单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
What does the professor think of comparing a culture to a club

A.A culture is exactly the same as a club.
B.The comparison is imperfect.
C.It is easier to define a culture than a club.
D.Clubs are important in most cultures.