At the University of Kansas art museum, scientists tested the effect 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 equipment under the carpet.
The experiment showed that those who entered the dark brown walked more quickly, covered more area, and spent less time in the room than people in the white one. Dark brown made people more active, but the activity ended sooner.
Not only the choice of colors but also the general appearance of a room affects those inside. Another experiment presented people with photographs of faces whose energy was to be commented. Three groups of people were used; each was shown the same photos, but each group was in an ordinary room--a nice office. The third was in a tastefully designed living room with carpeting.
Results showed that the people in the beautiful room tend to give higher marks to the faces than those in the ugly room did. Other studies that students do better on tests taken in comfortable room than in ordinary-looking or ugly rooms.
Which of the following is the best expression of the main idea of this passage?（ ）
本题为主旨大意题，需通读全文。文章全面介绍了各种色调的室内装饰对人的影响。
我国独立自主的外交政策体现在哪些方面？我国为什么必须实行对外开放？
简述人民民主专政理论的基本内容。
简述走农村包围城市，武装夺取政权道路的必要性。
简述实践及其对认识的决定作用。
遵义会议集中解决了党的政治路线问题。
生产方式是社会发展的决定力量。
对外开放是我国的一项长期的基本国策，实行这一国策的前提和基础是（ ）
计划和市场是（ ）
加强党的自身建设，必须放在首位的是（ ）
中国共产党的立党之本、执政之基、力量之源是（ ）
