2. 外语
  3. The passage is mainly about ______. According to the passage the low-Earth orbit is ______.

The passage is mainly about ______. According to the passage the low-Earth orbit is ______.

admin2009-04-23  2
问题 The passage is mainly about ______.
According to the passage the low-Earth orbit is ______.
选项 A、the destination for most commercial payloads
B、a few hundred kilometers above the earth
C、about 36,000 kilometers away above the earth
D、a few hundred kilometers above the stationary orbit
答案D
解析 细节题。根据文章第五段第二句“很多商业有效荷载的目的地要么是现在已经很拥挤的固定轨道——许多卫星涌向这一距离地球赤道上空3万6千公里的地方挤占一席之地；要么奔向距离赤道上空只有几百公里近地极轨道。”可知地球低轨道位于对地静态轨道以上几百公里，故D正确。
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大学英语六级

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