在横线上填入适当的单词，补全对话。

A: Could you tell us a little about yourself?

B: Sure.

A: Could you tell me   1   you were born?

B: I was born in London.

A: Have you still lived in London?

B: No, I'm   2   in Brighton now.

A: Oh, really?   3     4   have you been there?

B:   5   March.

A: Are you happy there?

B: Yes, very happy. I love the outdoor life.

淀粉样变易发生于

A．小血管基膜处

B．小血管外膜处

C．小血管中膜处

D．小血管内膜处