2. 职称英语
  3. Although the Earth’s chemical composition had been studied for years, only towar

Although the Earth’s chemical composition had been studied for years, only towar

游客2023-10-19  27
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
转载请注明原文地址:https://tihaiku.com/zcyy/3110522.html
相关试题推荐
随机试题
最新回复(0)