听力原文：M: Professor Baker, may I come to your office to discuss my paper with you this a

W: Sure. I had a meeting at 1 o'clock. So give me a ring before you come.

Q: What can we learn from the conversation？

(16)

A．Professor Baker will see the man at 1 o'clock.

B．Professor Baker will meet the man after the meeting.

C．Professor Baker asked the man to come another time.

D．Professor Baker had to buy a ring before the man came.