单项选择题

听力原文:W: Whereas European nations have traditionally employed metric units such as meters and grams, the US has employed English units such as feet and pounds.
M: Both systems are now in use in the US, though.
Q: What are the two people talking about?
(13)
A.European tradition.
B.Weights and measurements.
C.Employment.
D.US political system.

A.
M:
B.
Q:
C.European
D.
B.Weights
E.
C.Employment.
D.US
F.
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