听力原文:W: Sorry I did not come yesterday, because I had a temperature. Could you tell me
M: The theme of your paper can be about business management or touring resources in China, and the length of the paper should be no less than fifteen pages.
Q: What is the most probable relationship between the two speakers?
(19)
A.Manager and employee.
B.Salesman and customer.
C.Guide and tourist.
D.Professor and student.