The fifth generation computers, with artificial intelligence, _____ and perfected now.

试卷相关题目

• 1The last half of the nineteenth century _____ the steady improvement in the means of travel.

  A.has witnessed

  B.was witnessed

  C.witnessed

  D.is witnessed

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• 2---You haven't said a word about my new hair-style, Molly. Do you like it? ---I'm sorry I ______ anything about it sooner. I certainly think it's pretty.

  A.wasn't saying

  B.don't say

  C.won't say

  D.didn't say

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• 3Above it _____ a famous painting.

  A.hanged

  B.hung

  C.is hung

  D.hanging

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• 4— We want to sit at the table near the door. —I'm sorry, but it _______ already.

  A.was taken

  B.has taken

  C.will be taken

  D.has been taken

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• 5When you finish your work, don't forget to put the tools back where they ________．

  A.are

  B.will be

  C.were

  D.had been

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• 6---You ought to have educated your son not to have eaten so much junk food, such as fried chicken, roasted mutton, smoked bacon and the like. ---I _______ .

  A.did but he didn't listen

  B.ought to and he wouldn't listen

  C.ought to have; but he didn't listen

  D.should have but he hadn't listened

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• 7Helen said that they ________ for 3 years.

  A.had married

  B.married

  C.had been married

  D.had marriage

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• 8Which of the students_____the examination?

  A.not pass

  B.didn't pass

  C.pass

  D.didn't passed

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• 9Mary is the only one of the girls who ________ in for sports.

  A.go

  B.goes

  C.have gone

  D.have been

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• 10They_____trouble lifting the heavy box.

  A.didn't have many

  B.hadn't a lot of

  C.didn't have much

  D.haven't a great deal of

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