英语介绍尼亚加拉大瀑布课件.ppt

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1、Nowletmetakeyouto…NiagaraFallsNiagaraFalls,oneoftheworld’sgreatestnaturalwonders,canonlybedescribedasbreathtaking.AmericansaidNiagaraFallscomprisesthreedistinctcataracts.ThetallestaretheAmericanandBridalVeilfalls(新娘面纱瀑布）ontheAmericanside,separatedbytinyLunaIsland;thebroadHorseshoeFallswhichcur

2、vetheirwayovertoCanadaareprobablythemostimpressive.Canadiansaiditconsistsof2part,HorseshoeFallsandAmericanFalls.Theyhavethesamesource,NiagaraRiver.Backthenthefallsweresevenmilesdownriver,butconstanterosionhascutthembacktotheirpresentsite.Thefallsarecolorfullylitupatnight,andmanysaythey'remostb

3、eautifulinwinter,whenthegroundsarecoveredinsnowandthewatersturntoice.IceBridgeRainbowBridgeTheAmericanFallsgetonlyabout10%ofthewater,whiletheCanadianFallsget90%.Becausethevolume(容量)ofwaterisgreater,theCanadianFallsareerodingfarmorerapidly.UnlikethemountainsoftheWest,Niagaraisashort-timegloryth

4、atwashereyesterdayandwillbegonetomorrow.ThebestviewsontheAmericansidearefromtheProspectPointObservationTower,andfromtheareaatitsbasewherethewaterrushespast;TerrapinPointonGoatIslandinthemiddleoftheriverhassimilarviewsofHorseshoeFalls.That`sall.Thankyou!