单选题：Under the support of money and price mechanism, people can _

题目分类：英语六级
题目类型：单选题
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题目内容：

Under the support of money and price mechanism, people can __________~ A．regulate the supply of goods and the demand of services
B．compare the difference between goods and services
C．manage the balance between demand and supply
D．make economic plans in highly developed societies

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