________we went to visit Professor Smith, he________his research work.

试卷相关题目

• 1_______ the whole society care for children as well as their parents, children can grow healthily and happily.

  A.As soon as

  B.Once　　　

  C.The moment　　

  D.So long as

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• 2It's said that an American often starts a speech with a joke, _______ a Japanese seldom does.

  A.as

  B.when

  C.while

  D.though

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• 3—Are you ready for Spain? —Yes, I want the girls to experience that ______ they're young.

  A.before

  B.until

  C.while

  D.since

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• 4He is quite strange, for everything he does is opposite to ______ is considered normal behavior.

  A.whether

  B.that

  C.what

  D.which

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• 5The income of skilled workers went up. ________, unskilled workers saw their earnings fall.

  A.Moreover

  B.Therefore

  C.Meanwhile

  D.Otherwise

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• 6_______ he has made a decision, it is not easy for you to make him change his mind.

  A.Though

  B.Unless

  C.Once

  D.Until

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• 7He said it would be at least three more months ________ he could recover and return to school.

  A.when

  B.before

  C.since

  D.after

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• 8The Great Wall is ______ tourist attraction that millions of people pour in every year.

  A.so a well-known

  B.a so well-known

  C.such well-known a

  D.such a well-known

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• 9_____ these experiments were successfully completed would we think of going into humans.

  A.If only

  B.So that

  C.Only if

  D.Even if

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• 10--- Can you tell me how to improve my English? --- Do more speaking, I think , ________you will be good at spoken English.

  A.or

  B.for

  C.and

  D.until

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