单项选择题

听力原文:W: Good morning.
M: Good morning. What can I do for you?
W: I'd like a ticket to Pittsburgh, please.
M: Round trip?
W: No. One way.
M: Okay. That'll be twenty-two dollars.
W: Twenty two? last time I took this bus it was only twenty.
M: I know. The rates went up this month.
W: Just like everything else.
M: Yeah.
Where does the dialogue take place?
A.At the ticket office.
B.In Pittsburgh.
C.At the airport.

A.
M:
B.
M:
C.
M:
D.
W:
E.
M:
F.
W:
G.
M:
H.
Where
I.At
J.
B.In
K.
C.At
L.