A、His headache. B、His smoking. C、His girlfriend. D、His sister. C推理判断题。女士询问男士情绪反常的原因，男士明确回答是因为女人的麻烦事，并感叹这些事令人头疼，后文中他也具体讲述了他和女友之间发

W: (19)Why the long face? I’ve never seen you so down. I thought you quitted smoking. How come you started again?
M: Troubles, my dear sister. (20)Female troubles. What a bunch of headaches!
W: Which one now? Or should I ask you how many?
M: Be serious! Just the one I’ve been dating with for the past two months.
W: You mean the gorgeous blond, Monica, that you fell so hard for? Kind of sudden, wasn’t it?
M: That’s the one. I thought she was the one for me, my ideal woman, the girl of my dream. (20)Now I’ve found out she seems to be cheating on me.
W: Really? No wonder you’re so depressed. She’s not the only fish in the sea, you know. Step out of home and go downtown, have a beer, and find another chance.
M: Oh, knock it off, Maria. I’ve been true to her, but she’s been playing around. You see, we were supposed to meet at the Student Union yesterday, but she didn’t turn up. When I finally called her this morning, she told a lie to me.
W: Why are you so sure that it was a lie? Don’t you trust her?
M: Her story didn’t hang together. Besides, Michael came to tell me Monica was dating with some guy in a club while I cooled my heels waiting for her in the Union. It makes me boil.
W: Hey. calm down, Daniel. (21)Are you going; to take Michael’s word for it? How could he have known when and where you were meeting?
19. What makes the woman know something is wrong with the man?
20. What’s the man’s problem about?
21. What does the woman think about Michael?