单选题She's cute, no question. Symmetrical features, flawless skin, looks to be 22 years old—entering any meat-market bar, a woman lucky enough to have this face would turn enough heads to stir a breeze. But when Victor Johnston points and clicks, the face on his computer screen changes into a state of superheated, crystallized beauty. "You can see it. It's just so extraordinary," says Johnston, a professor of biopsychology at New Mexico State University who sounds a little in love with his creation. The transformation from pretty woman to knee-weakening babe is all the more amazing because the changes wrought by Johnston's software are, objectively speaking, quite subtle. He created the original face by digitally averaging 16 randomly selected female Caucasian faces. The changing program then exaggerated the ways in which female faces differ from male faces, creating, in humanbeauty-science field, a "hyper-female". The eyes grew a bit larger, the nose narrowed slightly and the lips plumped. These are shifts of just a few millimeters, but experiments in this country and Scotland are suggesting that both males and females find "feminized" versions of averaged faces more beautiful. Johnston hatched this little movie as part of his ongoing study into why human beings find some people attractive and others homely. He may not have any rock-solid answers yet, but he is far from alone in attempting to apply scientific inquiry to so ambiguous a subject. Around the world, researchers are marching into territory formerly staked out by poets and painters to uncover the underpinnings of human attractiveness. The research results so far are surprising—and humbling. Numerous studies indicate that human beauty may not be simply in the eye of the beholder or an arbitrary cultural artifact. It may be ancient and universal, wrought through ages of evolution that rewarded reproductive winners and killed off losers. If beauty is not truth, it may be health and fertility: Halle Berry's flawless skin may fascinate moviegoers because, at some deep level, it persuades us that she is parasite-free. Human attractiveness research is a relatively young and certainly contentious field—the allure of hyper-females, for example, is still hotly debated—but those on its front lines agree on one point: We won't conquer "looks-ism" until we understand its source. As psychologist Nancy Etcoff puts it: "The idea that beauty is unimportant or a cultural construct is the real beauty myth. We have to understand beauty, or we will always be enslaved by it. /

单选题 Congress makes the laws in the United States. It has two parts, which are more or less equal in power. They are known as the House of Representatives and the Senate. The House of Representatives is larger than the Senate whose 100 members (two from each state) serve for six years. The 435 members of the House are elected every two years, and the number from each state is determined by the population of the state. For example, California, which has a large population, has 43 representatives, while the State of Nevada has only one. The House and Senate are divided into small groups which take care of special matters such as education or foreign affairs. The most important work of Congress is often done in these groups, which are called subcommittees. According to the Constitution of the United States, a senator must be at least 30 years old and he must have been a citizen of the United States for nine years at the time of his election. To be elected to the House a person must be 25 years old and must have been a United States citizen for seven years. At the present time, members of Congress include businessmen, farmers, teachers, and especially lawyers. In general, senators are better known than representatives because they are fewer in number and serve for a longer time. Many American presidents served in Congress before they became president.

单选题______ had I opened the cage than out flew the lovely bird.

单选题The {{U}}lenient{{/U}} decision of the dean caused anger among the professors.

单选题Bother Kohler and Koffka became ______ advocates of this new school of thought, and both went on to produce many experiments, articles, and books in support of it.

单选题If a needle is thrown ______ on a sheet of paper ruled with lines, how often can it be expected to fall on a line?

单选题Since she did not have time to read the entire play before class, she read {{U}}an outline of the plot{{/U}} instead.

单选题In the dim light, I managed to ______ the shadowy figure of a big lion among the trees.

单选题Bill Gates is one of those who are said to be ______ , able to rack huge profits at every turn.

单选题Success as ______ by economic output bears no close relationship to human achievement.

单选题If it goes on to ______ its responsibilities, then the British government must act immediately in its place.

单选题His ideas about the current situation were so ______ that I had to agree with him.

单选题This monument image was designed to {{U}}stir up{{/U}} emotions of awe and respect, but could scarcely evoke feelings of warmth and affection.

单选题I cannot thank you very much for your kindness, I owe my success to you.

单选题Such benefits are predicted to be greatest for Germany and Austria, ______ retain the closest ties with the candidate countries.

单选题Cowries shells were once in widespread use as a token of value.

单选题With good reasons he is called a fool.

单选题Not much people realize that apples have been cultivated for over 3, 000 years.

单选题Life insurance, {{U}}before available only to young, healthy persons{{/U}}, can now be obtained for old people, and even for pets.

单选题In the world of sport, the four-minute mile—the "dream mile"—until recently was the most {{U}}intriguing{{/U}} goal remaining to the individual athlete.