听力原文：One of ray main goals in this survey course of American painting and architecture

听力原文： One of ray main goals in this survey course of American painting and architecture is to train you to see. I want you to increase your stock of visual experiences by using the slide library at least five hours a week. The library, which is maintained by the Art History Department, is located in the basement of the Art Center, and is open seven days a week.

By the end of this course, I expect you to be able to identify two thousand slides of various American works of art. Slide identification questions will appear on the weekly exam and the final. During each of the ten weeks of this course, I will show a set of two hundred slides during my lectures. You should plan on looking at each set twice in the slide library, once before the week's lectures end one after. This pattern of three exposures will improve your visual memory. Please do not remove the slides from the slide library. Doing so is a cause for dismissal from the course.

Although becoming familiar with two thousand slides may sound difficult, experience has shown me that this is the beast way to increase the visual abilities of students such as yourselves, who have never taken an art history course before.

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A．The material to be tested that day.

B．The history of the slide library.

C．The use of slides in the course.

D．The outline of the course.