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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5FIRSTAIDFORBURNSTheskinis___1____essentialpartofyourbodyanditslargestorgan.Youhavethreelayersofskin____2______actasabarrieragainstdisease,poisonsandthesun’sharmfulrays.Thefunctionsofyourskinarealsoveryplex:itkeepsyouwarmorcool;i
2、tpreventsyourbodyfromlosingtoomuchwater;itiswhereyoufeelcold,heatorpainanditgivesyouyoursenseoftouch.Soasyoucanimagine,ifyourskingets_____3_____(burn)itcanbeveryserious.Firstaidisveryimportantfirststepinthetreatmentofburns.CausesofburnsYoucangetburnedbyavarietyofthings
3、:hotliquids,steam,fire,radiation(bybeingclosetohighheatorfire,etc),thesun,electricityorchemicals.TypesofburnsTherearethreetypesofburns.Burns_____4_______(call)first,secondorthirddegreeburns,dependingonwhichlayersoftheskinareburned.●FirstdegreeburnsTheseaffectonlythetop
4、layeroftheskin.Theseburnsarenotseriousandshouldfeelbetterwithinadayortwo.Examplesincludemildsunburnandburnscausedby_______5________(touch)ahotpan,stoveorironforamoment.●SeconddegreeburnsTheseaffectboththetopandthesecondlayeroftheskin.Theseburnsareseriousandtakeafewweek
5、stoheal.Examplesincludeseveresunburnandburnscausedbyhotliquids.●ThirddegreeburnsTheseaffectallthreelayersoftheskinandanytissueandorgansundertheskin.Examplesincludeburns_____6_____(cause)byelectricshocks,burningclothes,orseverepetrolfires.Theseburnscauseverysevereinjuri
6、esandthevictimmustgotohospitalatonce.CharacteristicsofburnsFirstdegreeburns●dry,redandmildlyswollen●mildlypainful●turnwhitewhenpressedSeconddegreeburns●rough,redandswollen●blisters●waterysurface●extremelypainfulThirddegreeburns●blackandwhiteandcharred●swollen;oftentiss
7、ueunderthemcanbeseen●littleornopainifnervesaredamaged;maybepainaroundedgeofinjuredarea.Firstaidtreatment1.Removeclothingusingscissorsifnecessary_______7_____itisstucktotheburn.Takeoffotherclothingandjewelleryneartheburn.2.Coolburns_________8_______(immediate)withcoolbu
8、tnoticywater.Itisbesttoplaceburnsundergentlyrunningwaterforabout10minutes.(Thecoolwaterstopstheburningprocess,prevent
