单项选择题

听力原文:W: You Americans are funny! It seems as if you were married to your cars.
M: Yeah, I guess that's true. The country is becoming one big highway. I was reading that there are about 4 million miles of roads and highways in this country now.
Q: What are they talking about?
(18)
A.Families with cars.
B.Americans' heavy dependence on cars.
C.Roads and highways.
D.Traffic problems in America.

A.
M:
B.
Q:
C.Families
D.
B.Americans'
E.
C.Roads
F.
D.Traffic
G.