单项选择题
Conversation 1
M: Excuse me, (6)I’d like to go to the Science Museum, but I don’t know how to use this ticket machine.
W: Well, just press this button. It’s two dollars.
M: Thanks.
W: The train is coming soon. Please wait a moment.
M: All right. How often do the trains come at this time of the day
W: (7)Usually they come about every six minutes.
M: Okay, where should I get off
W: Just get offat the Science Museum. That’s five stops from here.
M: I’ve got it. Thanks for your help.
W: You’re welcome.
A. About every four minutes.
B. About every five minutes.
C. About every six minutes.
D. About every seven minutes.