听力原文:M: I'm leaving for America and still have some RMB with me. There is about 700 yu
W: Yes, we can convert your leftover RMB back into foreign money.
Q: How much RMB yuan does the customer want to exchange for US dollars?
(19)
A.700 yuan.
B.600 yuan.
C.650 yuan.
D.750 yuan.