衡水市2019高考英语阅读理解三月天天练(6)及解析

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1、衡水市2019高考英语阅读理解三月天天练（6）及解析Illinois-WildlifeofficialsdiscoveredasingleAsiancarp(鲤鱼)ThursdayinacanalleadingtoLakeMichigan,whichindicatedthedestructivespeciesmightcometotheGreatLakes,IUinoisenvironmentalofficialssaid.EnvironmentalistsfearthatiftheAsianc

2、arpreachedthelakestheycouldstarveoutnativefishspeciesandputa$7billion-a-yearfishingindustryatstake.U.S.FishandWildlifeServiceofficialsfoundtheonly22-inchyoungcarpamongtensofthousandsofdeadfishinafishkiUoperationinthecanal,about40milesfromLakeMichigan

3、.“AsiancarpsareindeedknockingonthedooroftheGreatLakes.ThisistheclosesttoLakeMichiganthatanactualAsiancarpbodyhasbeenfound,”saidJohnRogner,assistantdirectoroftheIllinoisDepartmentofNaturalResources.Tensofthousandsofotherspeciesoffish,fromgizzardshadto

4、drum,floatedtothesurfaceofthewaterwayThursdayafterauthoritiesdumpedmorethan2,000gallonsoftoxins(毒素)intoanearlysix-milestretchofthewaterwaytheeveningbefore.ThetoxinsweredumpedwhileanelectricalbarriernormallyusedtopreventanyAsiancarpfromtheGreatLakeswa

5、stumedoffformaintenance.Thekilloperationwhichwillrequiretheremoval.ofanestimated200,000poundsofdeadfishtoalandfillbeganWednesdayandwasexpectedtolastuntilSaturday.TheAsiancarpwhichcangrowto4feetwereimportedbySouthernfishfarmsbutescapedintotheMississip

6、piRiverinlargenumbersdruingfloodinginthe1990sandhavebeenmakingtheirwaynorthwardeversince.ConcernaboutthespeciesofAsiancarpledtocallsevenbeforeTluusdaytoclosethewaterwayconnectingthelakestotheMississippi-anunprecedented(空前)stepthatcoulddisruptthemovem

7、entofmillionsoftonsofcoal,grainandothergoods.68.WhatdoestheunderlinedsentenceinParagraph2mean?A.AsiancarpsarecommonintheGreatLakes.B.AsiancarpsarecomingtotheGreatLakesC.AsiancarpsliketoliveintheGreatLakes.D.ManyotherfisharedeadbecauseofAsiancarps.69.

8、Whyisthefishoperationcarriedout?A.BecauseAsiancarpsmightendangerAmerican’sfishingindustry.B.Becauseabout200,000pormdsoffisharepoisoned.C.BecauseAsiancarpsescapeintotheMississippiRiver.D.Becausenativefishspeciesarestarvingout.70.Whatwillhappenifthewat