听下面一段较长对话，回答以下小题。
【小题1】What is the woman?

A．A doctor.

B．A teacher.

C．A customer.

【小题2】What is probably the cause of the man’s problems?

A．He often overeats.

B．He works too hard.

C．He smokes heavily.

【小题3】What does the woman ask the man to do?

A．Stop working and go on a vacation.

B．Give up smoking as soon as possible.

C．Change his diet and get some exercise.