题目内容

货币之所以能执行价值尺度的职能,从根本上来理解是因为( )。

A. 它能衡量其他商品价值的大小
B. 它是社会劳动的产物,本身具有价值
C. 它具有计量单位
D. 它可以是观念上的货币

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