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听力原文:M: You must have been driving at seventy miles an hour. Didn' t you see the speed
W: I can' t have been driving that fast.
M: I was doing eighty when I overtook you.
What were they talking about?
A.The driving speed of the woman.
B.How fast they should drive.
C.The speed limit.
D.The driving speed of the man.
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