2. 外语
  3. Astronomers believe that matter in different parts of the universe At the end of the passage the author suggests that

Astronomers believe that matter in different parts of the universe At the end of the passage the author suggests that

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问题 Astronomers believe that matter in different parts of the universe
At the end of the passage the author suggests that
选项 A、it is impossible for life to exist on other planets.
B、earthlike life could only exist on a few planets.
C、life could exist on only one planet in a million.
D、life could exist on a great number of planets.
答案D
解析
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