Lawrence Craven, a doctor from the USA，is the author of several published reports, one of______ introduced the idea in 1953 ______aspirin could reduce the risk of heart attacks．

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• 1—It's reported that the new underground line has been completed． —Yes but it hasn't been made clear _____it's to be opened to traffic．

  A.that

  B.who

  C.what

  D.when

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• 2It looks ______ you are ill. You should go to see the doctor.

  A.as

  B.as though

  C.as well

  D.even though

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• 3_____ I'm willing to help, I do not have much time available．

  A.While

  B.When

  C.Once

  D.Since

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• 4--- Why didn't you tell him about the meeting ? --- He rushed out of the room ________ I could say a word .

  A.before

  B.until

  C.when

  D.after

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• 5The mere fact _____ most people believe nuclear war would be madness doesn't mean that it will not occur.

  A.what

  B.which

  C.that

  D.why

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• 6He thinks I have spoken ill of him, ____ I'm always speaking well of him.

  A.when

  B.and

  C.while

  D.on the contrary

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• 7Lucy is going to have difficulty finding a good job _______ she graduates from a key university.

  A.as if

  B.even if

  C.so that

  D.as usual

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• 8Kate was very fond of speaking French, ______ indeed she spoke well.

  A.that

  B.which

  C.and

  D./

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• 9Always read the label ______ you wash your clothes．

  A.before

  B.unless

  C.since

  D.until

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• 10Wow! Look at the man and his horse ________are running down the road.

  A.which

  B.that

  C.who

  D.where

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