Lesson90AswanDam旧课件
日期：2010-12-16 12:22
BySimonxinDoyouknow“Thefourgreatancientcountries”?ChinaancientIndiaancientBabylonNationalFlag国旗Pyramids金字塔sphinxshpinxRiverNile尼罗河AswanDam1Whatarethethreebiggestmanmadeprojectsintheworld?Wherearethey?AswanDamSomeinformationaboutadam:Adamisawallorabankbuilttokeepbackwater63metresdamwaterlevelThreeGorgesSomeinformationabouttheThreeGorges’highdamWaterlevel185m156mInformationaboutAswanDam1Controlthewater 2MakeelectricityWhenitwasbuiltWhySizeProblemsin19703， 铃一响，泛滥eg:translation每年都有成百上千的人死于洪灾，000peoplemove templesindangerfloodn洪水 v涌向 淹没，学生们就象洪水般涌向食堂，街道就会被淹没啦， 水位如果继续上升，HundredsofpeopledieoffloodeveryyearAssoonasthebellrang，theSsfleenoodedtothecantStreetswillbefloodedifthewaterlevelrisesupdatefrom=datebackto始建于，830meterslong 980meterswideatthebase 40meterswideatthetop53，追溯到……Thechurchinthewestofthecity_____the14thcenturyAisdatedtoBISdatedfromCdatesbacktoDgobackintimetoIaminterestedinEnglishsincemysch，
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