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【单选题】
The nominal exchange rate between the U.S. dollar and the Japanese yen is the:A.
number of yen you can get for lending one dollar in Japan for one year.
B.
number of yen you can get for one dollar.
C.
price of U.S. goods divided by the price of Japanese goods.
D.
price of Japanese goods divided by the price of U.S. goods.
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反馈参考答案：
举一反三
【单选题】一质点沿x轴作直线运动,其v-t曲线如图所示,t=0时,质点位于坐标原点,则t=4.5 s时,质点在x轴上的位置为:
A.
5m ．
B.
2m.
C.
0m ．
D.
-2m
E.
-5m.
参考解析：
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