When did NASA start working on a successor to the shuttle、

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• 1The design of the orbiter indicates

  A.NASA's determination to continue space exploration．

  B.NASA's disadvantage in space technology．

  C.the great pressure from Congress on NASA．

  D.a heavy defeat for NASA．

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• 2Besides its main mission．the orbiter would also be used as

  A.a medical research center．

  B.a space station．

  C.a space ambulance．

  D.a passenger plan

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• 3NASA plans to design the new space craft to

  A.control the International Space Station．

  B.carry astronauts to the International Space Station．

  C.transport equipment to the International Space Station

  D.train astronauts in space flights．

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• 4Nightingale played a great role in

  A.the building of war hospitals．

  B.the education of Women．

  C.the development of nursing．

  D.the improvement of working conditions for women．

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• 5On the battle fields Nightingale and her nurses proved to be

  A.as bad as the doctors had expected．

  B.quite generous．

  C.less than useful．

  D.very helpful．

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• 6According to the passage，the 1 billion funds，if granted，would

  A.be used to rebuild the International Space Station．

  B.be awarded to the scientists working at NASA．

  C.be shared by the two projects under the Space Launch Initiative

  D.be spent on the investigation of the Columbia disaster．

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