听力原文：M: Hi, Sarah. What's up？W: Oh, hi. I just got out of a history class, I had to gi

听力原文：M: Hi, Sarah. What's up？

W: Oh, hi. I just got out of a history class, I had to give a presentation.

M: How did it go？

W: Terribly. I'm sure I made a fool of myself.

M: Why？ Weren't you prepared？

W: No, it's not that. just get so embarrassed and nervous whenever I have to speak in front of a group of people. I stand up and my face gets red and...then I get even more nervous because I know everyone can see me blushing.

M: It is not so bad to blush.

W: But it happens all the time. If the professor asks a question and I know the answer, I'll blush like crazy if he calls on me. Doesn't that ever happen to you？

M: No, not really. Maybe you should try to forget about the people. Look at something else in the room, like the exit sign.

W: I guess I could try that. But I doubt that it'll help.

M: You know we talked about this in psychology class. Blushing, even though it's involuntary, is more or less a learned behavior.

W: What do you mean？

M: Oh, children hardly ever blush at all. And, among adults, supposedly women blush more than men.

W: I wonder why.

M: I don't know. But I had a friend in high school, Brian Smith. It was really easy to make him blush. He turned red whenever a waitress would ask him for his order.

W: I'm not that bad. Well, I've got to get going for my next class. I'll talk to you later.

(20)

A．She felt embarrassed in class.

B．She had not completed her assignment.

C．Her presentation received a poor grade.

D．She was unable to attend her psychology class.