高考英语名词练习49

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• 111In public places, we can often see ______ that tell us useful things, such as no parking, no smoking, etc.

  A.symptoms

  B.signs

  C.systems

  D.signals

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• 112Many scientists have believed that there may be a _________of life on the Mar．

  A.mark

  B.signal

  C.sigh

  D.sign

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• 113My neighbor is very kind. I'll never forget the ______ she's done for me.

  A.actions

  B.favors

  C.deeds

  D.Help

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• 114Bear in _____ that tomorrow is our dear mother's birthday．

  A.mind

  B.head

  C.memory

  D.heart

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