货币必要量规律通称（）
A.物物交换规律
B.价值规律
C.商品流通规律
D.货币流通规律
参考答案：D
经济管理与伦理道德的关系？
Helen is 15 years old, and Joan is 15, too. So Helen is Joan.
A. as big as B. as older as C. as old as
