Our professor told us that salt water _____ at a lower temperature than fresh water.

试卷相关题目

• 1Writing has _____ much of my spare time, but it has given me a great deal of pleasure.

  A.taken off

  B.taken down

  C.taken away

  D.taken up

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• 2While ____ in tea with that dealer, Mr. Smith had himself ____.

  A.trading; ripped off

  B.buying; ripping off

  C.selling; ripped off

  D.purchasing; rip off

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• 3China has been working very hard to stop the endangered animals ______ .

  A.dying out

  B.dying away

  C.dying down

  D.dying hard

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• 4Emergency line operators(接线员) must always _____ calm and make sure that they can get all the information they need to send help.

  A.grow

  B.remain

  C.appear

  D.look

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• 5Whatever he explained, he couldn't ____ the policeman that he was innocent．

  A.confirm

  B.present

  C.convince

  D.admit

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