______ many times, but he still couldn't understand it.

试卷相关题目

• 1— Can I  enter the laboratory,sir?— Under no circumstances________to enter it without approval.

  A.is anyone allowed

  B.anyone is allowed

  C.nobody is allowed

  D.is nobody allowed

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• 2— Gorge and Lucy got married last week. Did you go to their wedding?— No, I ______. Did they have a big wedding?

  A.was not invited

  B.hadn't been invited

  C.have not been invited

  D.didn't invite

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• 3— Can I smoke here?  — No, _____ at no time in the library.

  A.smoking permits

  B.smoking does permit

  C.smoking is permitted

  D.is smoking permitted

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• 4In a leap year, the extra day _____ the second month, giving it 29 instead of the usual 28 days.

  A.adds up

  B.is added to

  C.is added up to

  D.adds to

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• 5A computer can think logically and work millions and millions of times faster than a human but it _____ never replace humans because it has to ________ to work.

  A.may; be programmed

  B.can; program

  C.should; program

  D.can; be programmed

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• 6In some parts of the world, tea ____ with milk and sugar.    

  A.is serving

  B.is served

  C.serves

  D.served

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• 7It is said that some software on learning subjects for pupils _______ in a very practical way.

  A.designed

  B.is designed

  C.designs

  D.is designing

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• 8The class ________seven groups, each having eight students.

  A.divides into

  B.is divided into

  C.separates from

  D.is separated from

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• 9A series of stimulus policies and supportive measures taken by the government ________ to promote change in the economic environment in this are

  A.A.is expected

  B.are expected

  C.is expecting

  D.are expecting

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• 10Knowing how well he________ his future career,I feel confident that he will make a success.      

  A.is preparing for

  B.is prepared for

  C.prepares

  D.prepares for

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