题目内容：

听下面一段较长对话，回答以下小题。

1.Why does David go to Professor Smith for help?

A. He had trouble with today’s lecture.

B. He missed all the classes last week.

C. He wanted to learn how to take notes.

2.What should David do at the start of each class?

A. Have a short talk with the professor.

B. Look through the notes from last class.

C. Take down the main points of the lecture.

3.How can David find the most important information to write down?

A. By remember all the details of the lecture.

B. By reading the notes taken by his classmates.

C. By focusing on the organization of the lecture.

4.How many suggestions has Professor Smith given to David?

A. Two.

B. Three.

C. Four.