听力原文:W: It's really a big problem to teach our children how to behave. When I get angr
M: If you want your kids to be polite, you'll have to be polite to them.
Q: What conclusion can be drawn from this conversation?
(17)
A.Children learn by example.
B.Children must not tell lies.
C.Children don't like discipline.
D.Children must control their temper.