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1、2019-2020年高考英语一轮复习Unit5Firstaid导学案新人教版必修5(I)FIRSTAIDFORBURNSTheskinis___1____essentialpartofyourbodyanditslargestorgan.Youhavethreelayersofskin____2______actasabarrieragainstdisease,poisonsandthesun’sharmfulrays.Thefunctionsofyourskinarealsoveryplex:itkeepsyouwarmorcool;itprev
2、entsyourbodyfromlosingtoomuchwater;itiswhereyoufeelcold,heatorpainanditgivesyouyoursenseoftouch.Soasyoucanimagine,ifyourskingets_____3_____(burn)itcanbeveryserious.Firstaidisveryimportantfirststepinthetreatmentofburns.CausesofburnsYoucangetburnedbyavarietyofthings:hotliquids,s
3、team,fire,radiation(bybeingclosetohighheatorfire,etc),thesun,electricityorchemicals.TypesofburnsTherearethreetypesofburns.Burns_____4_______(call)first,secondorthirddegreeburns,dependingonwhichlayersoftheskinareburned.●FirstdegreeburnsTheseaffectonlythetoplayeroftheskin.Theseb
4、urnsarenotseriousandshouldfeelbetterwithinadayortwo.Examplesincludemildsunburnandburnscausedby_______5________(touch)ahotpan,stoveorironforamoment.●SeconddegreeburnsTheseaffectboththetopandthesecondlayeroftheskin.Theseburnsareseriousandtakeafewweekstoheal.Examplesincludesevere
5、sunburnandburnscausedbyhotliquids.●ThirddegreeburnsTheseaffectallthreelayersoftheskinandanytissueandorgansundertheskin.Examplesincludeburns_____6_____(cause)byelectricshocks,burningclothes,orseverepetrolfires.Theseburnscauseverysevereinjuriesandthevictimmustgotohospitalatonce.
6、CharacteristicsofburnsFirstdegreeburns●dry,redandmildlyswollen●mildlypainful●turnwhitewhenpressedSeconddegreeburns●rough,redandswollen●blisters●waterysurface●extremelypainfulThirddegreeburns●blackandwhiteandcharred●swollen;oftentissueunderthemcanbeseen●littleornopainifnervesar
7、edamaged;maybepainaroundedgeofinjuredarea.Firstaidtreatment1.Removeclothingusingscissorsifnecessary_______7_____itisstucktotheburn.Takeoffotherclothingandjewelleryneartheburn.2.Coolburns_________8_______(immediate)withcoolbutnoticywater.Itisbesttoplaceburnsundergentlyrunningwa
8、terforabout10minutes.(Thecoolwaterstopstheburningprocess,prev
