高中英语课时配套课件：Unit4《Earthquakes》(新人教版必修1)

HowtoprepareforanearthquakeAnearthquakeisaverydangerousnaturaldisaster,particularlyinthePacificRimregion(太平洋板块).Infact,scientistsnowbelievethatthehighlypopulatedSouthernCalifornian(加利福尼亚的)areaislongoverdueforamassiveearthquakealongtheSanAndreasFault.Afteranearthquake,yourhomecouldbeamessandyoumightbeleftwithoutawatersupplyandenergy.Thereareseveralthingsyoucandotoprepareforanearthquakebeforeithappens,tominimizethedamageandpotentialforinjuryinandaroundyourhome.1.Makesurethatthehotwaterheaterisstableandcannottopple(倒下；不牢固)over.Evaluateyourelectricalwiring,electricalappliances(家用电器),andgasconnections.Doanyrepairsifneeded.Duringanearthquake,faultyfittingsandwiringcanbecomeapotentialfiredanger.Whensecuringappliances,besurenottodrillholesinthem—useexistingholes,ormakeloopsfromleather,etc.,thatcanbegluedontoanappliance.Keepappliancesturnedoffandunplugged,sothattheoutletisnotnearthemetalpartofthecord.2.Chimneybricksfalleasilyduringanearthquake.1)Lookaroundyourhouse.Thehouseappearanceshouldalsobecheckedforweaknessesduringanearthquake.2)Ifyourhousehasachimney,thiscanbeasourceofinjuryifittopplesduringanearthquake.Secureittothewallsofthehouseusinggalvanized(镀锌的)metalanglesandbandsatthetop,ceilingline,andbase.3.Practiceearthquakedrillsathome.1)Identifysafeplacesbothindoorsandoutdoors.Examplesinclude:understudyfurniture,againstaninsidewall(wheretheothersideisnotexposedtotheoutdoors),awayfrommirrorsorwindows,orintheopenawayfrombuildingsandtrees.Ifyoudon’tneedthemanymore,youcanthrowthemaway.2)ReadwikiHow’sarticlesonHowtosurviveanearthquake.Dealwithbeingindoorsduringanearthquake,andhowtoreactduringanearthquakeformoreinformationonwhattododuringanearthquake.3)Educateyourselfandthoseinyourfamilyaboutwhatyourfamilyshoulddointheeventofanearthquake.Decideinadvanceonthebestplacetogoduringanearthquakeandwhattheycandoifyouareincapacitated.4)Ifyouhavecivildefensesafetymeetingpoints,besurethateverymemberofthefamilyknowsthelocationoftheoneclosesttohome,school,andwork.4.Trytodeveloproutesandmethodsforgettinghomeafteranearthquakehasoccurred.Sincethereisnoprecisetimeofdaywhenanearthquakemightstrike,youmaybeatwork,atschool,onabus,orinatrainwhenonestrikes.Itishighlylikelythatyouwillneedtoknowseveralwaystogethomesinceroadsandbridgeswilllikelybeobstructedforlongperiodsoftime.5.Preparesuitablesupplies.Preparedisastersuppliesinadvance.Thefollowingitemsareimportanttohavereadilyavailableinyourhome,situatedinacentrallocation:1)Flashlightwithextrabatteries(preferablyoneforeachindividual).2)Portable,battery-operatedradiowithextrabatteries.3)Batterieswillbehardtofind,ifyouwanttofindthem.Somemodelswillchargecellphones,butthecellphonetowersmaybedamaged,evendestroyed.4)Emergencyfoodandwater(somesourcessayyoushouldhaveupto2weeksworthofextrafoodonhandincaserescueworkerscannotreachyourlocation).