______ scientists know where a storm will happen, winds will suddenly change, carrying the storm to a new direction.

试卷相关题目

• 1When I was a kid, my mother told me if I could not be a good loser, _____ there's no way I could be a good winner.

  A.and

  B.so

  C.or

  D.then

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• 2 The world economy has improved _____ since the end of last year, but major problems and challenges are not fully solved.

  A.somehow

  B.somewhat

  C.anyhow

  D.meanwhile

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• 3_______ there is a snowstorm or some other bad weather, the mail always comes on time.

  A.Because

  B.Unless

  C.As

  D.So

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• 4________ many changes have _______, we should keep pace with the changes too.

  A.Since; taken the place

  B.Because; taken place

  C.Now that; taken place

  D.As; been taken place

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• 5Not that I'm unwilling to lend you a hand,______ I'm too busy for the moment.

  A.because

  B.but that

  C.but

  D.however

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• 6This depends upon ______ he is interested in doing this kind of work.

  A.if

  B.whether

  C.that

  D.what

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• 7Was it at the end of the exploration ______ you discovered the evidence ______ the monsters used to exist in the lake?

  A.which；which

  B.that；that

  C.where；that

  D.that；which

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• 8It was said ____that was _____ he succeeded in running his business.

  A.that, what

  B.that, that

  C.what, how

  D.that, how

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• 9I was about to leave the office ______ an unexpected visitors came.

  A.while

  B.as

  C.when

  D.before

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• 10______ you think you can or not, you must finish the project before Friday.

  A.If

  B.Unless

  C.Though

  D.Whether

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