大学英语六级-8及答案解析.doc
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1、大学英语六级-8 及答案解析(总分:577.80,做题时间:90 分钟)一、Part Writing(总题数:1,分数:106.00)1.掌心生理健康的重要性2. 学校应该怎样做3. 学生自己应该怎样做How to Improve Psychological Health?(分数:106.00)_二、Part Reading Compr(总题数:1,分数:10.00)Water WarningsUrgent Tasks for ChinaWater has long been considered an inexhaustible resource. But China is facing a
2、n unmistakable water crisis, and recently, because of increasingly hard-to-miss symptoms of the shortage, people in all parts of society are beginning to realize just how precious commodity water really is.At first glance, it seems like there should be enough: Chinas total supply of freshwater resou
3、rces ranks sixth in the world, after Brazil, Russia, Canada, the United States and Indonesia. But despite this apparent advantage, Chinas per capita water resources fall far below the world average of 7,600 cubic meters per-capita due to the countrys enormous population size. Chinas per-capita amoun
4、t of 2,200 cubic meters is expected to decrease further as the country continues its rapid economic growth and population expansion.“Without excessively exploiting underground water, China has a water gap of nearly 40 billion cubic meters. The countrys 320 million rural people arent able to drink sa
5、fe water and over 400 cities dont have sufficient water supply, 110 of which face a serious shortage,“ Wang Shucheng, Minister of Water Resources, said recently.Some water resources experts warn that the current shortage is no more than a warning signal, with a greater crisis yet to come. The Minist
6、ry of Water Resources issued a water crisis warning as early as November 2001. At the time it said that when the Chinese population peaks at 1.6 billion in 2030, Chinas per-capita water resources could fall to 1,700 cubic meters, the internationally acknowledged level below which an area is said to
7、be experiencing “water stress“. Poor Natural ConditionsScant water resources to slake the thirsts of a population of 1.3 billion, and the uneven geographical distribution of these resources, form the basis of water conditions in China.Affected by monsoons (季候风), Chinas precipitation (降水量) varies con
8、siderably among differentseasons. The time of precipitation overlaps (交迭) with the hottest seasons, mostly in summer and autumn and scarcely in winter and spring. Generally, regions with the lowest precipitation levels receive it concentratedly only at certain times of the year, which easily gives r
9、ise to drought in spring and flooding in summer. Meanwhile, two thirds of Chinas water resources is comprised of runoff flooding, which means rivers often flood in the rainy season and dry up at other times.Chinas water resources are also distributed geographically unevenly, inconsistent with the di
10、stribution of land, mineral resources and productivity. Generally, water resources are concentrated in the southern and eastern parts of the country, and in mountainous areas. Annual precipitation amounts vary from more than 3,000 millimeters in the southeast to less than 50 millimeters in the north
11、west.China is prone to floods and droughts, such-as the severe drought that hit Chongqing and Sichuan in southwest China this summer, the countrys worst in 50 years. While per capita water resources in some areas of the north approach the level of the driest countries in the world, the water-rich so
12、uth often suffers from seasonal droughts, which adversely affects rice, the major crop reliant on watering, as well as other cash crops. The last two decades have seen a nominal change in the countrys surface water resources and total water resources. Yet clue to factors such as global climate chang
13、e and river drainage, and total water resources in south China are rising while water resources in the north are falling significantly. A Series of Measures Adopted by Chinese GovernmentAgainst these difficult conditions, the Chinese Government has taken a series of measures to try and guarantee the
14、 basic water demands necessary for daily life and social and economic development. Since the founding of the Peoples Republic of China in 1949, the state has built a total of 85,000 reservoirs, with a total reserve capacity of over 500 billion cubic meters.Recently the government began to restore th
15、e longest canal in the world, built 1,400 years ago. The Grand Canal, which starts from the northern end of Beijing and ends in the southeastern city of Hang Zhou, near Shanghai, still runs today for 1,794 kilometers.As well, the government has initiated a plan to build new canals to channel water f
16、rom south to north, though the project also involves land requisition and the resettlement of people living along some parts of the proposed canals. The south to north water transfer project, Chinas largest ever water project, involves an estimated investment of 500 billion Yuan and proposes to move
17、 44 billion cubic meters of water per year through three transfer canals, from the Yangtze River Basin to north China.Serious WasteFor a long time, the phenomena of serious water shortage and low efficiency in water usage, or even waste of water, have coexisted in China.In terms of efficiency of wat
18、er usage in agriculture, Chinas average grain output per cubic meter of irrigation water is about 1 kilogram while that of advanced countries is 2.5 to 3 kilograms. For the time being, the majority of Chinas farmland is continuing to adopt the old method of flood irrigation. The amount of farmland u
19、sing water conservation technologies in irrigation accounts for just 35 percent of the effectively irrigated farmland, as compared to over 80 percent in some developed countries.In terms of water efficiency in industry, the major problem is a low recycling rate. Statistics from 2004 show that Chinas
20、 water consumption per 10,000 yuan worth of CDP was 399 cubic meters, four times the world average level and eight times that of industrialized countries; for 10,000 yuan worth of added industrial value, Chinas water consumption was 196 cubic meters and Chinas recycling rate of industrial water was
21、between 60 to 65 percent, while the figures for industrialized countries were below 50 cubic meters and 80 to 85 percent respectively.The waste of water is particularly serious in peoples daily lives. A large amount of urban wastewater from washing cars, watering grass or washing hair in salons flow
22、s away without recycling. According to rough estimates, 20 percent of Chinas urban tap water leaks due to aging pipes, which is more than double the amount in cities of developed countries. More and more Chinese people are drinking purified water instead of boiled tap water out of health concerns or
23、 for the sake of convenience. But few people know that some purified water manufacturers use outdated equipment and technology, meaning that only 1 ton of purified water is produced from 3 to 4 tons of source water.Besides water waste, overuse of water is also exerting strains on resources. Some reg
24、ions in northern China are actually using water required by the natural environment and ecological systems to sustain social and economic development. The number of cities and well irrigation areas in the countryside, which excessively exploit ground water, has grown from 56 at the beginning of the
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