This is an illness that can result in total blindness _____ left untreated.

试卷相关题目

• 1John plays basketball well, _____ his favorite sport is badminton.

  A.so

  B.or

  C.yet

  D.for

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• 2Nancy enjoyed herself so much _____ she visited her friends in Sydney last year.

  A.that

  B.which

  C.when

  D.where

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• 3He cannot say he has fully understood Chinese, ____ he has been to China for many times.

  A.ever since

  B.now that

  C.even though

  D.only if

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• 4Hardly _____ to the airport _____ he was surrounded by many journalists and fans.

  A.the famous singer had got; when

  B.the famous singer got; then

  C.had the famous singer got; when

  D.did the famous singer get; then

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• 5Parents should take seriously their children's requests for sunglasses _____ eye protection is necessary in sunny weather.

  A.because

  B.though

  C.unless

  D.if

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• 6Many of them turned a deaf ear to his advice, _____ they knew it to be valuable.

  A.as if

  B.now that

  C.even though

  D.so that

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• 7Don't be afraid of asking for help _____ it is needed.

  A.unless

  B.since

  C.although

  D.when

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• 8_____ modeling business is by no means easy to get into, the good model will always be in demand.

  A.While

  B.Since

  C.As

  D.If

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• 9____ I really don't like art, I find his work impressive.

  A.As

  B.Since

  C.If

  D.While

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