题目内容：

听下面一段较长对话，回答以下小题。

1.What are the two speakers doing?

A. Walking on the campus.    B. Eating at a dining hall.    C. Sitting on a campus bench.

2.What class does the man have in the auditorium(礼堂)?

A. Advanced economics.    B. Introductory economics.

C. Introductory literature.

3.How does the woman know that the economics class has a lot of students?

A. She took the class last semester.

B. She read about it in the school newspaper.

C. Her roommate took the course last semester.