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  3. Using money as a medium of exchange means that______ A barter economy is one in which______

Using money as a medium of exchange means that______ A barter economy is one in which______

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问题 Using money as a medium of exchange means that______
A barter economy is one in which______
选项 A、value is decided by weight
B、value is decided by number
C、money is used and goods are not exchanged
D、goods are exchanged and money is not used
答案D
解析 第二段第二句指出，物物交换经济是等价的物品之间的交换。
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考研英语一

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