Unit 5

成才之路·英语路漫漫其修远兮吾将上下而求索人教版·选修6(十二省区)成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5ThepowerofnatureThepowerofnatureUnit5成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5Thepowerofnature话题导入成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5ThepowerofnatureTheviolenceofnatureWhatisatornado?Atornadoisarotating(旋转的)columnofairfromathunderstormtotheground.Themostviolenthavewindsofmorethan400kilometresperhour.AlmostallofthemoccurintheUS，intheareafromTexasinthesoutheasttoSouthDakotainthenorth.Tornadoescanpickupcars,trainsandevenhousesandputthemdowninthenextstreet，oreveninthenexttown.Theycantakethefuroffthebackofacatandthefeathersoffachicken.Theycandestroyhouses,butleavethefurnitureinsideexactlywhereitwas.成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5Thepowerofnature①Onaverage,thereare800tornadoesintheUSeachyear，causingabout80deathsandover1,500injuries.Theworsttornadoofalltimeoccurredin1925，affectingthreeUSstates:Missouri，IllinoisandIndiana.②Bythetimeitended,about700peoplehadbeenkilledandmorethan2,000hadbeeninjured.Whatisahurricane?成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5ThepowerofnatureHurricanesarestrongtropical(热带的)storms,andtheyusuallyoccurinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexico.Thereareviolentwindsof120kilometresperhourormore,whichcausehugewaves,heavyrainandfloods.ThereareonaveragesixAtlantichurricaneseachyearandtheyusuallyaffecttheeastcoastoftheUSfromTexastoMaine.Theworsthurricanedisasterofalltimeoccurredonthe8thSeptember,1900inGalveston,Texas.Windsofabout200kilometresperhourandfivemetrehighwaveshitthecity.Thedisasterkilled6,000peopleinapopulationof37,000anddestroyed3,600buildings.成才之路·高中新课程·学习指导·人教版·英语·选修6(十二省区)Unit5Thepowerofnature佳句仿写1．公共汽车被风雾所阻，因而耽搁了。Thebuswasheldupbythesnowstorm,________________________________.2．到去年年底他们已建造了三艘船。BylastDecemberthreeships________________________________________.答案：1.thuscausingthedelay2.hadbeenbuiltbythem