2. 外语
  3. Many meteorites are thought to have originated from ______ that once existed between the orbits of Mars and Jupiter.

Many meteorites are thought to have originated from ______ that once existed between the orbits of Mars and Jupiter.

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问题 Many meteorites are thought to have originated from ______ that once existed between the orbits of Mars and Jupiter.
选项 A、where a planet or planets
B、a planet or planets so
C、which a planet or planets
D、a planet or planets
答案D
解析
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