Money ________. (钱 _ _ _ _ _ _ _ _。——中文由在线翻译而来,仅供参考)
A.
is always composed of coins and paper总是由硬币和纸制成
B.
loses its value as it becomes older随着年龄的增长而失去价值
C.
requires a double coincidence of wants需要双重巧合
D.
is any commodity that is generally acceptable as a means of payment是通常可接受的任何商品作为付款方式