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The work for which Thomas Malthus is still most widely known is his Essay on the Principle of Population, which first appeared in 1798. This book introduced Malthus’s __67__ that population inescapably outgrows subsistence (生活资料), and that this difference __68__ population size and the ability to adequately meet the __69__ subsistence needs of all the members of that population " naturally" produces a fundamental struggle for __70__ in which some flourish at the __71__ of others. Charles Darwin’s most important contribution __72__ the field of biology, described in his work. On the Origin of Species, was to __73__ Malthus’s observation that plants and animals multiply faster than nature can provide for them to his own __74__ of the process of "evolution" - the notion that different forms of life develop __75__ from a common ancestry (祖先). Combining these elements, Darwin __76__ that the factors of "the struggle for existence" and "the survival of the fittest" are the central mechanisms __77__ which evolution is based. In this sense, then. Darwin introduced the possibility __78__ conflict and struggle are biological phenomena, which are __79__ central to human social existence. A number of more contemporary social thinkers were __80__ by Darwin and continued this particular version of the conflict perspective, commonly referred to __81__ social Darwinism, into the twentieth century-Thus, for example, Herbert Spencer, a __82__ English social theorist, applied these ideas of the natural __83__ of conflict and survival of the fittest to his . notion of social evolution, __84__ William Graham Summer, an American sociologist, saw the __85__ for survival among individual actors as operating to bring about fundamental __86__ in the quality of human social life overall. 82（）
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Passage Three Questions 33 to 35 are based on the passage you have just heard. What problem will people have if they experience habitual loneliness?（）
第二篇 Effects of Exercise on Elderly Diabetics(糖尿病人)Most older people with so-called type II diabetes(糖尿病) could stop taking insulin(胰岛素) if they would do brisk exercise for 30 minutes just there times a week , according to new medical research results reported in a Copenhagen newspaper, Results from tests conducted on diabetics at the Copenhagen central hospital Rigshospitalet’s Center for Muscle Research showed that physical exercise can boost the body’s ability to make use of insulin by 30 per cent. This is equal to the effect most elderly diabetics get from their insulin medication(药物治疗) today.Researchers had a group of non-diabetic men and a group of men with type II diabetes, all more than 60 years of age, exercise on bicycles six times a week for three months. After the three months the doctors measured how much sugar the test subjects’ muscles could make use of as a measure for how well their insulin worked.Associate Professor Dr Flemming Dela of the Muscle Research Center said the tests demonstrated that the exercising diabetics had made as good use of insulin as the healthy non-diabetic persons. “This means that the insulin works just as well for both group. Physical exercise cannot cure people of diabetes, but it can eliminate almost all their symptoms. At the same time it can put off the point at which they have to begin taking insulin,” Dela said.Insulin is a hormone produced by the pancreas(胰腺) , controlling sugar in the body and is used against diabetes.Dela said that to achieve the desired effect diabetics need only exercise to the point where they begin to sweat, but that the activity has to be maintained since it wears off after five days without sufficient exercise.Most diabetics realize that they have to watch their diet while remaining unaware of the importance of exercise, Dela added. It can be seen from the passage that most diabetics are ignorant of （）
What does the man mean?（）
USP理论的要点是什么？
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