unit18新教材课件
日期：2010-01-26 01:57
especiallyinthebigcities60Sometimes，itworks70Whenaflashhappens，InventionsByPaulHuangWenzhouMiddleSchoolUnit18SpeakingHowmuchdoyouknowaboutinventionsandinventors?NThisinventionismadeofmetal50Itispoweredbyanengine40Itlookslikeabird30Itmakesitpossibleforpeopletoflytodifferentplacesintheworld20AplaneIthascoloredlights;redmeansstop;greenmeansgo30Thisisaninventionwhichcanhelppeopleinthestreets，itwillcopyasceneontoafilm60Whenthefilmisdeveloped，itlookslikeatreestandingbesidethestreet50Itdirectscars&trucksatcrossing40TrafficlightsThisinventioncanhelppeopledosomedailywork70Itisusefulforhousework60Themachinecanmakethingsclean50Itneedsdetergent(洗涤剂)&watertowashthingsthatyouwear40AwashingmachineItallowsyoutogetalikenessofanobject80Whenyoupressabutton，thesceneyouhavecopiedappearsonapaper-likething50AcameraHewasaworldfamousinventor90Hereisoneofhisphotos80HewasborninAmerica，
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