The number of private cars in urban areas should be limited ___________the number of public buses should be increased.

试卷相关题目

• 1Disappointed, I was about to leave ________ something occurred, which ________ my attention.

  A.while, paid

  B.and, got

  C.before, drew

  D.when, attracted

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• 2________ you've got a chance, you should make full use of it.

  A.Now that

  B.Even if

  C.Although

  D.As soon as

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• 3—Look, the paint is starting to come off ____ the wall is damp. —Well, we'd better have the wall repainted some day.

  A.when

  B.where

  C.if

  D.once

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• 4_____H7N9 is a deadly virus, it is still safe to eat thoroughly-cooked chicken.

  A.Until

  B.While

  C.If

  D.Since

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• 5Air pollution is getting more and more serious, so we must take action ________ it is too late.

  A.before

  B.after

  C.until

  D.when

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