A、Unemployment. B、Family breakup. C、Mental problems. D、Drinking. B信息明示题。女士问在街上流浪的是哪些人，男士说有失业的，有精神病患者，还有一些酒鬼，并没有提及家庭破裂者，排除B。

M: I couldn’t put up with my wife any longer. I don’t know why she usually wants to look at everything in such a negative way.
W: Maybe you should try to get to know something about her childhood.
Q: What does the woman mean?

W: Tony, who are the street people? How did they get to be living in the street?
M: Well, some of them lost their jobs, some of them have mental problems, and some of them drink.
Q: Which of the following factors is NOT mentioned as a cause of becoming street people?