One advantage of space-based solar power system is that it is economical．

试卷相关题目

• 1Space-based solar cells could collect solar power only when skies are clear．

  A.Right

  B.Wrong

  C.Not mentioned

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• 2Solaren is going to design 200 solar-power satellites．

  A.Right

  B.Wrong

  C.Not mentioned

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• 3Solar-power satellites will use radio waves to beam energy down from space．

  A.Right

  B.Wrong

  C.Not mentioned

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• 4He was kept in __appalling__ conditions in prison．

  A.necessary

  B.terrible

  C.critical

  D.normal

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• 5The project required ten years of __diligent__ research．

  A.hardworking

  B.social

  C.basic

  D.scientific

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• 6Inflatable minors are used to reduce the space-based solar power system．

  A.Right

  B.Wrong

  C.Not mentioned

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• 7Space-based solar power will rule out other forms of renewable energy sources．

  A.Right

  B.Wrong

  C.Not mentioned

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• 8Many countries will grant permission for the use of spaced-based solar power soon．

  A.Right

  B.Wrong

  C.Not mentioned

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• 9According to the first two paragraphs，the early universe_______．

  A.was governed by simpler physics

  B.got fewer stars shinning in it

  C.started over 13 billion years ago

  D.was composed in a way similar to that of today

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• 10What can the state-of-the．art computer simulation tell us about、

  A.How the Big Bang occurred about 13 billion years ago．

  B.How"cosmic dark ages"came into existence．

  C.How dust grains and gases were formed after the Big Bang．

  D.How the first stars canle into being after the Big Bang．

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