Although medical science _____ control over several dangerous diseases, what worries us is that some of them are returning.

试卷相关题目

• 1—  ___ you ___ him around the museum yet? —  Yes. We had a great time there.

  A.Have … shown

  B.Do … show

  C.Had … shown

  D.Did … show

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• 2The first use of atomic weapons was in 1945, and their power _____ increased enormously ever since.

  A.is

  B.was

  C.has been

  D.had been

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• 3By the time he realizes the mistake he _____, it will be too late for him to do anything about it.

  A.has made

  B.made

  C.makes

  D.will make

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• 4I _____ the dance performance many times, each giving me a new understanding.

  A.watch

  B.watched

  C.have watched

  D.am watching

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• 5Although the food price _____ a little bit so far, we doubt whether it will remain so.

  A.went down

  B.will go down

  C.was going down

  D.has gone down

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• 6— We _____ to put off our school sports meet until next month. — I _____ that.

  A.have decided; didn't expect

  B.decided; didn't expect

  C.have decided; haven't expected

  D.decide; don't expect

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• 7My brother is an actor. He ______ in several films so far.

  A.appears

  B.appeared

  C.has appeared

  D.is appearing

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• 8For many years, people _____ electric cars. However, making them has been more difficult than predicted.

  A.had dreamed of

  B.have dreamed of

  C.dreamed of

  D.dream of

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• 9The first decade in the 21st century _____ the rapid rise of China as a world economic power.

  A.witness

  B.has witnessed

  C.will witness

  D.have witnessed

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• 10This is the first time we _____ a film in the cinema together as a family.

  A.see

  B.had seen

  C.saw

  D.have seen

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