2019年6月大学英语四级阅读练习题：杀虫剂的潜在危害

2019年6月大学英语四级阅读练习题：杀虫剂的潜在危害2019年6月大学英语四级阅读200篇汇总Wheredopesticidesfitintothepictureofenvironmentaldisease?Wehaveseenthattheynowpollutesoil,waterandfood,thattheyhavethepowertomakeourstreamsfishlessandourgardensandwoodlandssilentandbirdless.Man,howevermuchhemayliketopretendthecontrary,ispartofnature.Canheescapeapollutionthatisnowsothoroughlydistributedthroughoutourworld：Weknowthatevensingleexposurestothesechemicals,iftheamountislargeenough,cancauseextremelyseverepoisoning.Butthisisnotthemajorproblem.Thesuddenillnessordeathoffarmers,farmworkers,andothersexposedtosufficientquantitiesofpesticidesisverysadandshouldnotoccur.Forthepopulationasawhole,wemustbemoreconcernedwiththedelayedeffectsofabsorbingsmallamountsofthepesticidesthatinvisiblypolluteourworld.Responsiblepublichealthofficialshavepointedoutthatthebiologicaleffectsofchemicalsarecumulativeoverlongperiodsoftime,andthatthedangertoindividualmaydependonthesumoftheexposuresreceivedthroughouthislifetime.Fortheseveryreasonsthedangeriseasilyignored.Itishumannaturetoshakeoffwhatmayseemtousathreatoffuturedisaster.Menarenaturallymostimpressedbydiseaseswhichhaveobvioussigns,saysawisephysician,DrReneDubos,yetsomeoftheirworstenemiesslowlyapproachthemunnoticed.练习题：Choosecorrectanswerstothequestion：1.WhichofthefollowingisclosestinmeaningtothesentenceMan…ispartofnature(Para.1,Lines3-4)?A.Manappearsindifferenttowhathappensinnature.B.Manactsasifhedoesnotbelongtonature.C.Mancanavoidtheeffectsofenvironmentalpollution.D.Mancanescapehisresponsibilitiesforenvironmentaleffectsofpesticides?2.Whatistheauthorsattitudetowardtheenvironmentaleffectsofpesticides?A.PessimisticB.IndifferentC.DefensiveD.Concerned3.Intheauthorsview,thesuddendeathcausedbyexposuretolargeamountsofpesticides_____.A.isnottheworstofthenegativeconsequencesresultingfromtheuseofpesticidesB.nowoccursmostfrequentlyamongallaccidentaldeathsC.hassharplyincreasedsoastobecomethecenterofpublicattentionD.isunavoidablebecausepeoplecantdowithoutpesticidesinfarming4.Peopletendtoignorethedelayedeffectsofexposuretochemicalbecause_____.A.limitedexposuretothemdoeslittleharmtopeopleshealthB.thepresentismoreimportantforthemthanthefutureC.thedangerdoesnotbecomeapparentimmediatelyD.humansarecapableofwithstandingsmallamountsofpoisoning5.ItcanbeconcludedfromDr.Dubosremarksthat_____.A.peoplefindinvisiblediseasesdifficulttodealwithB.attacksbyhiddenenemiestendtobefatalC.diseaseswithobvioussignsareeasytocureD.peopletendtooverlookhiddendangerscausedbypesticides1.[B]题干的句子是文章第1段第3句，这是一个带有插入语的简单句，contrary在此表示跟partofnature相反，所以答案为B。2.[D]第2段最后一句提到，我们必须更加注重吸收少量杀虫剂的潜在后果，它们正在不知不觉地污染我们的世界。所以，作者对杀虫剂对环境的影响注重且担忧,D符合题意。3.[A]第2段第2句提到，杀虫剂使人突然发病或者死亡是很令人难过的亊，对于人口整体来说，人类对杀虫剂长期累计的潜在后果的理解不足，才是最严重的问题，故选A。4.[C]根据第3段倒数第2句说的“对未来的灾难无动于衷是人的本性”以及最后一句说的绝大部分人只对有明显迹象的疾病予以注重”可知C正是人们忽视化学药物的潜在危害的原因，故选C。5.[D]Dubos博士话中“最可怕的敌人”指的是“杀虫剂引起的潜在危险”，博士话中的slowlyapproachthemunnoticed直接表明D准确。