A、A shop assistant. B、A librarian. C、A secretary. D、A teacher. B女士话里包含了关键特征词book，the reserve room，the reserve librarian，in the l

W: You never speak English unless you absolutely have to. I’ll help you if you promise to speak nothing but English all the time.
M: All right. Maybe I’ll do that. It’s the only way I’ll be able to learn English fast enough, I guess.
Q: What can we learn from the conversation?

W: Yes, when a book is on reserve, a student can go to the reserve room and ask the reserve librarian for the book. The student can have the book for a few hours, and he or she must read it in the library during that time.
M: Thank you. I understand now. I am on my way to the reserve room.
Q: What’s the probable job of the woman?