[听力原文]
M: So, Jane, how long have you been an author
W: Well, Tom, I didn’t start writing until I was in my thirtieth, and I’m over seventy now. So goodness, I must have been writing for about forty years.

How long has the woman been an author（）

A. The man has been working in a small company for a long time.
B. The man used to work for a big company, but now he works in a small one.
C. The man works in a small company, but he doesn’t like it.
D. The man likes to work for a big company.

A.operational 
B.operative 
C.operate 
D.operation