大學(xué)四級考試英語閱讀習(xí)題及答案

經(jīng)典word整理文檔，僅參考，雙擊此處可刪除頁眉頁腳。本資料屬于網(wǎng)絡(luò)整理，如有侵權(quán)，請聯(lián)系刪除，謝謝！大學(xué)四級考試英語閱讀習(xí)題(一)Thefoodweeatseemstohaveprofoundeffectsonourhealth.Althoughsciencehasmadeenormousstepsinmakingfoodmorefittoeat,ithas,atthesametime,mademanyfoodsunfittoeat.Someresearchhasshownthatperhapseightypercentofallhumanillnessesarerelatedtodietandfortypercentofcancerisrelatedtothedietaswell,especiallycancerofthecolon.Differentculturesaremorelikelytocausecertaindifferentillnessesbecauseofthefoodthatischaracteristicinthesecultures.Thatfoodisrelatedtoillnessisntoanewdiscovery.In1945,about35yearsago,governmentresearchersrealizedthatnitrates,commonlyusedtopreservecolorinmeats,andotherfoodadditivies,causedcancer.Yet,thesecarcinogenicadditivesremaininourfood,anditbecomesmoredifficultallthetimetoknowwhichthingsonthepackaginglabelsofprocessedfoodarehelpfulorharmful.Theadditiveswhichweeatarenotallsodirect.Farmersoftengivepenicillintobeefandlivinganimals,andbecauseofthis,penicillinhasbeenfoundinthemilkoftreatedcow.Sometimessimilardrugsaregiventoanimalsnotformedicalpurposes,butforfinancialreasons.Thefarmersaresimplytryingtofattentheanimalsinordertoobtainahigherpriceonthemarket.AlthoughtheFoodandDrugAdministration(FDA)hastriedrepeatedlytocontroltheseprocedures,thepracticescontinue.1.Whatisthebestpossibletitleofthepassage?a.DrugandFoodb.CancerandHealthc.FoodandHealthd.HealthandDrug2.WhichofthefollowingstatementsisNOTture?a.Drugsarealwaysgiventoanimalsformedicalreasonsb.Someoftheadditivesinourfoodareaddedtothefooditselfandsomearegiventothelivinganimalsc.Researchershaveknownaboutthepotentialdangersoffoodadditivesforoverthirty-fiveyears.d.Foodmaycausefortypercentofcancerinworld.3.Howhassciencedonesomethingharmfultomankind?a.Becauseofscience,diseasescausedbypollutedfoodhavenbeenvirtuallyeliminated.b.Ithascausedalackofinformationconcerningthevalueofc.Becauseoftheapplicationofscience,somepotentiallyharmfulfood.substanceshavebeenaddedtofood.d.Thescientistshavepreservedthecolorofmeats,butnotofvegetables.4.Whatarenitratesusedfor?a.Theypreserveflavorinpackagedfoods.b.Theypreservethecolorofmeats.c.Theyaretheobjectsofresearch.d.Theycausetheanimalstobecomefatter.5.Theword'carcinogenic'mostnearlymeans'_____'.a.trouble-makingb.color-retainingc.money-makingd.cancer-causing大學(xué)四級考試英語閱讀習(xí)題答案cacbd大學(xué)四級考試英語閱讀習(xí)題(二)Today,asineveryotherdayoftheyear,morethan3000U.S.adlescentswillsmoketheirfirstcigaretteontheirwaytobecomingregularsmokersasadults.Duringtheirlifetime,itcanbeexpectedthatofthese3000about23willbemurdered,30willdieintrafficaccidents,andnearly750willbekilledbyasmoking-relateddisease.Thenumberofdeathsattributedtocigarettesmokingoutweithtsallotherfactors,whethervoluntaryorinvoluntary,asacauseofdeath.Sincethelate1970s,whendailysmokingamonghighschoolseniorsreached30precent,smokingratesamongyouthhavedeclined.Whilethedeclineisimpressive,severalimportantissuesmustberaised.First,inthepastseveralyears,smokingratesamongyouthhavedeclinedverylittle.Second,inthelate1970s,smokingamongmalehighschoolseniorsexceededthatamongfemalebynearly10percent.Thestatisticisreversing.Third,severalrecentstudieshaveindicatehighschooldropoutshaveexcessivelyhighsmokingrates,asmuchas75percent.Finally,thouthsignificantdeclinesinadolescentsmokinghaveoccurredinthepastdecade,nodefinitereasonsforthedeclineexist.Withinthiscontext,theNaionalCancerInstiute(NCI)beganitscurrentefforttodeterminethemosteffecivemeasurestoreducesmokingleveslamongyouth.1.Accordingtotheauthor,thedeathsamongyoutharemainlycausedby_____.a.trafficaccidentsb.smoking-relateddeseasec.murderd.allofthese2.Everydaythereareover_____highschoolstrdentswhowillbecomeregularsmoker.a.75b.23c.30d.30003.By"dropout"theauthormeans______.a.studentswhofailedtheexaminationb.studentswholeftschoolc.studentswholosttheirwayd.studentswhoweredrivenoutofschool4.Thereasonfordecliningadolescentsmokingisthat________.a.NCIhastakeneffectivemeasuresb.smokingispreventedamonghighschoolseniorsc.therearemanysmokerswhohavediedofcancerd.noneofthese5.Whatisimpliedbutnotstatedbytheauthoristhat________.a.smokingrates