2. 外语
  3. The passage focuses on comets primarily in terms of their It can be inferred from the passage that the nucleus of a comet is m

The passage focuses on comets primarily in terms of their It can be inferred from the passage that the nucleus of a comet is m

admin2004-12-28  99
问题  The passage focuses on comets primarily in terms of their
  It can be inferred from the passage that the nucleus of a comet is made up of
选项 A、dust and gas
B、ice and dust
C、hydrogen gas
D、electrically charged atoms
答案B
解析
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