【正确答案】 C

【答案解析】[解析] 19-22 M: Hi, Janet, where were you at lunch time? I was saving a seat for you in the cafeteria. W: Oh, sorry to miss you. But my thirst for knowledge was greater than my pains of hunger. M: I never had that problem. So where were you? W: My political science class ran overtime. M: That's been happening quite a bit lately, hasn't it? W: I guess so. Actually, what happens is that a bunch of us hang around for a while after class to talk with our professor and ask him questions. M: Who is this twentieth century's Operators? W: Professor Howl. Have you heard of him? M: Mh, he does have a good reputation in the politic science department. W: And a well deserved one. The same students who fall asleep in discussion group and seminars fight for front-row seats in his lectures. M: Oh, no. I hope this isn't catching. W: You can joke. But it's great to have a professor who's not only interesting but prepared to give up time to students. M: I know. They are a rare breed. Maybe I should sit in on his class some time. Do you think he'd care? W: Not at all. Lots of students bring their friends, and he says he feels flattered. M: Well, just to be safe. I think I'll bring my lunch along as well. W: I'll make a good student of you yet. Q. 19. What habit has the woman recently gotten into?