CET4/6考前综合训练资料目录一、套题演练PP1-8Keys PP72-79二、专项训练PP9-63阅读专项训练PP9-25Keys PP80-86听力专项训练PP26-37训练 1 PP26-28,Keys PP87-90训练 2 PP39-31,Keys PP90-93训练 3 PP32-34,Keys PP93-97训练 4 PP35-37,Keys PP97-100写作专项训练PP38-45Keys PP101-108完形填空专项训练PP46-59Keys PP108-115翻译专项训练PP60-63Keys PP115三、综合串讲材料PP64-71Keys PP116-126一、套题演练大学英语四六级综合训练试题陈风华Part I Writing(30 minutes)Directions:For this part,you are allowed 30 minutes to write a short essay on the topic College StudentsLearning Budgeting You should write at least 120 words following the oulline given below in Chinese:1.大学生经常生活费不够用；2.造成这一现象的原因；3.学会理财很重要，大学生应该College Students Learning BudgetingPart II Reading Comprehension(Skimming and Scanning)(15 minutes)Directions:In this part,you will have 15 minutes to go over the passage quickly and answer the questions onAnswer Sheet 1.For questions 1-7,markY(for YES)if the statement agrees with the information given in the passage;N(for NO)if the statement contradicts the information given in the passage;NG(for NOT GIVEN)if the information is not given in the passage.For questions 8-10,complete the sentences with the information given in the passage.Will We Run Out of Water?Picture a“ghost ship“sinking into the sand,left to rot on dry land by a receding sea.Then imagine duststorms sweeping up toxic pesticides and chemical fertilizers from the dry seabed and spewing them acrosstowns and villages.Seem like a scene from a movie about the end of the world?For people living near the Aral Sea inCentral Asia,its all too real.Thirty years ago,government planners diverted the rivers that flow into the seain order to iirigate(provide water for)farmland.As a result,the sea has shrunk to half its original size,stranding ships on dry land.The seawater has tripled in salt content and become polluted,killing all 24 nativespecies of fish.Similar large-scale efforts to redirect water in other parts of the world have also ended in ecologicalcrisis,according to numerous environmental groups.But many countries continue to build massive dams andirrigation systems,even though such projects can create more problems than they fix.Why?People in manyparts of the world are desperate for water,and more people will need more water in the next century.“Growing populations will worsen problems with water,says Peter H.Gleick,an environmentalscientist at the Pacific Institute for studies in Development,Environment,and Security,a researchorganization in California.He fears that by the year 2025,as many as one third of the worlds projected 8.3billion people will suffer from water shortages.Where Water GoesOnly 2.5 percent of all water on Earth is freshwater,water suitable for drinking and growing food,saysSandra Postel,director of the Global Water Policy Project in Amherst,Mass.Two 1hlids of this feshw ateris locked in glaciers and ice caps.In fact,only a tiny percentage of freshwater is part of the water cycle,inwhich water evaporates and rises into the atmosphere,then condenses and falls back to Earth asprecipitation(rain or snow).Some precipitation runs off land to lakes and oceans,and some becomes groundwater,water that seepsinto the earth.Much of this renewable freshwater ends up in remote places like the Amazon river basin inBrazil,where few people live.In fact,the worlds population has access to only 12,500 cubic kilometers offreshwater-about the amount of water in Lake Superior.And people use half of this amount already.Ifwater demand continues to climb rapidly,“says Postel,“there will be severe shortages and damage to theaquatic environment.Close to HomeWater woes may seem remote to people living in rich countries like the United States.But Americanscould face serious water shortages,too especially in areas that rely on groundwater.Groundwateraccumulates in aquifers,layers of sand and gravel that lie between soil and bedrock.(For every liter ofsurface water,more than 90 liters are hidden underground.)Although the United States has large aquifers,farmers,ranchers,and cities are tapping many of them for water faster than nature can replenish it.Innorthwest Texas,for example,over pumping has shrunk ground water supplies by 25 percent,according toPostel.Americans may face even more urgent problems from pollution.Drinking water in the United States isgenerally safe and meets high standards.Nevertheless,one in five Americans every day unknowingly drinkstap water contaminated with bacteria and chemical wastes,according to the Environmental Protection Agency.In Milwaukee,400,000 people fell ill in 1993 after drinking tap water tainted with cryptosporidium,amicrobe that causes fever,diarrhea and vomiting.The SourceWhere do contaminants come from?In developing countries,people dump raw sewage into the samestreams and rivers from which they draw water for drinking and cooking;about 250 million people a year getsick from water borne diseases.In developed countries,manufacturers use 100,000 chemical compounds to make a wide range ofproducts.Toxic chemicals pollute water when relea。