I took mathematics and physics because I think that _______very important for me to make furtherresearch in this field.    

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• 1After ______ absence, he found his wife much changed.   

  A.a year’s or two’s

  B.a year of two

  C.a year or two’s

  D.one of two year’s

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• 2The police (family, team)_______ out in search of the missing boy.   

  A.goes

  B.has gone

  C.is

  D.are

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• 3No one in the department but Tom and I ____ that the director is going to resign.

  A.knows

  B.know

  C.have known

  D.am to know

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• 4The number of people invited _________fifty, but a number of them _________absent for different reasons.     

  A.were ; was

  B.was ; was

  C.was; were

  D.were ; were

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• 5One and a half hours ____ all I can spare now.   

  A.is

  B.are

  C.was

  D.were

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• 6Gone are the days when China, a major economic power in Asia today, ________ at the mercy of others.

  A.was

  B.is

  C.had been

  D.were

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• 7In this university a medal with ten thousand dollars ____ gains success in science and technology every two years.

  A.is given to whoever

  B.are given to anyone who

  C.gives to whomever

  D.give to everyone

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• 8A large number of students in our school ______ from the countryside, the number ____ growing these years.

  A.is, has been

  B.are; has been

  C.is, have been

  D.are, have been

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• 9A new study has found no evidence that the sunscreen, commonly used to reduce the risk of skin cancer,actually____ the risk.

  A.increase

  B.increasing

  C.increases

  D.having increased

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• 10The article suggests that when a person _____ under unusual stress he should be especially  careful to have a well-balanced diet.

  A.is

  B.be

  C.were

  D.was

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