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听力原文:W: What's the matter with you, Sir?M: I bought the radio yesterday, but it doesn'
听力原文:W: What's the matter with you, Sir?
M: I bought the radio yesterday, but it doesn't work well. I want to change it.
What does the man want to do?
A.To get his receipt.
B.To get back his money.
C.To have his radio changed.