有了人类,就有了人类社会。我国境内的人类活动至少出现在A.三

有了人类,就有了人类社会。我国境内的人类活动至少出现在

A.三四百万年前           B.170万年前         

C.70-20万年前            D.公元前21世纪

 

答案

B

解析:略

 

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