In the Gulf of Mexico the animals' presence close to shore means their usual habitat is badly polluted, and the crowding could ________ mass die-offs as fish run out of oxygen.

试卷相关题目

• 1You mustn't lose heart; sooner or later your efforts will ________．

  A.pay off

  B.take off

  C.give off

  D.set off

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• 2I've _______ to swim last week. But unfortunately I had a bad cold and therefore couldn't go.

  A.refused

  B.saved

  C.intended

  D.managed

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• 3The man_________the box down and_________down for a rest.

  A.lay; laid

  B.lay; lay

  C.laid; lay

  D.lied; laid

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• 4Emergency line operators must always ________calm and make sure that they get all the information they need to send help.

  A.grow

  B.appear

  C.become

  D.stay

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• 5People _____ much more by their gestures than by their words.

  A.give in

  B.give out

  C.give up

  D.gave away

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• 6She_____ Japanese when she went to Japan for holiday. Now she can speak it freely.

  A.picked up 　　

  B.turned up　　

  C.made up 　　

  D.took up

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• 7Our classmates _________ the losing team of our class and our team won the game at last.  

  A.brought up

  B.cheered up

  C.grew up

  D.turned up

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• 8Hundreds of species are declared to _____ in the coming century.

  A.die away

  B.die out

  C.die down

  D.die off

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• 9Each player tried his best to _________ the game.

  A.beat　　

  B.defeat

  C.catch　　

  D.win

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• 10Ladies and gentlemen, please ______ seated until the plane has come to a complete stop.

  A.remain

  B.keep

  C.go

  D.get

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