单选题《复合题被拆开情况》 Why does social media trigger feelings of loneliness and inadequacy? Because instead of being real life, it is, for the most part, impression management, a way of marketing yourself, carefu

单选题31. The subject of safety must be placed at the top of the ______.

单选题《复合题被拆开情况》 Some people in the US have asserted that forgiving student loan debt is one way to stimulate the economy and give assistance to those in need. One government proposition is to eliminate $10

单选题《复合题被拆开情况》 Born from the accessibility of mass air travel, modern international tourism has been popularized as "holiday-making" in regions that offer comparative advantages of sand, sun and sea. Trav

单选题Questions 1 to 10 are based on the following passage.More than half of American adults____1____vitamin pills.Data from the National Health and Nutri-tion Examination Survey NHANES____2____a trend away

单选题[此试题无题干]

单选题Sugar—Friend VS EnemyASugar is everywhere.Its in our drinks, its in our foods, and its hidden in places we never would think of.Many would call sugar their friend in time of need, but i

单选题5. It suddenly occurred to him ______ he had left his keys in the office.

单选题. Now listen to the following recording and answer questions 16 to 19.1.

单选题. Questions 12 to 15 are based on the passage yon have just heard.4.

单选题Revitalising Credit SuisseATidjane Thiam is not the first non-Swiss cluef executive of Credit Suisse（瑞士信贷）.His American predecessor, Brady Dougan, held the job for eight years.But Mr.Dougan was an ins

单选题18. More than 85 percent of French Canada's population speaks French as a mother tongue and ______ to the Roman Catholic faith.

单选题Is There Anybody out There?AThis is the biggest question in the universe: are we alone? Philosophers have debated the ques-tion for millennium.When 16th-century Italian astronomer and Dominican friar

单选题. We all know that the normal human daily cycle of activity is of some 7-8 hours sleep alternating with some 16-17 hours wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified. The question is no mere academic one. The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8 a.m. one week, 8 a.m. to 4 p.m. the next, and 4 p.m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently. One answer would seem to be longer periods on each shift, a month, or even three months. Recent research by Bonier of the Netherlands, however, has shown that people on such systems will revert to their normal habits of sleep and wakefulness during the weekend and that this is quite enough to destroy any adaptation to night work built up during the week. The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night-shift workers was carried out by Brown in 1957. She found a high incidence of disturbed sleep and other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work. This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the strains of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People engaged in normal day-time work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only gradually go back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at intervals of two hours throughout the period of wakefulness it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far, however, such a form of selection does not seem to have been applied in practice.1. The study of sleep cycle can be of practical use to places where ______.

单选题. Not too many decades ago it seemed "obvious" both to the general public and to sociologists that modern society has changed people's natural relations, loosened their responsibilities to kin (亲戚) and neighbors, and substituted in their place superficial relationships with passing acquaintances. However, in recent years a growing body of research has revealed that the "obvious" is not true. It seems that if you are a city resident, you typically know a smaller proportion of your neighbors than you do if you are a resident of a smaller community. But, for the most part, this fact has few significant consequences. It does not necessarily follow that if you know few of your neighbors you will know no one else. Even in very large cities, people maintain close social ties within small, private social worlds. Indeed, the number and quality of meaningful relationships do not differ between more and less urban people. Small-town residents are more involved with kin than are big-city residents. Yet city dwellers compensate by developing friendships with people who share similar interests and activities. Urbanism may produce a different style of life, but the quality of life does not differ between town and city. Nor are residents of large communities any likelier to display psychological symptoms of stress or alienation, a feeling of not belonging, than are residents of smaller communities. However, city dwellers do worry more about crime, and this leads them to a distrust of strangers. These findings do not imply that urbanism makes little or no difference. If neighbors are strangers to one another, they are less likely to sweep the sidewalk of an elderly couple living next door or keep an eye out for young troublemakers. Moreover, as Wirth suggested, there may be a link between a community's population size and its social heterogeneity. For instance, sociologists have found much evidence that the size of a community is associated with bad behavior including gambling, drugs, etc. Large-city urbanites are also more likely than their small-town counterparts to have a cosmopolitan outlook, to display less responsibility to traditional kinship roles, to vote for leftist political candidates, and to be tolerant of nontraditional religious groups, unpopular political groups, and so-called undesirables. Everything considered, heterogeneity and unusual behavior seem to be outcomes of large population size.1. Which of the following statements best describes the organization of the first paragraph? ______

单选题. Questions 23 to 25 are based on the recording you have just heard.8.

单选题 The Internet

单选题20. The boy's foolish question ______ his mother who was busy with housework and had no interest in talking.