【正确答案】 C

【答案解析】[听力原文]
Tom: Mary, you were born in Japan but you"ve been living in America for a long time, haven"t you?
Mary: Yes, I was 5 years old when my parents immigrated to America and I"ve been living here for 20 years now.
Tom: Do you think that belonging to two different cultures has affected your personality?
Mary: Yes, certainly. There are times when I think that I have two personalities. Depending on where I am and who I"m with, I"m Japanese or I"m American.
Tom: That sounds complicated. Could you explain what you mean?
Mary: Well, growing up in America when I was going to high school, for example, I was known as Mary to the outside world, and as Sun-kyung at home. I would wave hello to my teachers, but bow to my parents" Japanese friends when they visited our home.
Tom: Do different cultures have different ideas as to what is polite?
Mary: Yes, definitely. In high school, I was expected to look straight in the eyes of my teachers and to talk openly with them. But when Japanese spoke to me, I was expected to look at my feet and to be shy and silent.
Tom: Do you think that having two personalities makes you a richer person?
Mary: Yes, but sometimes I don"t know who I am.