— How long do you think it will be _____ China sends a manned spaceship to the moon? — Perhaps two or three years.

试卷相关题目

• 1The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.

  A.after

  B.before

  C.since

  D.when

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• 2It was evening _____ we reached the little town of Winchester.

  A.that

  B.until

  C.since

  D.before

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• 3一 I'd like to find a part-time job in the restaurant. 一 Good ide

  A.In my opinion, _____it doesn't affect your studies. A.unless

  B.now that

  C.even if

  D.as long as

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• 4Mr. Brown arranged for the taxi to come at six ____ he would not have to wait long at the station.

  A.before

  B.even if

  C.so that

  D.when

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• 5____ we admit that there are still some problems about NMET, we don't mean that it is of no use.

  A.Until

  B.While

  C.As

  D.Unless

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• 6A good storyteller must be able to hold his listeners' curiosity _____ he reaches the end of the story.

  A.when

  B.unless

  C.after

  D.until

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• 7They didn't discover until they happened to enter the back room ______ someone had stolen the priceless painting.

  A.that

  B.what

  C.which

  D.when

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• 8We won't keep winning games _____ we keep playing well.

  A.because

  B.unless

  C.when

  D.while

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• 9_____ he changes his mind, I won't promise to help him.

  A.Unless

  B.If

  C.Though

  D.Since

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• 10To live in honor, _____ he came from a poor family, was his ambition.

  A.though

  B.if

  C.unless

  D.however

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