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Onethingthetourbooksdon’ttellyouaboutLondonisthat2,000ofitsresidentsarefoxes.Theyranawayfromthecityaboutcenturiesagoafterdevelopersandpollutionmovedin.Butnowthattheenvironmentiscleaner,thefoxeshavecomehome,oneofthemanywildanimalsthathavemovedintourbanareasaroundtheworld. “Thenumberandvarietyofwildanimalsinurbanareasisincreasing,”saysGomerJones,presidentoftheNationalInstituteforUrbanWildlife,inColumbia,Maryland.AsurveyofthewildlifeinNewYork’sCentralParklastyeartalliedthespeciesofmammals,includingmuskrats,shrewsandflyingsquirrels.Asimilarsurveyconductedinthe1890scountedonlyfivespecies.Oneofthecountry’slargestpopulationsofraccoons(浣熊)nowlivesinWashingtonD.C.,andmoose(驼鹿)areregularlyseenwanderingintoMainetowns.Peregrinefalcons(游隼)divefromthewindowledgesofbuildingsinthelargestU.S.citiestopreyon(捕食)pigeons. Severalchangeshavebroughtwildanimalstothecities.Foremostisthatairandwaterqualityinmanycitieshasimprovedasaresultofthe1970spollution-controlefforts.Meanwhile,ruralareashavebeenbuiltup,leavingmanyanimalsontheedgesofsuburbs.Inaddition,urbanwildliferefuges(避难处)havebeencreated.TheGreaterLondonCouncillastyearspent￡750,000tobuylandandbuild10permanentwildliferefugesinthecity.Over1,000volunteershavedonatedmoneyandclearedrubblefromderelictlots.OneeveninglastyearafoxwasseenonWestminsterBridgelookingupatBigBen. Forperegrinefalcons,citiesareactuallysaferthanruralcliffdwellings(悬崖栖息地).By1970thebirdshaddiedouteastoftheMississippibecausetheDDThadmadetheireggstoothintosupportlife.Thatyear,scientistTomCadeofCornellUniversitybeganraisingthebirdsforreleaseincities,forcitiesaffordedabundantfood. Citiescanattractwildanimalswithoutturningthemharmful.Thetrickistocreatehabitatswheretheycanbeself-sufficientbutstillbeseenandappreciated.Suchhabitatscanevenbefunctional.InSanFrancisco,thelocalgovernmentistestingdifferentkindsofrainwatercontrolbasinstoseenotonlywhichonesretain(保持)thecleanestwaterbutwhichwillattractthemostbirds. 小题1:Thefirstparagraphsugges 陈善国回答：
小题1:A小题2:B小题3:C小题4:B小题5:A文章讨论的是动物重新出现在大城市了，并分析了原因。小题1:A推理题。通读第一段可知现在的环境适合动物的生活，很多以前消失的动物都重新出现。小题2:B细节题...
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