单选题 Woman: What seems to be the problem?
Man: Well, I understand the lectures, but I get mixed up when I try to read the book.
Question: What does the man mean?

A、 He is doing well in the class.
B、 The book is confusing.
C、 The lecture is not very clear.
D、 The lectures are from the book.

【正确答案】 B

【答案解析】女士：“有什么问题吗?”男士：“我能理解讲课的内容，但是当我读书的时候就混淆不清了。”根据对话内容，A项没有被提及，B项“这本书模糊不清”符合题意。C项，男士能理解演讲的内容，可推断演讲内容很清楚。D项对话没有提及演讲的出处。