2. 外语
  3. Human evolution is lengthy process of change______people originated from apelike ancestors. Scientific evidence shows that the p

Human evolution is lengthy process of change______people originated from apelike ancestors. Scientific evidence shows that the p

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问题 Human evolution is lengthy process of change______people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people evolved over a period of at least 6 million years.
选项 A、of which
B、by which
C、for which
D、by that
答案B
解析 句子大意为：人类进化是一个漫长的过程，通过这个变化过程，人类从类人猿祖先中产生了。科学证据表明，人类共同具有的体型和行为方面的特征是在长达6百万年的历史长河中演变而来的。本题考查关系代词which和常用介词的搭配。of表示“所属”：by表示“方式”；for表示“目的”：that不能引导非限制性定语从句。所以，正确答案是B。
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