Because it hardens soft metals such as tin and lead , _______ in alloys .

试卷相关题目

• 1He caught a bad cold ________ the heavy rain.

  A.as a result

  B.as the result of

  C.as the result

  D.as a result of

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• 2The electricity bill is ________ every month.

  A.due to be paid

  B.due to pay

  C.due paying

  D.due being paid

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• 3They said the problem was in the engine, ________ was just what I ________.

  A.that; had inspected

  B.which; had hoped

  C.which; had suspected

  D.that; had suspected

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• 4Who left the door ________?

  A.open

  B.opened

  C.opening

  D.to open

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• 5Teachers like ________ students.

  A.gift

  B.gifted

  C.care

  D.careless

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• 6He left home twenty years ago, ________.

  A.never coming back

  B.was never seen

  C.never to return

  D.never get back

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• 7He never speaks to others unless ________.

  A.speaking

  B.speaking to

  C.spoken

  D.spoken to

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• 8She ________ an award for the invention.

  A.raise

  B.have

  C.fetched

  D.won

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• 9When Xiao Ming was ill in hospital, his friends went to see him ________.

  A.every a few days

  B.everyday

  C.every two days

  D.every the day

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• 10The scientists did all they _______ make the experiment a Success.

  A.could

  B.can

  C.could to

  D.can to

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