________ some teenagers don't realize is ________ difficult life can be after they get addicted to drugs.

试卷相关题目

• 1We were swimming in the lake _______ suddenly it began to rain heavily.

  A.when

  B.while

  C.until

  D.before

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• 2— Why does the boy keep crying? — It is ______ he has lost his favorite car model.

  A.since

  B.so

  C.when

  D.because

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• 3______is known to us all is that the 2008 Olympic Games will take place in Beijing.

  A.It

  B.As

  C.what

  D.which

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• 4We must get up early tomorrow，______ we'll miss the first bus to the Great Wall．

  A.so

  B.or

  C.but

  D.however

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• 5I'd like a room ______ windows look out over the sea．

  A.whose

  B.which

  C.where

  D.that

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• 6________it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case．

  A.When

  B.While

  C.As

  D.Unless

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• 7He behaved ______ nothing had happened.

  A.even though

  B.because

  C.although

  D.as though

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• 8Please tell me ______ you are getting on with your new classmates.

  A.whether

  B.how

  C.what

  D.where

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• 9You can get the best result ______you carry out the experiment under the desired conditions.

  A.what if

  B.even if

  C.only if

  D.as if

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• 10They showed great interest in everything they saw ______ they visited the farm．

  A.for the first time

  B.at the first time

  C.at first

  D.the first time

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