考研数学三多元函数微积分学一doc.docx

1、考研数学三多元函数微积分学一doc考研数学三-多元函数微积分学(一)(总分：100.00，做题时间：90分钟)一、Section Use of Eng(总题数：1，分数：10.00)The mass media is a big part of our culture, yet it can also be a helper, adviser and teacher to our young generation. The mass media affects the lives of our young by acting as a (an) (1) for a number of inst

2、itutions and social contacts. In this way, it (2) a variety of functions in human life. The time spent in front of the television screen is usually at the (3) of leisure: there is less time for games, amusement and rest. (4) by what is happening on the screen, children not only imitate what they see

3、 but directly (5) themselves with different characters. Americans have been concerned about the (6) of violence in the media and its (7) harm to children and adolescents for at least forty years. During this period, new media (8) , such as video games, cable television, music videos, and the Interne

4、t. As they continue to gain popularity, these media, (9) television, (10) public concern and research attention. Another large societal concern on our young generation (11) by the media, is body image. (12) forces can influence body image positively or negatively. (13) one, societaland cultural norm

5、s and mass media marketing (14) our concepts of beauty. In the mass media, the images of (15) beauty fill magazines and newspapers, (16) from our televisions and entertain us (17) the movies. Even in advertising, the mass media (18) on accepted cultural values of thinness and fitness for commercial

6、gain. Young adults are presented with a (19) defined standard of attractiveness, a(n) (20) that carries unrealistic physical expectations.（分数：10.00）(1).A alternative B preference C substitute D representative（分数：0.50）A.B.C.D.(2).A accomplishes B fulfills C provides D suffices（分数：0.50）A.B.C.D.(3).A r

7、isk B mercy C height D expense（分数：0.50）A.B.C.D.(4).A Absorbed B Attracted C Aroused D Addicted（分数：0.50）A.B.C.D.(5).A identify B recognize C unify D equate（分数：0.50）A.B.C.D.(6).A abundance B incidence C prevalence D recurrence（分数：0.50）A.B.C.D.(7).A disposed B hidden C implicit D potential（分数：0.50）A.B.

8、C.D.(8).A merged B emerged C immerged D submerged（分数：0.50）A.B.C.D.(9).A apart from B much as C but for D along with（分数：0.50）A.B.C.D.(10).A promote B propel C prompt D prosper（分数：0.50）A.B.C.D.(11).A inspired B imposed C delivered D contributed（分数：0.50）A.B.C.D.(12).A External B Exterior C Explicit D E

9、xposed（分数：0.50）A.B.C.D.(13).A As B At C For D In（分数：0.50）A.B.C.D.(14).A mark B effect C impact D shock（分数：0.50）A.B.C.D.(15).A generalized B regularized C standardized D categorized（分数：0.50）A.B.C.D.(16).A boom B bottom C brim D beam（分数：0.50）A.B.C.D.(17).A over B with C on D at（分数：0.50）A.B.C.D.(18).A

10、play B take C profit D resort（分数：0.50）A.B.C.D.(19).A barely B carefully C narrowly D subjectively（分数：0.50）A.B.C.D.(20).A ideal B image C stereotype D criterion（分数：0.50）A.B.C.D.二、Section Reading Co(总题数：0，分数：0.00)三、Part A(总题数：0，分数：0.00)四、Text 1(总题数：1，分数：10.00)Children attending schools located in high

11、-traffic zones have a 45 percent increased risk of developing asthma, even though time spent at school only accounts for about one-third of a childs waking hours, according to new research. Asthma is the most common chronic childhood illness in developed countries and has been linked to environmenta

12、l factors such as traffic-related air pollution. While residential traffic-related pollution has been associated with asthma, there has been little study of the effects of traffic exposure at school on new onset asthma, says Rob McConnell, professor of preventive medicine at USCs Keck School of Medi

13、cine. Exposure to pollution at locations other than home, especially where children spend a large portion of their day and may engage in physical activity, appears to influence asthma risk as well. The study appears online in the journal Environmental Health Perspectives. The study drew upon data fr

14、om the Childrens Health Study (CHS), a longitudinal study of children in Southern California communities that was designed to investigate the chronic effects of air pollution on respiratory health. Using a cohort of 2 497 kindergarten and first grade children who were asthma-free when they entered t

15、he study, researchers examined the relationship of local traffic around schools and homes to diagnosis new onset asthma that occurred during three years of follow-up. Traffic-related pollution exposure was assessed based on a model that took into account traffic volume, distance to major roadways fr

16、om home and school and local weather conditions. Regional ambient ozone, nitrogen dioxide (二氧化氮) and particulate matter were measured continuously at one central site in each of the 13 study communities. The design allowed investigators to examine the joint effects of local traffic-related pollution

17、 exposure at school and at home and of regional pollution exposure affecting the entire community. Researchers found 120 cases of new asthma. The risk associated with traffic-related pollution exposure at schools was almost as high as for residential exposure, and combined exposure accounting for ti

18、me spent at home and at school had a slightly larger effect. Although children spend less time at school than at home, physical education, and other activities that take place at school may increase ventilation rates and the dose of pollutants getting into the lungs, McConnell notes. Traffic-related

19、 pollutant levels may also be higher during the morning hours when children are arriving at school. Despite a state law that prohibits school districts from building campuses within 500 feet of a freeway, many Southern California schools are located near high-traffic areas, including busy surface st

20、reets. Its important to understand how these micro-environments where children spent a lot of their time outside of the home are impacting their health, McConnell says. Policies that reduce exposure to high-traffic environments may help to prevent this disease. The study was funded by grants from th

21、e National Institute of Environmental Health Sciences, the US Environmental Protection Agency, the South Coast Air Quality Management District, and the Hastings Foundation.（分数：10.00）(1).Which one is NOT the reason that children increase risk of developing asthma? A There exists traffic-related pollu

22、tion. B Schools are located in heavy-traffic areas. C Children are frequently exposed to pollution. D The vehicles increase rapidly.（分数：2.00）A.B.C.D.(2).What kind of illness does asthma belong to? A Mental sickness. B Respiratory disease. C Influenza. D Infectious disease.（分数：2.00）A.B.C.D.(3).We can

23、 infer from McConnells view that_. A there has been little study of the residential traffic-related pollution B activities that take place at school may increase the risk of asthma C traffic-related pollutant level is lower during the morning hours D frequent exposure to outdoors appears to influenc

24、e the risk of asthma（分数：2.00）A.B.C.D.(4).The method of preventing asthma is to_. A reduce exposure to schools B do more activities at home C reduce exposure to heavy traffic zones D understand the micro-environments（分数：2.00）A.B.C.D.(5).Which of the following is TRUE according to the text? A In South

25、ern California, many schools are located near heavy traffic zones. B The study was carried out by many organizations. C Rob McConnell is the leader of the study. D Asthma is the most common chronic childhood illness around the world.（分数：2.00）A.B.C.D.五、Text 2(总题数：1，分数：10.00)It is no longer just dirty

26、 blue-collar jobs in manufacturing that are being sucked offshore but also white-collar service jobs, which used to be considered safe from foreign competition. Telecoms charges have tumbled, allowing workers in far-flung locations to be connected cheaply to customers in the developed world. This ha

27、s made it possible to offshore services that were once non-tradable. Morgan Stanleys Mr. Roach has been drawing attention to the fact that the global labour arbitrage is moving rapidly to the better kinds of jobs. It is no longer just basic data processing and call centres that are being outsourced

28、to low-wage countries, but also software programming, medical diagnostics, engineering design, law, accounting, finance and business consulting. These can now be delivered electronically from anywhere in the world, exposing skilled white-collar workers to greater competition.The standard retort to s

29、uch arguments is that outsourcing abroad is too small to matter much. So far fewer than lm American service-sector jobs have been lost to off-shoring. Forrester Research forecasts that by 2015 a total of 3.4m jobs in services will have moved abroad, but that is tiny compared with the 30m jobs destro

30、yed and created in America every year. The trouble is that such studies allow only for the sorts of jobs that are already being off-shored, when in reality the proportion of jobs that can be moved will rise as IT advances and education improves in emerging economies.Alan Blinder, an economist at Pri

31、nceton University, believes that most economists are underestimating the disruptive effects of off-shoring, and that in future two to three times as many service jobs will be susceptible to off-shoring as in manufacturing. This would imply that at least 30% of all jobs might be at risk. In practice the number of jobs off-shored to China or Ind