高考英语一轮基础练unit3celebration（含解析）北师大版

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1、Unit3Celebration阅读理解AGreycloudsmoveaslowassmokeoverthetreetopsatLoloPass.Thegroundiswhite.ThedayisJune10.IthasbeensnowingforthepastfourdaysintheBitterrootMountains.WayneFairchildisgettingworriedaboutourtrekovertheLoloTrail-95milesfromLoloMontanatoWeippeinIdaho,acrosstheroughestcountry

2、intheWest.LewisandClarkwerenearlydefeated200yearsagobysnowstormsontheLolo.TodayFairchildisnervouslycheckingtheweatherreports.Hehasagreedtotakemeacrossthetoughest,middlesectionofthetrail.WhenLewisclimbedontopofLemhiPass,140milessouthofMissoula,onAug.12,1805,hewasastonishedbywhatwasinfr

3、ontofhim;＂highmountainchainsstilltotheWestofuswiththeirtopspartiallycoveredwithsnow.＂NobodyinwhatwasthentheUSknewtheRockyMountainsexisted,withpeakstwiceashighasanythingintheAppalachiansbackEast.Todaytheirpathwaythroughthosemountainsholdsmoreattractionthananyothergroundoverwhichtheytra

4、veled,foritsrawwildernessisanevidencetothecharacteroftwocultures:theexplorerswhobraveditshardshipsandtheNativeAmericanswhoprizeandconservethepathasasacred(神圣的)gift.ItremainstodaythesameconditionaswhenLewisandClarkwalkedit.TheLoloispassableonlyfromJulytomid-September.Ourluckisholdingwi

5、ththeweather,althoughthesnowkeepsgettingdeeper.AsweclimbtoIndianPostOffice,thehighestpointonthetrailat7,033ft,wehavecovered13milesinsoftsnow,andwehardlyhaveenoughenergytomakedinner.Afteramealofchicken,Isitonarockontopoftheridge(山脊）.Thereisnolightvisibleinanydirection,notevenanothercam

6、pfire.Forfourdayswedonotseeanotherhumanbeing.Weareoccupiedwiththethingsthatmixfearwithjoy.InourimaginationwehavefinallycaughtupwithLewisandClark.1.Welearnfromthetextthatbefore1805.A.TheRockyMountainswerewhollycoveredwithsnowB.therewerenopeoplelivinginthewesternpartofAmericaC.noAmerica

7、nsknewoftheexistenceoftheRockyMountainsD.theAppalachianswerethewesternfrontieroftheUnitedStates2.WelearnfromthetextthattheLoloPass.A.haschangedalotsince1805B.isthemeetingpointofthreeculturesC.remainsmuchthesameasitwas200yearsagoD.nowattractsalargenumberoftouriststovisit3.Judgingfromth

8、etext