单项选择题


Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.
What was the man’s complaint about the psychology professor

A.He doesn’t talk to the students.
B.He is a nice guy but he is never happy.
C.He is always talking to himself.
D.Too boring and is difficult to understand.