2. 外语
  3. Although the Earth’s chemical composition had been studied for years, only toward the end of the nineteenth century______as a di

Although the Earth’s chemical composition had been studied for years, only toward the end of the nineteenth century______as a di

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问题 Although the Earth’s chemical composition had been studied for years, only toward the end of the nineteenth century______as a discipline in its own right.
选项 A、when geochemistry was recognised
B、was geochemistry recognised
C、then recognised geochemistry
D、as geochemistry was recognised
答案B
解析
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C类竞赛（非英语专业本科）

大学生英语竞赛（NECCS）

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