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A flight to other solar systems will be made more possible by ______. According to this text, piloted space missions will need
A flight to other solar systems will be made more possible by ______. According to this text, piloted space missions will need
admin
2009-04-18
44
问题
A flight to other solar systems will be made more possible by ______.
According to this text, piloted space missions will need to be ______.
选项
A、more exciting than earlier film versions.
B、supported by international organizations.
C、more cost-effective than they appear to be at present.
D、financed by individual governments.
答案
C
解析
第三段说探索太空的专家们正面临着如何降低太空飞行的成本问题,因此载人太空任务只能在成本大大降低时才能成为可能。只有C项最为贴切。
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本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
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公共英语四级笔试
公共英语(PETS)
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