kept you waiting so long, but it'll still be some time _________ Tony gets back.

  A.after

  B.since

  C.till

  D.before

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• 8－Sir，may I borrow some new books? －Sorry，you can't________you haven't turn back those you borrowed one month ago.

  A.unless

  B.before

  C.because

  D.until

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• 9Tourism, _______ it brings in money to a country, can also result in damage to the World  Heritage sites there.          

  A.once

  B.while

  C.if

  D.as

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• 10To be successful,  you need to remember that ________ you might be very busy,  you need to be energetic and enthusiastic.

  A.as though

  B.in case

  C.even if

  D.now that

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