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. I just get so embarrassed and nervous whenever I've 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 it will 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, Brain 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.
(23)
A．She felt embarrassed in class.
B．Her presentation received a poor grade.
C．She had not completed her assignment.
D．She was unable to attend her psychology class.
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