从下图中得到的信息是( ) A.河姆渡居民已经学会了挖掘水井,

从下图中得到的信息是(  )

A.河姆渡居民已经学会了挖掘水井,饮水方便了

B.它反映了山顶人的氏族生活

C.半坡居民已经学会了建造房屋,开始集体生活

D.大汶口居民的手工业比以前有了更大的进步

答案

 A

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