A、They made visitors appreciate the paintings more. B、They made visitors unable to evaluate. C、They made visitors tend to give l

At the University of Kansas art museum, investigators tested the effects of different colored walls on two groups of visitors to an exhibit of paintings. For the first group the room was painted white; for the second, dark brown. Movement of each group was followed by an electrical system under the carpet. The experiment revealed that those who entered the dark brown room walked more quickly, covered more area, and spent less time in the room than the people in the white environment. Dark brown stimulated more activity, but the activity ended sooner. Not only the choice of colors but also the general appearance of a room influences those inside. Another experiment presented subjects with photographs of faces that were to be rated in terms of energy and well-being. Three groups of subjects were used. Each was shown the same photos, but each group was in a different kind of room. One group was in an ugly room that resembled a messy storeroom. Another group was in an average room, a nice office. The third group was in a tastefully designed living room with carpeting and drapes. Results showed that the subjects in the beautiful room tended to give higher ratings to the faces than those in the ugly room. Other studies suggest that students do better on tests taken in comfortable, attractive rooms than in ordinary-looking or ugly rooms.
Questions 26 to 29 are based on the passage you have just heard.
26. Which of the following best expressed the main idea of the passage?
27. What can be inferred about visitors in a white-colored room?
28. How did ugly rooms influence visitors at an exhibition?
29. According to the passage, in which rooms do students tend to do best on tests?