高二英语必修5 unit1 great scientists

Unit1WarmingupandReading,Doyouknowthesefamousscientists?,StephenHawking,Putforwardatheoryaboutblackholes,Discoveredradium,MarieCurie,AlbertEinstein,TheoryofRelativity,ThomasEdison,TheInventionsofThomasEdison,Phonograph留声机,Lightbulb,MotionPictures,ZhangHengwasamathematician,astronomerandgeographer.Heinventedthefirstseismographformeasuringearthquakes.,ZhangHeng,YuanLongpin-FatherofHybridRice,Whosaid?IsawriceplantsastallasChinesesorghum,”hesaidofadreamheoncehad,“eachearofriceasbigasabroomandeachgrainofriceashugeasapeanut.Icouldhideintheshadowofthericecropswithafriend.,Prediction(Whatisthepassageabout?)JohnSnowDefeats“KingCholera”,BackgroundJohnSnow(1813-1858)wasbornandworkedasadoctorinGreatBritain.Hewasoriginallyananaesthetist(麻醉师).HewassofamousthathebecamethedoctorforQueenVictoria.,Fouroutbreaksofcholerainthe1830sand1840skilledmanypeopleinEngland.In1854,“themostterribleoutbreakofcholerawhicheveroccurredinthekingdom”began.Itwassoviolentandsuddenthat127peoplediedinthefirstthreedays.,Whatwasthecauseofthisillness?HowdidJohnSnowfinditout?,waterpump,handle,Fastreading:,Readthepassagequicklyandfindthenumberbelowandtherelevanthappeningsinthepassage.,16,37,20,8,9,pump,38,40,BROADSTREET,CAMBRIDGESTREET,21,JohnSnowsCholeraMap,7,Pub,Watercompany,TheSourceofthePollutedWater,Upperreachesofriver,Lowerreaches,Waterpump,Discussion:1.WhatsthesignificanceofSnowsfamouscholeramap?2.IfyouwereJohnSnow,howwouldyouinvestigatethecholera?,SnowsCholeraMapThesignificanceofSnowsfamouscholeramapisthat,byclosingtheBroadStreetpumpbyremovingitshandle,Dr.Snowstoppedamajorcholeraepidemic(传染病),andthusdemonstratedthatcholeraisawaterbornedisease.Thiswasnotpreviouslyunderstood.Themapisthemostfamousandclassicalexampleinthefieldofmedicalcartography