英语四级全真模拟题及答案1文档格式.docx
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英语四级全真模拟题及答案1文档格式.docx
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3.我的看法。
提示:
在实考试卷中,该试题在答题卡1上。
Aid--EducationinChina
PartⅡReadingprehension<
SkimmingandScanning>
<
15minutes>
Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1-7,mark
Y<
forYES>
ifthestatementagreeswiththeinformationgiveninthepassage;
N<
forNO>
ifthestatementcontradictstheinformationgiveninthepassage;
NG<
forNOTGIVEN>
iftheinformationisnotgiveninthepassage.
Forquestions8-10,pletethesentenceswithinformationgiveninthepassage.
WillWeRunOutofWater?
Picturea"
ghostship"
sinkingintothesand,lefttorotondrylandbyarecedingsea.Thenimagineduststormssweepinguptoxicpesticidesandchemicalfertilizersfromthedryseabedandspewingthemacrosstownsandvillages.
Seemlikeascenefromamovieabouttheendoftheworld?
ForpeoplelivingneartheAralsea<
咸海>
inCentralAsia,it’salltooreal.Thirtyyearsago,governmentplannersdivertedtheriversthatflowintotheseainordertoirrigate<
providewaterfor>
farmland.Asaresult,theseahasshrunktohalfitsoriginalsize,stranding<
使搁浅>
shipsondryland.Theseawaterhastripledinsaltcontentandbeepolluted,killingall24nativespeciesoffish.
Similarlarge--scaleeffortstoredirectwaterinotherpartsoftheworldhavealsoendedinecologicalcrisis,accordingtonumerousenvironmentalgroups.Butmanycountriescontinuetobuildmassivedamsandirrigationsystems,eventhoughsuchprojectscancreatemoreproblemsthantheyfix.Why?
Peopleinmanypartsoftheworldaredesperateforwater,andmorepeoplewillneedmorewaterinthenextcentury.
"
Growingpopulationswillworsenproblemswithwater,"
saysPeterH.Gleick,anenvironmentalscientistatthePacificInstituteforstudiesinDevelopment,Environment,andSecurity,aresearchorganizationinCalifornia.Hefearsthatbytheyear2025,asmanyasone--thirdoftheworld’sprojected<
预测的>
8.3billionpeoplewillsufferfromwatershortages.
WHEREWATERGOES
Only2.5percentofallwateronEarthisfreshwater,watersuitablefordrinkingandgrowingfood,saysSandraPostel,directoroftheGlobalWaterPolicyProjectinAmherst,Mass.Two--thirdsofthisfreshwaterislockedinglaciers<
冰山>
andicecaps〔冰盖〕.Infact,onlyatinypercentageoffreshwaterispartofthewatercycle,inwhichwaterevaporatesandrisesintotheatmosphere,thencondensesandfallsbacktoEarthasprecipitation<
rainorsnow>
.
Someprecipitationrunsofflandtolakesandoceans,andsomebeesgroundwater,waterthatseepsintotheearth.MuchofthisrenewablefreshwaterendsupinremoteplacesliketheAmazonriverbasininBrazil,wherefewpeoplelive.Infact,theworld’spopulationhasaccesstoonly12,500cubickilometersoffreshwater—abouttheamountofwaterinLakeSuperior<
苏必利尔湖>
.Andpeopleusehalfofthisamountalready."
Ifwaterdemandcontinuestoclimbrapidly,"
saysPostel,"
therewillbesevereshortagesanddamagetotheaquatic<
水的>
environment."
CLOSETOHOME
Waterwoes<
灾难>
mayseemremotetopeoplelivinginrichcountriesliketheUnitedStates.ButAmericanscouldfaceseriouswatershortages,tooespeciallyinareasthatrelyongroundwater.Groundwateraccumulatesinaquifers<
地下蓄水层>
layersofsandandgravelthatliebetweensoilandbedrock.<
Foreveryliterofsurfacewater,morethan90litersarehiddenunderground.>
AlthoughtheUnitedStateshaslargeaquifers,farmers,ranchers,andcitiesaretappingmanyofthemforwaterfasterthannaturecanreplenish<
补充>
it.InnorthwestTexas,forexample,overpumpinghasshrunkgroundwatersuppliesby25percent,accordingtoPostel.
Americansmayfaceevenmoreurgentproblemsfrompollution.DrinkingwaterintheUnitedStatesisgenerallysafeandmeetshighstandards.Nevertheless,oneinfiveAmericanseverydayunknowinglydrinkstapwatercontaminatedwithbacteriaandchemicalwastes,accordingtotheEnvironmentalProtectionAgency.InMilwaukee,400,000peoplefellillin1993afterdrinkingtapwatertaintedwithcryptosporidium<
隐孢子虫>
amicrobe<
微生物>
thatcausesfever,diarrhea<
腹泻>
andvomiting.
THESOURCE
Wheresocontaminantsefrom?
Indevelopingcountries,peopledumpraw<
未经处理的>
sewage<
污水>
intothesamestreamsandriversfromwhichtheydrawwaterfordrinkingandcooking;
about250millionpeopleayeargetsickfromwaterborne<
饮水传染的>
diseases.
Indevelopedcountries,manufacturersuse100,000chemicalpoundstomakeawiderangeofproducts.Toxicchemicalspollutewaterwhenreleaseduntreatedintoriversandlakes.<
Certainpounds,suchas
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