With modern equipment，many mysteries have ________ to light in recent years.

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• 1Susan wanted to be independent of her parents.She tried ________ alone, but she didn't like it and moved back home.

  A.living

  B.to live

  C.to be living

  D.having lived

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• 2The number of the employees has grown from 1,000 to 1,200.This means it has risen ________ 20 percent.

  A.at

  B.by

  C.to

  D.with

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• 3Emergency 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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• 4 How can Margot ________ from her illness in this room when it is so dirty and dusty？It will only make her worse.

  A.suffer

  B.recover

  C.discover

  D.return

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• 5You're telling me a lie. Your facial expression has ________ you ________.

  A.given；away

  B.given；out

  C.given；off

  D.given；up

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• 6Much of the criticism has focused on the railway's online purchasing system，which has been unable to _________ the huge demand．

  A.take notice of

  B.attach importance to

  C.show preference for

  D.keep pace with

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• 7Eye doctors suggest that a child's first eye exam ________ at the age of six months old.

  A.was

  B.be

  C.were

  D.is

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• 8My mother has always _______ we eat every healthily.

  A.make sure

  B.made sure

  C.be sure

  D.sure

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• 9The further falling of the stock market as reported today has ________ a fresh wave of selling.

  A.given off

  B.set off

  C.put off

  D.got off

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• 10A post office should be built in a central ______ for the sake of the convenience.

  A.position

  B.situation

  C.eruption

  D.connection

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