Cowboy is required to keep track of only five signals, now, but he may have to think harder soon. Dr. Findley plans to shine two lights at once, and requires the baboon to push the button when the correct combined number has sounded.
If Cowboy is able to do this, he will have learned how to add.
Questions 26 to 28 are based on the passage you have just heard.
26. What does the color of the light stand for?
27. What does Dr. Findley plan to teach Cowboy?
28. What is the best title for this selection?
Passage Two
Most libraries are alike in certain basic ways. The major section of a library usually contains hundreds and hundreds of books called Circulation Books. These are books you can borrow for several weeks at a time. Brand-new books are often placed in a special section of a library and can be borrowed for only a few days. In yet another section, the Reference Section, books may not be borrowed at all, but must be used only in the library. Reference books are in great demand and this is why they can not be taken home. Libraries also have magazines and newspapers. These are called periodicals. Libraries also have newspaper clippings which are arranged alphabetically by subject in a vertical file. A librarian may have to help you to use the vertical file. Many libraries today have areas called Media Resource Center. In such centers you can find information in a wide variety of resource media. Besides books and periodicals, a Media Resource Center may have collections of records, films, micro film of old newspapers, slides, reproductions of art work, and sound and video tape recordings. The machines and equipment necessary for using these materials are usually right in the library, or may be in a nearby area.
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