移动端

  • 题王微信公众号

    题王微信公众号

    微信搜“题王网”真题密题、最新资讯、考试攻略、轻松拿下考试

学历语言类 | 考研公共课

单选题 What do campaigners who lobby to preserve languages do to save endangered languages?

A

Take measures to slow down languages’ vanishing rate.

B

Try to make known languages’ accelerating vanishing rate.

C

Try all their out to record and reconstruct the vanishing languages.

D

Slow down languages’ vanishing rate and meanwhile make it known.

问答题 They were, by far, the largest and most distant objects that scientists had ever detected: a strip of enormous cosmic clouds some 15 billion light years from earth. 1) But even more important, it was the farthest that scientists had been able to look into the past, for what they were seeing were the patterns and structures that existed 15 billion years ago.That was just about the moment that the universe was born. What the researchers found was at once both amazing and expected; the US National Aeronautics and Space Administration’s Cosmic Background Explorer satellite—Cobe—had discovered landmark evidence that the universe did in fact begin with the primeval explosion that has become known as the Big Bang (the theory that the universe originated in an explosion from a single mass of energy).   2) The existence of the giant clouds was virtually required for the Big Bang, first put forward in the 1920s, to maintain its reign as the dominant explanation of the cosmos.According the theory, the universe burst into being as a submicroscopic, unimaginable dense knot of pure energy that flew outward in all directions, emitting radiation as it went, condensing into particles and then into atoms of gas. Over billions of years, the gas was compressed by gravity into galaxies, stars, plants and eventually, even humans.   Cobe is designed to see just the biggest structures, but astronomers would like to see much smaller hot spots as well, the seeds of local objects like clusters and superclusters of galaxies. They shouldn’t have long to wait. 3) Astrophysicists working with ground based detectors at the South Pole and balloon borne instruments are closing in on such structures, and may report their findings soon.   4) If the small hot spots look as expected, that will be a triumph for yet another scientific idea, a refinement of the Big Bang called the inflationary universe theory.Inflation says that very early on, the universe expanded in size by more than a trillion fold in much less than a second, propelled by a sort of antigravity. 5) Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary particle physics, and many astrophysicists have been convinced for the better part of a decade that it is true.

问答题 1)The original insight that people could be classified into Type A and Type B personalities and that Type A’s were more heart-attack prone1 grew out of research at the Framingham Heart Study laboratories in the late 1970s.   Dr. Peter Wilson, director of the Framingham laboratories, agreed in a telephone interview last week that since the early studies, the AB issue has been getting weaker. 2)A large prospective study2 (in which people are followed for years before years before they get sick) last year showed the A-B behavior distinction was not associated with coronary artery disease.Now researchers are thinking in terms of “anger in” vs. “anger out” as the latest area of concern.   Behavioral epidemiologist Elaine Eaker at the National Heart, Lung and Blood Institute in Bethesda, one of the nation’s foremost scholars of correlations between behavior and heart disease, agrees in principle.   “There is no epidemiological evidence on hostility alone, but anger has been linked to CHD (coronary heart disease) events weakly for white collar men and more strongly for women in clerical jobs,” she said last week.   “The Type A concept is still viable because it has been a predictor of heart disease in at least two long-term studies. But recent research has shown that how you cope with anger may be the new coronary prone behavior of the future. And it’s tough to cope with anger,” she added.   3)Since holding anger inside may lead to heart trouble and since acting it out by having temper tantrums is highly antisocial, Eaker says researchers now advocate maturely “discussing” anger—either with the person who makes you angry or with a friend—as the most constructive method of dealing with explosive feelings.   4)Since the early Type A studies, researchers have been attempting to fine-tune the ways in which they can identify a person as Type A or Type B, not an easy task since people often deny or are actually unaware of some facets of their personalities and hence can not be asked point-blank if they are angry or impatient by nature .   Dimsdale used both pencil-and-paper questionnaires and a “semi-structured” interview technique to identify Type A personalities among heart patients.   In the interviews, he explained, “you ask questions slowly and sometimes even in a stammer and then see how rapidly the person will finish the sentence for you.” People who rush to answer are usually highly impatient and impatience has long been considered a major component of Type A behavior.   5)Yet, no matter whether he used the self-report questionnaires or the more subtle interview technique, people identified as The A’s did not fare worse than the others.

首页 上一页 1 2 3 4 5 下一页 尾页 /

到第