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发布时间: 1970-01-01

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1最佳选择题 3分

WhichofthefollowingdoesNOTfitthedefinitionofthebla

  • A. The black hole is a region of space.
  • B. The black hole sucks in any object that passes by it.
  • C. The black hole is visible through an infrared telescope.
  • D. The black hole has no matter.
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正确答案: -

本题解析: 暂无解析

2最佳选择题 3分

Welearnfromthispassagethat

  • A. the sun is the heaviest star in the universe.
  • B. a star in the sky might have an invisible partner.
  • C. two black holes are dragged towards each other.
  • D. the mass of a star is equal to that of its companion.
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本题解析: 暂无解析

3最佳选择题 3分

AccordingtoEinstein'stheoryobjectsintheareaofablac

  • A. are gathered in its center.
  • B. strike against one another frequently.
  • C. do not have absolute space.
  • D. are relatively brighter.
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本题解析: 暂无解析

4最佳选择题 3分

Whydoestheauthorputneutronstarinquotationmarks?

  • A. It is a special term of astronomy.
  • B. It is an invented term.
  • C. He is quoting an authority.
  • D. He is using the term ironically.
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本题解析: 暂无解析

5最佳选择题 3分

Whatleadstotheformationofablackhole?

  • A. The structure of a star.
  • B. A collision between two stars.
  • C. The attraction of two large stars.
  • D. The shrinking of a large star by its own gravitational force.
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本题解析: 暂无解析

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