The experiment with the dove indicated that ______.
A.birds can fly in the same direction as that taken by their cousins
B.a bird that has been caged will not fly long distances
C.some birds seem to follow the stars when they fly at night
D.a bird having spent its lifetime in a cage has to be taught how to navigate
第1题
在信用关系的价值运动中,货币执行的职能是()。
A.价值尺度
B.流通手段
C.支付手段
D.储藏手段
第2题
在商品交换中起媒介作用的货币,执行的是()
A.价值尺度职能
B.支付手段职能
C.贮藏手段职能
D.流通手段职能
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