听力原文:M: Do you brush at least three times a day?W: No, only once a day. You mean, that
听力原文:M: Do you brush at least three times a day?
W: No, only once a day. You mean, that's where the problem lies?
Q: What is the man?
(14)
A.Teacher.
B.Dentist.
C.Flight attendant.
D.Tour guide.