【正确答案】 C

【答案解析】[听力原文]
   M: I've been waiting here in the conference room for ten minutes already. What time does our meeting start? Where is everyone anyway?
   W: Didn't you hear about that? Our meeting was postponed until Friday.
   M: What? The meeting was postponed? No one told me anything about it.
   W: Didn't you get the memo?
   M: What memo? There haven't been any memos this whole week. I check my inbox every day, and I haven't seen anything.
   W: The memo went out three days ago. It should have made it into your inbox, but maybe it got lost in all the mess on your desk.
   M: You know how things get piled up on my desk when I am busy. I know that sometimes I do misplace things, but I always read all the memos that go around. They go directly to my inbox. Are you sure it was sent to the whole office?
   W: It should have gone around to everybody. They also posted a copy of the memo on the break room. Don't you ever look at the messages posted on the bulletin board?
   M: I am usually too busy to take a bunch of coffee breaks. Anyway, I am sure the memo never got to my inbox. I'll have to talk to my secretary about it.
   W: That's right. You never know what you're missing out if you don't read the memos.
   M: Yeah, you are right.
   Why didn't the man know the meeting was postponed?