职称英语历年真题综合类A阅读理解职称英语历年真题综合类A阅读理解精选职称英语阅读在考试中占有分数的比例很大，拿下阅读基本上职称英语考试就成功了一半。下面是yjbys网小编提供给大家关于职称英语历年真题综合类A阅读理解精选，希望对大家的备考有所帮助。What'sKillingtheBatsFirstitwasbees.Nowitisbats.BiologistsinAmericaareworkinghardtodiscoverthecauseofthemysteriousdeathsoftensofthousandsofbatsinthenortheasternpartofthecountry.Mostofthebatsaffectedarethecommonlittlebrownbats(Myotislucifugus),butotherspecies,suchasthelong-earedbat,thesmall-footedhat,theeasternpipistrelle,andtheIndianabathavealsobeenaffected.Insomecases,morethan90percentofthebatpopulationshavedied.Onepossibilityisdisease.Awhitefungus(真菌)knownasfusariumhasbeenfoundonthenosesofbothlivinganddeadbats.However,scientistsdon'tknowifthefungusistheprimarycauseofdeath,asecondarycauseofdeath,ornotacauseatall,buttheresultofsomeotherconditions.Anotherpossiblecauseisalackoffood.Forexample,batstypicallyeatalargenumberofmoths(蛾),andinsomestatessuchasNewYork,thenumberofmothshasbeendeclininginrecentyears.Ifbatscan'teatenoughfood,theystarvetodeath.Stillotherscientistsbelievethatglobalwarmingistoblame.Warmertemperaturesinrecentyearshavebeenwakinguphibernating(冬眠)batsearlierthanusual.Ifbatsbreaktheirhibernationatthewrongtime,theymightnotfindtheirexpectedfoodsources.Theweathermightalsoturncoldagainandweakenorkillthebats.Scientistsmightnotagreeonthecausesofthebatdie-off,buttheydoagreeontheconsequences.Batsareanimportantpredatorofmosquitoes;asinglebrownbatcaneat1,000ormoreinsectsinanhour.Theyalsoeatbeetlesandotherinsectsthatdamageplantcrops.Iftherearen'tenoughbats,damagewillbegreatfromtheinsectstheyeat.Whilebatslivealongtimefortheirsize--thelittlebrownbatcanliveformorethan30years-afemalebathasonlyonebabyperyear,sobatpopulationsgrowslowly.ManybatspeciesintheUnitedStatesarealreadyprotectedorendangered.Howcanyouhelp?Donotdisturbsleepingornestingbats.Ifyoudiscoverbatethatseemtobesickorthataredead,contactyourlocalFish&WildlifeDepartmentwiththedetails.However,becarefulnottotouchtheanimals.31.Whatisthemainideaofthispassage?A.Al