A、At the same time. B、The woman. C、The man. D、It’s not mentioned. C此题属于对时间的推理判断。题目询问谁先开始从事自己的爱好的。对话中男士问女士拉小提琴多长时间了，女士说5年了，而男士说“.

M: I’ve heard that you play the violin very well.
W: Thank you. I like it. That’s my hobby.
M: It’s a nice hobby. How long have you played that instrument?
W: (6)Five years. What do you do in your spare time?
M: I like taking pictures. In order to take good pictures, I have frequently been traveling for six years.
W: That’s really interesting. Have you been traveling lately?
M: Well, (7)I have been to Europe, Asia, and I’ve just come back from Africa. I took a lot of pictures there.
W: Great. I’d love to see some of the pictures of yours.
M: I would be glad to show you these pictures.
W: And I would be glad to play my violin for you.