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[单选题]Directions:Thereare3passagesinthissection.Eachpassageisfollowedby5questionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet.Text1Engineeringstudentsaresupposedtobeexamplesofpracticality(实用性)andrationality(理性),butwhenitcomestomycollegeeducationIamanidealistandafool.InhighschoolIwantedtobeanelectricalengineerand,ofcourse,anysensiblestudentwithmyaimswouldhavechosenacollegewithalargeengineeringdepartment,famousreputationandlotsofgoodlabsandresearchequipment.Butthat’snotwhatIdid.Ichosetostudyengineeringatasmallliberal-arts(文科)universitythatdoesn’tevenofferamajorinelectricalengineering.Obviously,thiswasnotapracticalchoice;Icamehereformorenoblereasons.Iwantedabroadeducationthatwouldprovidemewithflexibilityandavaluesystemtoguidemeinmycareer.Iwantedtoopenmyeyesandexpandmyvisionbyinteractingwithpeoplewhoweren’tstudyingscienceorengineering.Myparents,teachersandotheradultspraisedmeforsuchawisechoice.TheytoldmeIwaswiseandmaturebeyondmy18years,andIbelievedthem.IheadedofftothecollegeandsureIwasgoingtohaveanadvantageoverthosestudentswhowenttobigengineering"factories"wheretheydidn’tcareifyouhadvaluesorwereflexible.Iwasgoingtobeacompleteengineer:technicalgeniusandsensitivehumanistallinone.NowI’mnotsosure.Somewherealongthewaymynobleideascrashedintoreality,asallnobleideasfinallydo.Afterthreeyearsofstrugglingtobalancemath,physicsandengineeringcourseswithliberal-artscourses,Ihavelearnedtherearereasonswhyfewengineeringstudentstrytoreconcileengineeringwithliberal-artscoursesincollege.Therealitythathasblockedmypathtobecomethetypicalsuccessfulstudentisthatengineeringandtheliberalartssimplydon’tmixaseasilyasIsupposedinhighschool.Individuallytheyshapeapersoninverydifferentways;togethertheythreatentoconfuse.Thestruggletoreconcilethetwofieldsofstudyisdifficult.1.Whydidtheauthorchoosetostudyengineeringatasmallliberal-artsuniversity?
[单选题]一、阅读理解单项选择题Waterproblemsinthefuturewillbecomemoreintenseandmorecomplex.Ourincreasingpopulationwilltremendouslyincreaseurbanwastes,primarilysewage.Ontheotherhand,increasingdemandsforwaterwilldecreasesubstantiallytheamountofwateravailablefordilutingwastes.Rapidlyexpandingindustrieswhichinvolvemoreandmorecomplexchemicalprocesseswillproducelargevolumesofliquidwastes,andmanyofthesewillcontainchemicalswhicharepoisonous.Tofeedourrapidlyexpandingpopulation,agriculturewillhavetobeintensified.Thiswillinvolveever-increasingquantitiesofagriculturechemicals.Fromthis,itisapparentthatdrasticstepsmustbetakenimmediatelytodevelopcorrectivemeasuresforthepollutionproblem.Therearetwowaysbywhichthispollutionproblemcanbelessened.Thefirstrelatestothetreatmentofwastestodecreasetheirpollutionhazard.Thisinvolvestheprocessingofsolidwastes"priorto"disposalandthetreatmentofliquidwastes,oreffluents(废料),topermitthereuseofthewaterorbestreducepollutionuponfinaldisposal.  Asecondapproachistodevelopaneconomicuseforallorapartofthewastes.Farmmanureisspreadinfieldsasanutrient(养料)ororganicsupplement.Effluentsfromsewagedisposalplantsareusedinsomeareasbothforirrigationandforthenutrientscontained.Effluentsfromotherprocessingplantsmayalsobeusedasasupplementalsourceofwater.Manyindustries,suchasmeatandpoultryprocessingplants,arecurrentlyconvertingformerwasteproductionintomarketablebyproducts.Otherindustrieshavepotentialeconomicusesfortheirwasteproducts.1.Thepurposeofthispassageis_______. 
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