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2019-2020年高考英语一轮复习第一部分教材课文要点Module3TheViolenceofNature夯基提能作业外研版必修Ⅰ.阅读理解 阅读下面短文从每题所给的A、B、C和D四个选项中选出最佳选项xx课标全国ⅢC AfteryearsofheateddebategraywolveswerereintroducedtoYellowstoneNationalPark.FourteenwolveswerecaughtinCanadaandtransportedtothepark.BylastyeartheYellowstonewolfpopulationhadgrowntomorethan170wolves.GraywolvesoncewereseenhereandthereintheYellowstoneareaandmuchofthecontinentalUnitedStatesbuttheyweregraduallydisplacedbyhumandevelopment.Bythe1920swolveshadpracticallydisappearedfromtheYellowstonearea.TheywentfarthernorthintothedeepforestsofCanadawheretherewerefewerhumansaround.Thedisappearanceofthewolveshadmanyunexpectedresults.Deerandelkpopulations—majorfoodsources来源forthewolf—grewrapidly.Theseanimalsconsumedlargeamountsofvegetation植被whichreducedplantdiversityinthepark.Intheabsenceofwolvescoyotepopulationsalsogrewquickly.Theco...。