For this part, you are allowed 30 minutes to write a letter to invite a linguist from your department to be the guest speaker at a gathering of your club following the outline given below．You should write at least 120 words but no more than 180 words． 1．表示邀请 2．说明活动的性质、内容及嘉宾的任务 3．表达希望嘉宾出席的愿望

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中国人一直以自己是龙的 传人 (descendent)为豪。这种情感在中国文化和社会的各个方面都有所体现。从远古时代起，龙就被看作是具有庇佑能力并能影响人们生活的动物。古代的皇帝被看作是“真龙天子”，象征着尊严和权力。在民间流传着许多关于龙的传说和故事。还有各种与龙相关的民俗活动，其中最受欢迎的就是 赛龙舟 (Dragon Boat Race)。

在中国，人们见面时喜欢问：“你去哪儿?”或“你吃了吗?”大多数时候，人们并非真正想知道你要去哪里或吃饭了没有。实际上，那只是一种打招呼的方式。与西方的风俗相似，当你与一个陌生人开始交谈时，诸如天气、食物或爱好之类的话题可能是打破坚冰的不错选择。询问私人问题时应当慎重，但是聊些关于家乡、工作方面的话题则通常可以使谈话顺利进行。

GPS A) The Global Positioning System is a. space-based triangulation system using satellites and computers to measure positions anywhere on earth. It is first and foremost a defense system developed by the United States Department of Defense, and is referred to as the "Navigation Satellite Timing and Ranging Global Positioning System" or NAVSTAR GPS. The uniqueness of this navigational system is that it avoids the limitations of other land-based systems such as limited geographic coverage, lack of continuous 24-hour coverage, and the limited accuracies of other related navigational instruments. The high accuracies obtainable with the Global Positioning System also make it a precision survey instrument. GPS Components: the Space Segment, the Control Segment, and the User Segment. B) The Space Segment of the system consists of the GPS satellites. These space vehicles (SVs) send radio signals from space. The GPS Operational Constellation consists of 24 satellites that orbit the earth in 12 hours. There are often more than 24 operational satellites as new ones are launched to replace older satellites. The satellite orbits repeat almost the same ground track (as the earth turns beneath them) once each day. The orbit altitude is such that the satellites repeat the same track and area over any point approximately each 24 hours (4 minutes earlier each day). There are six orbital planes (with four SVs in each), equally spaced (60 degrees apart), and inclined at about fifty-five degrees with respect to the equatorial (赤道的) plane. This constellation provides the user with between five and eight SVs visible from any point on the earth. C) The Control Segment consists of a system of tracking stations located around the world. The Master Control facility is located at Schriever Air Force Base (formerly Falcon AFB) in Colorado. These monitor stations measure signals from the SVs which are incorporated into orbital models for each satellites. The models compute precise orbital data and SV clock corrections for each satellite. The Master Control station uploads orbital data and clock data to the SVs. The SVs then send subsets of the orbital ephemeris (星历表) data to GPS receivers over radio signals. D) The GPS User Segment consists of the GPS receivers and the user community. GPS receivers change SV signals into position, speed, and time estimates. Four satellites are required to compute the four dimensions of X, Y, Z (position) and Time. GPS receivers are used for navigation, positioning, time distribution, and other research. Navigation in three dimensions is the primary function of GPS. Navigation receivers are made for aircraft, ships, ground vehicles, and for hand carrying by individuals. Precise positioning is possible using GPS receivers at reference locations providing corrections and relative positioning data for remote receivers. Surveying, geodetic control, and plate tectonic studies are examples. E) Time and frequency distribution, based on the precise clocks on board the SVs and controlled by the monitor stations, is another use for GPS. Astronomical observatories, telecommunications facilities, and laboratory standards can be set to precise time signals or controlled to accurate frequencies by special purpose GPS receivers. Research projects have used GPS signals to measure atmospheric parameters. F) At present the system consists of 24 satellites at an altitude of about 20,000 km having an orbital inclination of 55 degrees. The orbits are almost circular and it takes 12 hours for a satellite to complete a pass around the Earth. GPS signals are broadcast from a cluster of 24 or more earth orbiting satellites. Because the GPS signals are derived from the atomic frequency standards on board each satellite, they are widely used as a reference for time synchronization and frequency adjustment. The real time positioning accuracy of a single receiver is normally up to 100 meters horizontally and 150 meters vertically. However, various methods have been developed which enable much higher accuracy (centimeter level). G) There are a variety of different types of GPS receivers on the market for commercial and public use. Prices range from $500 to $30,000, reflecting the accuracy and capabilities of the instruments. For the general outdoorsman, a good GPS receiver should have 8 satellite tracking capability and be capable of receiving the GPS satellite signals through forest covering in northern Ontario shield area; for the professional user, a minimum 8 satellite tracking capability, high memory capacity, differential GPS capability, and resistance to signal weakening under forest covering is essential; for the professional surveyor requiring high level precision and accuracy capability, they should assess the project or application for which the technology is to be used with the help of an unbiased consultant, in order to determine the most cost effective and appropriate instrument. H) Small hand held navigational units at relatively low cost allow boaters and hikers to know their position within a few hundred meters. This accuracy is sufficient for recreational use. A hand held or similar mapping unit at mid-range price that is linked to a fixed broadcast base station. These units allow utility companies, municipalities and others to locate various items (telephone poles, waterlines, valves) with a positional tolerance of several meters. This is suitable for some Geographical Information Systems (GIS) mapping purposes. I) GPS technology offers numerous benefits to law enforcement agencies of all types. For some agencies, the navigational capabilities offered by GPS enhance efficiency and safety. These navigational applications can be used to support a variety of policing and criminal justice functions. Other agencies use GPS positioning technologies to carry out special operations or to provide enhanced personnel safety. For example, using computerized maps of their rights given by law, cooperated with GPS, aviation personnel can determine location, speed and time. J) The positioning capabilities offered by GPS may also contribute to the success of specialized law enforcement operations such as in controlling vehicles. One such program operated in Minneapolis led to a 60% reduction in auto theft after only one month. The automatic vehicle location systems can not only provide efficiency of response and help ensure officer safety, but also provide officer with accurate information concerning the best response route to an incident. What's more, they can provide officers information that allows the closest patrol officers to be dispatched to a particular incident K) Advanced Transportation Management Systems (ATMS) are heavily dependant upon GPS technology to provide data about the road system. GPS allows for law enforcement personnel to clear roadway blockages to ensure the safety of motorist. Most people associate law enforcement with the prevention, reduction, and prosecution of criminal activity. In fact, a large portion of local law enforcement resources are involved in facilitating the movement of people and vehicles in a safe manner. In conclusion, large-volume commercial applications such as cellular phones, personal communication systems, and in-vehicle navigation systems will fuel continued development of these technologies. What was ultimately the domain of the Department of Defense is rapidly becoming available for business, private, and general government use. Policing and public safety in general, will benefit from these market forces. It is clear that there are a number of GPS applications for policing.

胡同(Hutong)是北京的一大特色，有着与北京城一样久远的历史。

中国经济发展的规模和速度令人瞩目。然而，中国仍面临着巨大的挑战。官方数据显示，中国今年的物价跟去年相比上涨了6．4％。除了物价上涨导致的问题，经济结构上的问题也有待解决。随着中国社会的发展和人们生活方式(lifestyle)的改变，转变经济模式的需求开始显现。这将要求去发展新兴产业，特别是服务业。现在中国领导人已开始着手解决这些问题了。

{{B}}Part II Listening Comprehension{{/B}}

造成这一结果的原因有很多，其中包括不断增长的机动车数量和工业品产量。

A Letter of Inquiry to Your Tutor For this part, you are allowed 30 minutes to write a letter of inquiry to Prof. Zhang, your tutor, to ask him for a comment on your graduate dissertation titled Analysis of Hamlet's Character. You should write at least 120 words but no more than 180 words.

很多人在选择车牌号码时会不惜花钱去选取他们认为吉利的数字。

{{B}}Section A{{/B}}

On Idol Worshipping 1．许多青少年将娱乐明星当作崇拜偶像 2．对此现象不同的人有不同的看法 3．我对此事的分析和看法

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Are Bad Economic Times Good for Health?[A] Most people are worried about the health of the economy. But does the economy also affect your health? It does, but not always in ways you might expect. The data on how an economic downturn influences an individual's health are surprisingly mixed. It's clear that long-term economic gains lead to improvements in a population's overall health, in developing and industrialized societies alike.[B] But whether the current economic downturn will take a toll on your own health depends, in part, on your health habits when times are good. And economic studies suggest that people tend not to take care of themselves in boom times—drinking too much (especially before driving), dining on fat-filled restaurant meals and skipping exercise and doctors' appointments because of work-related time commitments.[C] "The value of time is higher during good economic times," said Grant Miller, an assistant professor of medicine at Stanford. "So people work more and do less of the things that are good for them, like cooking at home and exercising: and people experience more stress due to the severity of hard work during booms."[D] Similar patterns have been seen in some developing nations. Dr. Miller, who is studying the effects of fluctuating coffee prices on health in Colombia, says that even though falling prices are bad for the economy, they appear to improve health and decrease death rates. When prices are low, laborers have more time to care for their children. "When coffee prices suddenly rise, people work harder on their coffee plots and spend less time doing things around the home, including things that are good for their children," he said. "Because the things that matter most for infant and child health in rural Colombia aren't expensive, but require a substantial amount of time—such as breast-feeding, bringing clean water from far away, taking your child to a distant health clinic for free vaccinations (接种疫苗) —infant and child death rates rise."[E] In this country, a similar effect appeared in the Dust Bowl during the Great Depression, according to a 2007 paper by Dr. Miller and colleagues in The Proceedings of the National Academy of Sciences. The data seem to contradict research in the 1970s suggesting that in hard times there are more deaths from heart disease, cirrhosis (肝硬化), suicide and murder, as well as more admissions to mental hospitals. But those findings have not been repeated, and several economists have pointed out flaws in the research.[F] In May 2000, the Quarterly Journal of Economics published a surprising paper called "Are Recessions Good for Your Health?" by Christopher J. Ruhm, professor of economics at the University of North Carolina, Greensboro, based on an analysis measuring death rates and health behavior against economic shifts and jobless rates from 1972 to 1991. Dr. Ruhm found that death rates declined sharply in the 1974 and 1982 recessions, and increased in the economic recovery of the 1980s. An increase of one percentage point in state unemployment rates correlated with a 0.5 percentage point decline in the death rate—or about 5 fewer deaths per 100,000 people. Over all, the death rate fell by more than 8 percent in the 20-year period of mostly economic decline, led by drops in heart disease and car crashes.[G] The economic downturn did appear to take a toll on factors having less to do with prevention and more to do with mental well-being and access to health care. For instance, cancer deaths rose 23 percent, and deaths from flu and pneumonia increased slightly. Suicides rose 2 percent, homicides 12 percent.[H] The issue that may matter most in an economic crisis is not related to jobs or income, but whether the slump widens the gap between rich and poor, and whether there is an adequate health safety net available to those who have lost their jobs and insurance. During a decade of economic recession in Japan that began in the 1990s, people who were unemployed were twice as likely to be in poor health as those with secure jobs. During Peru's severe economic crisis in the 1980s, infant deaths jumped 2.5 percentage points—about 17,000 more children who died as public health spending and social programs collapsed.[I] In August, researchers from the Free University of Amsterdam looked at health studies of twins in Denmark. They found that individuals bom in a recession were at higher risk for heart problems later in life and lived, on average, 15 months less than those born under better conditions. Gerard J. van den Berg, an economics professor who was a co-author of the study, said babies in poor households suffered the most in a recession, because their families lacked access to good health care. Poor economic conditions can also cause stress that may interfere with parent bonding and childhood development, he said. He noted that other studies had found that recessions can benefit babies by giving their parents more time at home.[J] "This scenario (情况) may be relevant for well-to-do families where one of the parents loses a job and the other still brings in enough money," he said. "But in a crisis where the family may have to face huge housing-cost losses and the household income is insufficient for adequate nutrition and health care, the disadvantageous effects of being born in a recession seem much more relevant."[K] In the USA, there are already signs of the economy's effect on health. In May, the market research firm Information Resources reported that 53 percent of consumers said they were cooking more than they did just six months before—in part, no doubt, because of the rising cost of prepared foods. At the same time, health insurance costs are rising. With premiums and co-payments, the average employee with insurance pays nearly one-third of medical costs—about twice as much as four years ago, according to Paul H. Keckley, executive director of the Deloitte Center for Health Solutions.[L] In the United States, which unlike other industrialized nations lacks a national health plan, the looming recession may take a greater toll. About 46 million Americans lack health insurance, Dr. Keckley says, and even among the 179 million who have it, an estimated 1 in 7 would be bankrupted by a single health crisis. The economic downturn "is not good news for the health care industry," he said. "There may be something positive, but I think this needs pondering."

BSection C/B

Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepictureandthenexpressyourviewsontheproblemofjob-seeking.Youshouldwriteatleast120wordsbutnomorethan180words.

Forthispart,youareallowed30minutestowriteashortessay.Youshouldstartyouressaywithabriefdescriptionofthepictureandthenexpressyourviewsonthecommitmentofonlinedealers.Youshouldwriteatleast120wordsbutnomorethan180words.

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For this part, you are allowed 30 minutes to write a short essay on the topic Stop Using Disposable Products. You should write at least 120 words but no more than 180 words following the outline given below:1．近年来人们广泛使用一次性产品。2．这种现象所带来的危害。3．我们该采取什么样的应对措施。