color caused by carotenoids, people preferred the carotenoid skin color，"said Dr. Stephen.

　　"The study findings are important as they suggest that evolution favours people who choose to form alliances with healthier individuals over unhealthy individuals，"Dr.Stephen explained.

　　Professor David Perrett said，"This is something we share with many other species. For example, the bright yellow beaks and feathers of many birds can be thought of as signs showing how healthy a male bird is. Besides，females of these species prefer to mate with brighter，more colored males. But this is the first study in which this has been demonstrated in humans."

　　【语篇解读】　人们通常认为，晒晒太阳有利于改善人的肤色。最近一项研究结果表示，多吃蔬菜和水果更有利于获得健康的肤色。

　　1．What does the underlined word "glow" in Paragraph 1 mean?

　　A．face color. B．Slim figure.

　　C．Daily diet. D．Healthy skin color.

　　D　[词义猜测题。文章多次提到"healthy skin color"，由此可知，glow在本文中指的是"健康的肤色"。本意指的是"(面颊上的)红光，红晕，红润的气色"，故选D。]

　　2．According to the text, most people tend to believe ．

　　A．getting a suntan can improve their skin color

　　B．eating vegetables can't give them good color

　　C．eating vegetables is less effective than suntan

　　D．getting a suntan has a side effect on their skin

　　A　[细节理解题。从第二段首句中的"Most people think the best way to improve skin color is to get a suntan"可知，在研究结果公布之前，人们大都认为晒阳光有利于改善肤色，故选A。]

3．Professor David mentioned the example of birds to stress ．