Though great progress has been made in astronomy in the past fifty years, ______ still much that remains mysterious to astronomers _______ the universe, even the solar system.

试卷相关题目

• 1Nothing that you say can change his mind, ________？

  A.do you

  B.don't you

  C.can it

  D.can't it

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• 2She thinks the naughty students have escaped being punished by their teacher, __________?

  A.does she

  B.doesn't she

  C.have they

  D.haven't they

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• 3I told you the other day that Tom had agreed with your idea, ____________?

  A.hadn't he

  B.didn't he

  C.did I

  D.didn't I

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• 4------ I don't think he is fit for the job, ______? ------Why do you think so ?

  A.do I

  B.don't I

  C.is he

  D.isn't he

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• 5Your sister must be helping the little girl with her homework, _______ ?

  A.needn't she

  B.mustn't she

  C.isn't she

  D.must she

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• 6— Peter, you feed the gold fish and the two little tortoises, ______?　 — I did it in the morning; it's a routine for me now．

  A.didn't you

  B.can you

  C.don't you

  D.will you

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• 7—I don't imagine Russ and his poor dog had a good time on 　the deserted island，________？ —I have no ide

  A.A.didn't they

  B.do you

  C.did they

  D.hadn't they

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• 8Many people in China have never dreamed of ________ a chance for them to learn to driveafter their retirement.   

  A.being

  B.there

  C.there to be

  D.there being

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• 9 _____ is no doubt ________ 100 years ago animal testing was cruel.

  A.It; whether

  B.It; that

  C.There; whether

  D.There; that

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• 10—I don't think we have met before，________？ —Yes，once at a party，but we weren't introduced.

  A.do I

  B.have we

  C.don't I

  D.haven't you

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