______ is often the case in science, there is no simple answer

试卷相关题目

• 1Please don't call me at the office ________ it's really necessary．

  A.if

  B.unless

  C.otherwise

  D.except

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• 2It was three years_______ he came back.

  A.that

  B.since

  C.before

  D.when

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• 3That's ________ you are wrong． You skipped Step Two .

  A.where

  B.how

  C.what

  D.when

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• 4—Have you got any idea for the summer vacation? —I don't mind where we go______there's sun, sea and beach.

  A.as long as

  B.as if

  C.now that

  D.in order that

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• 5People in Shanxi are proud of ________ they have achieved in the past ten years.

  A.what

  B.which

  C.that

  D.how

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• 6The notice says _________ you are, you must show your tickets to enter the exhibition.

  A.whoever

  B.who

  C.however

  D.Whom

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• 7Steps must be taken _________ this kind of disaster will never happen again.

  A.so that

  B.even if

  C.because

  D.as

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• 8At the beginning of a speech, it is very important to grab the audience's attention and make them interested in ____ you have to say．

  A.what

  B.which

  C.that

  D.who

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• 9But when I got ____ the town ought to have been, all I found was a gas station.

  A.what

  B.which

  C.where

  D.that

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• 10You had better book rooms at the hotel in advance _____ you should find no room on your arrival.

  A.so that

  B.even if

  C.in case

  D.now that

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