英语美国大峡谷课件

IntroductionOntheKaibabPlateauinnorthwesternArizona,theGrandCanyonoftheColoradoisoneofthemostspectacularsceneryonearth.ColoradoRivercuttheColoradoPlateauinto19maincanyon,withatotalareaof2,724.7squarekilometers.Thedeepest,widestandlongestoneistheGrandCanyonoftheColorado.Itis446kminlength,isoneoftheworld'slongestcanyons.TheCanyonis6-28kilometerswidesonthetop,thedeepestplaceis1800meters.Thebottomsurfaceofthewaterislessthan1,000meterswide.Mostoftherocksarered.简介科罗拉多大峡谷位于美国亚利桑那州西北部的凯巴布高原上，是地球上最为壮丽的景色之一。科罗拉多河在科罗拉多高原上共切割出19条主要峡谷，总面积2724.7平方公里，其中最深、最宽、最长的一个就是科罗拉多大峡谷。它全长446公里，是世界上最长的峡谷之一。峡谷顶宽6至28公里，最深处1800米。谷底水面不足1000米宽。山石多为红色。Formation

AstothelegendofIndian,theGrandCanyonwasformedduringaflood.ThentheGodturnedthehumanintofishsothattheysurvived.Therefore,thelocalIndiansstilldidn’teatfish.Infact,theshapingoftheGrandCanyon,isnotashortspanoftime,butalongperiodofbillionsofyears,andcanstillberelenteduntilforever.Humanscannotperceiveengravedontheprogresseveryday,buttheevolutionofthetimeisunbelieved.峡谷的颜色，又因两壁岩石的种类、风化的程度、时间的演变，以及所含矿物质的各异，而各有不同，铁矿石在阳光照射下，呈现五彩.TheGrandCanyonhasnotonlygracescenery,butalsohaslotsofwildlife.Therearemorethan200kindsofbirds,60speciesofmammalsand15speciesofreptilesandamphibians.BetweenFrattonranchinthebottomofCanyonandSanFrancisco,isbothsubtropicalplantsandboreal(寒带)plantgrowtharea.So,herecactus,poppy,spruce,firandotherplantsalmostgrowinthesamearea.大峡谷不仅景色奇异，而且野生动物十分繁富。有200多种鸟禽，60种哺乳动物和15种爬行动物和两栖动物在此生息，在谷底的法顿牧场的圣弗朗西斯科峰之间的地段，既是亚热带植物，也是寒带植物的生长区。所以，这里仙人掌、罂栗、云杉、冷杉等植物几乎是在同一地区内共生。WaysforTravelingVisitorscanwalkorrideadonkey,And,youwillhaveasenseofmiraclesinyourlifeasyoumoveforwardontheadventure.OtherwiseyoucantakeraftsontherapidsoftheColoradoRivertoexperiencethethrillofpleasure,orsitontheviewingairlinersmajesticover