2018年高考英语一轮复习 unit 5 theme parks高考题（含解析）新人教版必修4

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1、Unit5Themeparks2017年新课标卷III·C体裁话题词数难度建议时间说明文美国黄石公园重新引进灰狼295★★★☆☆7’Afteryearsofheateddebate,graywolveswerereintroducedtoYellowstoneNationalPark.FourteenwolveswerecaughtinCanadaandtransportedtothepark.Bylastyear,theYellowstonewolfpopulationhadgrowntomorethan170wolves.Graywolvesoncewereseenhere

2、andthereintheYellowstoneareaandmuchofthecontinentalUnitedStates,buttheyweregraduallydisplacedbyhumandevelopment.Bythe1920s,wolveshadpracticallydisappearedfromtheYellowstonearea.TheywentfarthernorthintothedeepforestsofCanada,wheretherewerefewerhumansaround.Thedisappearanceofthewolveshadmanyun

3、expectedresults.Deerandelkpopulations—majorfoodsources(来源)forthewolf—grewrapidly.Theseanimalsconsumedlargeamountsofvegetation(植被),whichreducedplantdiversityinthepark.Intheabsenceofwolves,coyotepopulationsalsogrewquickly.Thecoyoteskilledalargepercentageofthepark’sredfoxes,andcompletelydroveaw

4、aythepark’sbeavers.Asearlyas1966,biologistsaskedthegovernmenttoconsiderreintroducingwolvestoYellowstonePark.Theyhopedthatwolveswouldbeabletocontroltheelkandcoyoteproblems.Manyfarmersopposedtheplanbecausetheyfearedthatwolveswouldkilltheirfarmanimalsorpets.Thegovernmentspentnearly30yearscoming

5、upwithaplantoreintroducethewolvers.TheU.S.FishandWildlifeServicecarefullymonitorsandmanagesthewolfpacksinYellowstone.Today,thedebatecontinuesoverhowwellthegraywolfisfittinginatYellowstone.Elk,deer,andcoyotepopulationsaredown,whilebeaversandredfoxeshavemadeacomeback.TheYellowstonewolfprojecth

6、asbeenavaluableexperimenttohelpbiologistsdecidewhethertoreintroducewolvestootherpartsofthecountryaswell.28.Whatisthetextmainlyabout?A.WildliferesearchintheUnitedStates.B.PlantdiversityintheYellowstonearea.C.Theconflictbetweenfarmersandgraywolves.D.ThereintroductionofwolvestoYellowstonePark.2

7、9.Whatdoestheunderlinedword＂displaced＂inparagraph2mean?A.Tested.B.Separated.C.Forcedout.D.Trackeddown.30.Whatdidthedisappearanceofgraywolvesbringabout?A.Damagetolocalecology.B.Adeclineinthepark’sincome.C.Preservationofvegetation.D.Anincreaseintheva