英语四级全真模拟题及答案1文档格式.docx

英语四级全真模拟题及答案1文档格式.docx

《英语四级全真模拟题及答案1文档格式.docx》由会员分享，可在线阅读，更多相关《英语四级全真模拟题及答案1文档格式.docx（19页珍藏版）》请在冰豆网上搜索。

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