(1) What can the woman be?
A)A secretary of Mr. Li' s.
B)A desk clerk at a hotel.
C)A waitress at the Blackwood Hotel.
(2) Why did the man ask the woman to change the dollar?
A)To pay for the information.
B)To take a bus.
C)To make a phone call.
原文：
Text 6
W: Oh, excuse me, Mr. Li, I almost forgot there is a phone message here for you. A Dr. Green called and asked you to call him back.
M:Where is he now, do you know?
W : He' s staying at the Blackwood Hotel, Room 707.
M:Thank you very much. Do you happen to have the number of the Blackwood?
W:I'm sorry,I don't. But you can get it from Information. Just dial 411.
M:Oh, and could I trouble you for changing a dollar?
W:All right. Here is your change. By the way, the public phones are over there on your right.
M: I see. Thank you.