Unit 1 Science and Scientists Reading and Thinking 课件高中英语人教版选择性必修第二册

Toraisenewquestions,newpossibilities,toregardoldproblemsfromanewanglerequirescreativeimaginationandmarksrealadvanceinscience.—AlbertEinstein&LeopoldInfeld提出新的问题，发现新的可能，从新的角度审视已存在的问题，这些需要创造性的想象力，并标志着科学的真正进步。——阿尔伯特·爱因斯坦&利奥波德·英费尔德选择性必修二

Unit1SCIENCEANDSCIENTISTSPeriod1ReadingandThinking

JohnSnowDefeats“KingCholera”HowdidTuYouyoudiscoverartemisinin?Putthestagesofscientificresearchinthecorrectorder.StagesofScientificResearchfindaproblemdrawaconclusionanalysetheresultsaskaquestioncollectdatafindsupportingevidencethinkofamethodLeadin

Areyoufamiliarwiththesesituations?MaskupGetvaccinatedSelf-isolationPositivemeasuresaretakentofightagainstCovid-19.BesidesCOVID-19,whatotherkindsofepidemics（流行病）doyouknow?Lead-inManyyearsago,aterriblediseasenamedcholeraintheworldkilledmillionsofpeople.Peoplewereveryafraidofit,buttheydidn'tknowwhattodo.Luckily,ayoungdoctordecidedtofindouthowtopreventandtreatthedisease.Finally,thedoctorwonthebattle.Whatarethesymptoms(症状)

ofCholera？Itbeginsinthestomachandaseverecasecanleadtodeathwithoutimmediatetreatment.dehydration(缺水)severevomiting(呕吐)diarrhea(腹泻)Accordingtothetitleandpictures,thestoryisgoingtotellusinformationabout...JohnSnow

Defeats

“KingCholera”Who?How?What?Thetextismainlyabout____________and_______hedefeatedkingcholera.howJohnSnowWecanpredictthat…Activity1Readforthemainideaandcheckpredictions.

Para1Para2Para4Para5JohnSnowwanttousehisknowledgetosolvecolera.Heneededtoprovethesecondtheorywascorrect.Johnbeganhisstudybymarkingonthemap&theprocess.Hefinallyfoundoutthatdirtywaterwasthecauseofcholera.JohnSnowmadegreatcontributionstomodernepidemiology.Para3WhoHowWhatHowReadfordetailedinformationinPara.1

What?It'soneof________________________intheworld,becauseitcauses________________________When?

Where?

Whatresults?

themostfeareddiseasesseverediarrhoea,dehydrationIntheearly19thcenturyEuropeMillionsofpeoplediedfromthediseaseCholeraandevendeath.Snowbecame________becausenooneknew___________________________.SnowHerosetobecome_________________,andeven_______________QueenVictoria

whenshegavebirth..However,hehadadesireto__________________onceandforall.

frustratedhowtopreventorreatcholeraafamousdoctorattendedtodestroycholeraReadfordetailedinformationinPara.21.Whatproblemdidthetwotheoriestrytosolve?Whatarethey?ReadfordetailedinformationinPara.2

Cholerawascausedby_________________.

Cholerawascausedby________________________________ToexplainhowCholeraspread.badairaninfectionfromthegermsinfoodorwater.Snowsubscribedtothe________theory.secondReadfordetailedinformationinPara.31.WhatmethoddidSnowuse?2.Whatdidhefindonthemap?Whatdidhedotodealwithit?1.WhatmethoddidSnowuse?2.Whatdidhefindonthemap?Whatdidhedotodealwithit?AmapofBroadStreetwaterpumpbeerpubManydeathshappenedhere.Nodeathshappenedhere.Snowsuspectedthatthewaterpumpwastoblame.Thehandleofthepumpwasremoved.It

was

believed

that

cholera

was

caused

by

bad

____

or

germs

in____________.ASnow____________theplaceswherethepeoplewho_______hadlived.BManydeathsoccurrednearthe_____________inBroadStreet.Somepeople_________drunkthewaterfromthepump,andlived.AwomanandherdaughterdiedinanotherpartofLondonafter____________________.Thepumpwatercarried______________The________ofthepumpwasremoved.theoriesprocessairfoodorwaterdiedinvestigatedwaterpumphadn’tdrinkingthepumpwatercholeragermshandleSolutionConclusionFindsupportingevidenceReadPara.2-3againandcompletethechartbelow.CDEconclusionevidenceprocesssolutiontheoriesWhat

caused

the

outbreak

of

cholera

in

London

in

1854?WatercompaniessoldwaterfromtheRiverThamesthatwaspollutedbyrawwaste,causingpeoplewhodrankthiswatertogetcholera.ReadfordetailedinformationinPara.4Howcanwepreventcholera?Bydrinkingpureorboiledwater.ReadfordetailedinformationinPara.51.Was

cholera

destroyed

completely?NO.2.WhywasJohnSnowconsideredthefatherofmodernepidemiology?Hehelpedpeopleknowhowtopreventcholera.Hetransformedthewayscientistsstudydiseasesinuseofmapandstatistics.WhatkindofpersondoyouthinkJohnSnowisasagreatscientist?Para.1Furtherthinkingbraveexpertdeterminedcaring,responsiblePara.2Furtherthinkingknowledgeabledetermined,curiousWhatkindofpersondoyouthinkJohnSnowisasagreatscientist?rigorous(严谨的)Para.3Furtherthinkingdetail-oriented(注重细节的)rigorous(严谨的)/carefulWhatkindofpersondoyouthinkJohnSnowisasagreatscientist?Para.5Furtherthinkingdevotedcreative,innovative(创新的)WhatkindofpersondoyouthinkJohnSnowisasagreatscientist?TestforgoalsFillintheblanks.Intheearly19thcentury,1.

aseverecholerahitEurope,JohnSnowbecame2.

(frustrate)becausenooneknewhowtopreventortreatcholera.Butheneverlosthisdesire3.___(destroy)choleraonceandforall.Snowsubscribedtothetheorythatcholera4.__