高二英语必修5 unit1 great scientists.ppt

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1、Unit1WarmingupandReadingDoyouknowthesefamousscientists?StephenHawkingPutforwardatheoryaboutblackholesDiscoveredradiumMarieCurieAlbertEinsteinTheoryofRelativityThomasEdisonTheInventionsofThomasEdisonPhonograph留声机LightbulbMotionPicturesZhangHengwasamathematician,a

2、stronomerandgeographer.Heinventedthefirstseismographformeasuringearthquakes.ZhangHengYuanLongpin---FatherofHybridRiceWhosaid…?"IsawriceplantsastallasChinesesorghum,”hesaidofadreamheoncehad,“eachearofriceasbigasabroomandeachgrainofriceashugeasapeanut.Icouldhidein

3、theshadowofthericecropswithafriend."Prediction(Whatisthepassageabout?)JohnSnowDefeats“KingCholera”BackgroundJohnSnow(1813-1858)wasbornandworkedasadoctorinGreatBritain.Hewasoriginallyananaesthetist(麻醉师).HewassofamousthathebecamethedoctorforQueenVictoria.Fouroutbr

4、eaksofcholerainthe1830sand1840skilledmanypeopleinEngland.In1854,“themostterribleoutbreakofcholerawhicheveroccurredinthekingdom”began.Itwassoviolentandsuddenthat127peoplediedinthefirstthreedays.Whatwasthecauseofthisillness?HowdidJohnSnowfinditout?waterpumphandleF

5、ast—reading:Readthepassagequicklyandfindthenumberbelowandtherelevanthappeningsinthepassage.16372089pump3840BROADSTREETCAMBRIDGESTREET21JohnSnow'sCholeraMap7PubWatercompanyTheSourceofthePollutedWaterUpperreachesofriverLowerreachesWaterpumpDiscussion:1.What’sthesi

6、gnificanceofSnow’sfamouscholeramap?2.IfyouwereJohnSnow,howwouldyouinvestigatethecholera?Snow'sCholeraMapThesignificanceofSnow’sfamouscholeramapisthat,byclosingtheBroadStreetpumpbyremovingitshandle,Dr.Snowstoppedamajorcholeraepidemic(传染病),andthusdemonstratedthatc

7、holeraisawaterbornedisease.Thiswasnotpreviouslyunderstood.Themapisthemostfamousandclassicalexampleinthefieldofmedicalcartography(制图法).1.FinishEx.1onP42.2.Retellthestory.3.Reviewfortomorrow’sdictation.HomeworkThankyou