Unit+1+Reading+课件【备课精讲精研+能力拓展提升】高中英语牛津译林版（2020）选修第一册

X1Unit1OurlivingplanetmovementsmineralsAustraliaTheoceanfascinatingchallengingvastmysteriousHowdoyouliketheocean?X1Unit1Theoceandeepunderwatervolcanoesthebluewhalea65,000-kilometre-long

mountainrangebeneaththeocean,whichistheworld’slongest.Theoceancoversaround71%ofthesurfaceofourplanet.ReadforstructureReadthedocumentarytranscriptandcompletethechartbelowPara.3: Para.2: Para.4: Para.5: Para.1:Weshouldexploretheworldbeneaththeoceanfornewlifeformsandunusualgeologicalformations.IntroductionMainbodyConclusionMuchoftheknownmarinelifelivesintheopen

ocean,andsmallfilter

feedersandhuntersliveinthetwilightzone.ThedeepoceanishometothestrangestcreaturesontheEarth.Shrimpsandotherorganismslivearoundhydrothermalvents,andthe

MarianaTrenchcanbefoundontheoceanfloor.Morewondersbeneaththesurfaceoftheoceanawaitus.1.ReadthetranscriptagainandfinishA2onPage4.(1)Whatpercentageoftheworld’soceanshaveweexplored?_______________________________________________________________(2)Whatdosmallfilterfeedersdoatnight?_______________________________________________________________(3)Howdoblindcreaturesinthedeepoceanmanagetosurvive?______________________________________________________________________________________________________________________________(4)Whathaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse?_______________________________________________________________Theknowledgethatlifecanexistintheextremeconditionsontheoceanfloor.Theyswimuptofeedinthenutrient-richwatersabove.Theydependonothersensessuchassmellandtheirabilitytodetectslightchangesinwaterpressuretoobtainfoodandavoidbeingcaught.Lessthan20%.Readfordetails2.Fillinthetablewithproperinformationfromthetext.ReadfordetailsZonesDepthsEnvironmentLifeformsorgeologicalformationsTheopenocean0to200metresMostvisiblelight(1)_____________________________(2)_____________________200metresto1,000metresLittlesunlightAlmostnoplantlifeSmallfilterfeeders(3)____________________________________________________________Thedeepocean1,000metrestotheoceanfloorNolight(4)________________________HugepressuresBlind,strangeorganisms,andsomehavingmaleandfemaleorgansShrimpsandotherorganisms(5)___________________________________________________________MuchoftheknownmarinelifeThetwilightzoneHunterswithtelescopic,upward-pointingeyesandbackward-curvingteethTemperaturesjustabovefreezingHydrothermalvents,theMarianaTrenchandrockbridgestheopenocean(200m)thetwilightzone(200~1000m)thedeepocean(past1000m)Thedocumentarytranscriptdescribestheoceaninthesurface-to-bottomorder,whichmakesitscontentmoreorganizedandeasiertofollow.Findtheexpressionsindicatingthechangesinposition.P5B2Readforwritingtechniques1.thewritingorderWhatistheauthor’spurposeofwritinginthisway?Para.1Para.5ToattractthereadersTocallonthereaderstoexploreReadforwritingtechniques2.askingquestionsAnalysethefeaturesofthedocumentarytranscript.IntroductionConclusionMainbody1.averyclearstructure2.Organisedinspatial(空间的)order(fromsurfacetobottom)3.narratedinthefirstperson(fromtheperspectiveofahost)4.

applysomequestionsand

exclamatorysentences(感叹句)SummaryOur1.___________(curious)abouttheunknownremainsunshakeable.2.______isestimatedthatmorethan80%oftheworld’soceansareunexplored.So,ifwewanttofindexcitingnewlifeforms,theoceanis3._________weshouldbelooking.Thefirst200metersofourdivetakesusthroughwhatcan4.____________(call)theopenocean,wheremostvisiblelightexists.Herelivesmuchofthemarinelifeweknowabout.Below200meters,weenterthetwilightzone,wherethereislittlesunlightandthusalmostnoplantlife.Mostofthefish5.________(live)herearesmallfilterfeederswhichswimupatnighttofeedinthenutrient-richwatersabove.curiosityItwherebecalledlivingSummaryOncepast1,000meters,wewillreachthedeepocean,wherethereisnolight.Creatureslivinginthisextremeenvironmentcanrelynot6._______theireyesightbutotherssensestosurvive.ThefishinthedeepoceanareamongthestrangestcreaturesontheEarth,manyof7._________haveyettobeproperlystudied.Ontheoceanfloor,wemayseeshrimpsandotherorganismsaroundhydrothermalvents.Itwasthisdiscovery8._____revealedlifeformscanobtainnutrientsandenergyfromthermalsources.Besides,thedeepestpointofMarianaTrench,9._________(know)astheChallengerDeep,isnearly11,000metersbelowsealevel.Theworldbeneaththesurfaceoftheoceanisindeedanamazingplace.Withsomuchoftheoceansleft______________(explore),whoknowswhatwondersstillawaitusinthefuture?onwhichknowntoexplorethatPost-readingCompletepartB1

Theworld’svastoceans,nowwellacceptedastheEarth’s“finalfrontier”,(1)

_________________

theheartsofscientistsandexplorers.WhilemostoftheEarth’slandmasshasbeenexploredandmapped,around80%oftheoceansremaintobeexploredandgreatdiscoveries(2)_________________us.Therefore,manycountrieshavesparednoeffortindeep-seaexploration.LeadingthewayisChina,oneofthefewcountriesthathavedevelopedtheabilitytosendhumanstothedeepestpartsofouroceans.capture/havecapturedawaitInJune2012,China’sfirstdeep-seamannedsubmersible,Jiaolong,setaworld(3)_________________recordforsubmersiblesofitskind,byreachingadepthof7,062metresintheMarianaTrenchinthePacificOcean.In2017,ChinasuccessfullytestedShenhaiYongshi,asubmersiblecapableofreachingadepthof4,500metres.Lateritconductedhundredsofdivesindifferentoceans,exploringwhatlaydeep(4)_________________thewater.Withallofitscorecomponentsproduced(5)_________________byChina,ithaspavedthewayfordeeperandbroaderunderseaexplorationinthefuture.solelybeneathdivingTheyear2020witnessedanothersignificantmilestoneinChina’s(6)_________________technology,whenthedeep-seamannedsubmersibleFendouzhecompletedeightsuccessfuldivesofmorethan10,000metresintheMarianaTrench.

ThesebreakthroughshavedemonstratedChina’sdeterminationtoexplorethedeepseaanditsunderwaterresearchpotential(7)_________________.Travellingdowntoextremedepthsnotonlyallowsusto(8)______________newinsightsintotheocean,butitalsoopensupexcitingopportunitiesthatwilleventuallybenefittheworldabove.marineinequalmeasureobtainIfyouweretodeliveraspeechabouttheworldbeneaththeocean,whatotherinformationwouldyouinclude?GroupPresentationTheworldbeneaththeoceanMarineplantsAdvantagesMeasuresChallenges/ThreatsAdavantgesScienceEconomyCountryHumanenhanceourcountry‘ssoftpowerpavethewayforfuturelifeexploittherichresourcesofoilexplorethemysteryoftheEarthandoceanWhataspectsofpeople’slivescanbeaffectedbyheritagesitesatrisk?Challengeshighwaterpressure（para.3）beattackedbytheunkonwnseacreaturespoorvisibilitytheprecarioussubmersibletherapidlychangingtemperatures（para.3）OurOceans,OurResponsibilityJune8thwasofficiallynamedbytheUNin2009asWorldOceansDay._______________________________________________（它旨在于提高人们保护海洋的意识）