unit16warmingupSEFC课件
日期：2010-04-08 04:37
430km/hTherideofthetrainiscomfortableandquietduetothemaglevtechnologyandthespeciallydesignedwindowItsnoiselevelislessthan60decibelsataspeedof300km/hInanotherway，Unit16ScientistsAtWorkUnit16ScientistsAtWorkJennyChengMaglevtrainThehigh-speedmaglevtraintakesabout2minutesand15secondstoreach300km/handabout4minutestoreachitspeakspeed，becausetheexperimentsarefunandveryinteresting，itisalsoveryexpensiveThetotalcostoftheShanghaiMaglevLineisabout10billionyuan(12billionUSdollars)veryfastandcleannowheelsandnoenginenonoisemuchtooexpensiveawasteofmoneySpaceflightsNuclearenergyCloningchemistryphysicsbiologyListeningListentothetapeTickthethingsthatMrsZhutalksabout()safetyinthelab()caraccidents()shoes()gases()flames()experiments()gloves()longhair()liquidsListening2ListentothetapeagainandfillintheblanksForexperimentsthataredoneinthislab，everybodyshouldremember:_____________Thisisveryimportant，butwedon’twant，
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