选择题:美元与人民币汇率由1美元=6.6689人民币变为1美元=6.3649人民币时,说明()

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题目内容:

美元与人民币汇率由1美元=6.6689人民币变为1美元=6.3649人民币时,说明()

A.美元汇率上升,人民币汇率上升

B.美元汇率下跌,人民币汇率下跌

C.美元汇率上升,人民币汇率下跌

D.美元汇率下跌,人民币汇率上升

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