2022届高考英语一轮复习课时作业（九）必修③Unit 3 Back to the past课时作业（含解析）牛津译林版-第一文库

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课时作业(九)必修③Unit3BacktothepastⅠ.阅读理解A[2021·成都市高三检测]Thismorningwe'regoingtoheadoffdownintothewetland,averyspecifickindofwetlandcalledthePrairiefen.YoucanfindNateFullercountingbutterflies.TheSarettNatureCenterneedsanaccuratecountofMitchell'ssatyrbutterfliestohelppreserveoneoftheirlastknownhabitats.They'reveryparticularaboutthekindofhabitatwheretheycanlive,whichispartofwhatmakesthemsorareandamazingindicatorsforourwaterquality.Today,SarettexpertAshleyColeWickwithMichigan'sNaturalFeaturesInventoryhelpsFullercount.Shesays,“WhenIfirststartedworkingonthebutterflyin2013,wehad18populationsandin2019,wehad10.”TheMitchell'ssatyrbutterflywentontheendangeredspecieslistin1991.Initiallyitwasthoughtthatlossofwetlandscontributedtotheirdecline.Fullersays,“It'snotjusthabitatavailability.Thequantityandqualityofgroundwatercomingintothesewetlandsseemtobeachallengeforthebutterfly.Nothinghasallbeensortedoutexactly.”Whilethedeclineislikelyacombinationoffactors,thefactthatwaterqualitymightcontributeisalarmingbecausethewetlandsaretheheadwatersfortheMidwest'sriversandstreams.Acaptivebreeding(人工繁殖)programwasstartedfouryearsagoattheToledoZootohelpgettothebottomofthemystery.TodayDirectorRyanWalshwhoheadstheprogramsaysit'sbeentheonlysuccessfulcaptivebreedingprogram.Thecaterpillars(毛毛虫)spentthewinterinaspecialweathercontrolroomthathelpeddeterminetheMitchell'ssatyrsdon'tdowellbelow4.4degreesCelsius.Withthatknowledge,theprogramproduced1,300neweggs,adevelopmentthatmaygoalongwaytowardrestoringthepopulation.Andifallgoeswell,mayonedaytheMitchell'ssatyrbutterflyearnaticketofftheendangeredspecieslist.1．Whataretheindicatorsforthewaterquality?A．Thehabitats.B．Thebutterflies.C．Thewetlands.D．Theexperts.2．Whatisthemainideaofthethirdparagraph?A．Theimportanceofwaterquality.B．Actionstakentoprotectthebutterflies.C．Thereasonswhythenumberofbutterfliesdeclines.D．Thenaturalconditionsforthebutterflies.3．Whatdoestheunderlinedword“restoring”inParagraph4mostprobablymean?A．Preserving.B．Increasing.C．Recovering.D