2018学年高中英语 Unit 5 The power of nature Section Ⅰ Warming amp；Reading Pre-reading教学案 新人教版-选修6

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1、-Unit5ThepowerofnatureMountKilauea,theworld'smostactivevolcano,isontheislandofHawaii.ItisnotfarfromMaunaLoa,thelargestvolcanointheworld.MaunaLoaandKilaueatogetherformtheVolcanoesNationalParkinHawaii.MountKilaueahasproducedlava(熔岩)morethanfiftytimesinthelastoneh

2、undredyears.Atthismoment,redhotlavaispouringoutofKilauea.Ithasbeendoingthissince1983.Sometimesthelavamovesslowly.Atothertimesitpoursoutveryfastasahugeamountofpressure(压力)forcesitfromthevolcano.Duringthesetimes,itmovesalmostasquicklyaswatermovingdownthesideofamo

3、untain.SometimesKilaueaproducesalargeamountoflavathatseemslikeriversoffire.WhenthelavafromKilaueareachestheocean,itsfierce(凶猛的)heatproducesagreatamountofsteamthatrisesintotheair.Thelavaissohotitcontinuestoburnunderwaterforsometime.ThelavafromKilaueacontinuestoa

4、ddlandtotheislandasthevolcanoesofHawaiihavealwaysdone.ItwasthesevolcanoesthatformedtheislandsofHawaii.MostofthetimethelavaofKilaueaseemstomovepeacefullytowardtheocean.Yetitisnotaspeacefulasitseemsfromadistance.Inrecentyearsthelavadestroyedonesmalltownontheislan

5、d.Theliquid(流动的)rockslowlycoveredthetown.Itblockedroadsanddestroyedthem.NothingcanstopthelavaofKilauea.ExpertssaythevolcanoesofMaunaLoaandKilaueaareaseriousthreat(威胁)topropertyonmanypartsoftheisland.TheyalsosaythevolcanoesoftheislandofHawaiiareproofthatthechang

6、ingenvironmentofEarthisandwillalwaysremain16-beyondhumancontrol.16-Section_ⅠWarmingUp&Reading—PrereadingANEXCITINGJOBIhavethegreatestjobintheworld.Itraveltounusualplacesandworkalongside①peoplefromallovertheworld.Sometimesworkingoutdoors,sometimesinanoffice,some

7、timesusingscientificequipment②andsometimesmeetinglocalpeopleandtourists,Iamneverbored.Althoughmyjobisoccasionally③dangerous,Idon'tmindbecausedangerexcitesmeandmakesmefeelalive.However,themostimportantthingaboutmyjobisthatIhelpprotectordinarypeoplefrom④oneofthem

8、ostpowerfulforcesonearth—thevolcano.Iwasappointed⑤asavolcanologistworkingfortheHawaiianVolcanoObservatory⑥(HVO)twentyyearsago.Myjobiscollectinginformationforadatabase⑦aboutM