Unit 6 Developing ideas -高中英语外研版（2019）选择性必修第二册

PlanB:LifeonMars?Workinpairs.CompletethequizandfindouthowmuchyouknowaboutMars.Trytoguessifyouarenotsureoftheanswers.1.a2.a3.c4.bActivity2ReadthepassageandfindoutwhyhumansmightliveonMars.BecauseMarsisrelativelyclosetoEarthandhasanenvironmentlesshostilethanthatofotherplanets.PlanB:LifeonMars?MindmapScientistsarepreparingPlanBforearthduetotherisks.ThereasonwhyMarsisfitforhumanhabitation.TheattemptstoexploreMars.ThechallengesandprogressintryingtoliveonMars.Weneedtotakecareofourownplanet.nuclearmissiles,environmentalproblems,disastersfascination?unmannedspacecraftinthe1960s,mannedmissionsrequirements,months,unabletoreturnBiosphere2experiment,growingavarietyofplantsChoosethemagazineinwhichyouwouldmostlikelyfindthepassageandgiveyourreasons.1TheTraveller2AllAboutSpace3EnvironmentalConcerns4BiologyforFunActivity4Choosethestatementsthatcanbeinferredfromthepassage.HumanshaveyetnotvisitedMars.PeoplewanttogotoMarsonholiday.ThereareplantsgrowingonMars.ThegreatestrisktolifeonEarthusedtobenuclearmissiles.Oneday,humanswillhavetogoandliveonanotherplanet.OurPlanAincludesdevelopingrenewableenergyresources.TheBiosphere2experimentendedinfailure.In_____1960sand1970s,thegreatestfearwas_____thehumanrace,andpossiblyall_________(advance)lifeformsontheplanet,could____________(被毁灭)bynuclearmissiles,justatthepushofabutton.Today,however,environmentalproblemshavetakenoverasthegreatestrisk____lifeonEarth.Scientistsarethinkingofwaysto_____(low)thisrisk,suchasreplacingcoalandoil____formsofrenewableenergy.Buttheyarealso——___________________(做最坏的打算):whatcanwedoifthe________(terrify)scenesinfilmssuchasTheDayAfterTomorrowhappeninreallife?WhatisourPlanBforEarth?thethatadvancedbewipedouttolowerwithpreparingfortheworstterrifyingOneoptionis_________(explore)otherplanetstoseeifwecouldliveonthem.ThemostlikelychoiceisMars,______isrelativelyclosetoEarthandhasanenvironmentlesshostilethan_____ofotherplanets.Mars___________(fascinate)peoplesinceancienttimes,andtodayourinterestinMartian_________(explore)isgreaterthaneverbefore.FilmssuchasTheMartianenjoyworldwide_________(popular).Moregovernmentsandorganisationsaremakingeffortstoeducatethepublic____theRedPlanet,forexample,theMarsDesertResearchStationintheUtahdesertoftheUSandtheMarsVillageinNorth-westChina’sQinghaiProvince.toexplorewhichthathasfascinatedexplorationpopularityonSincethe1960s,we__________________(send)unmannedspacecrafttoMars.Ourprobeshaveorbitedtheplanet,_______(send)backvaluabledataandstunningimages.OurrobotshaveexploredtheMartiansurface,________(test)thesoilandsearchingforresources,waterandsignsoflife.__________(encourage)bydiscoveriesovertheyears,spaceagenciesofvariouscountriesareplanningmannedmissionstoMarsthatcouldtakeplacewithinthenexttwenty-fiveyears.havebeensendingsendingtestingEncouraged_______________________(毫无疑问)humankindisdrawntowardsMars,withdreamsofmaking____oursecondhome.However,________(send)peopletherewillrequirealltheskill,courageandintelligenceofthehumanrace.______theMooncanbereachedwithindays,itwouldtakemonthstoreachMars,travelling_______dangeroussolarradiation.AndevenifthefirstsettlersdoreachMars______(safe),theymaynotbeabletoreturntoEarth–ever.Stayingalivewillbeadailychallenge,butas______(prove)bytheBiosphere2experiment,notimpossible.ThereisnodoubtthatitsendingWhilethroughsafelyprovedAsearlyasthe1980s,scientistswerebuildingBiosphere2intheArizonadesert.Itconsisted____aclosedspaceinwhichpeople,animalsandplantscouldlivetogether.The“closed”conceptmeantthatthespace_______________(design)tofunctionwithitsownoxygen,foodandwater,needingnothingfromtheoutsideworld.Althoughthetwo-yearexperimentwasnot___success,it_____provideus_____abetterunderstandingofhowhumansmightbeabletoliveonanotherplanet.Morerecently,scientistshavesucceededin______(grow)avarietyofplantsinanenvironmentsimilartothatonMars.Thatdefinitelyisabigstepforward.ofwasdesignedtoadidwithgrowingFornow,humansettlementofMarsisstilldecadesaway.Inthemeantime,_______(science)researchshowsthattheplanetEarthisgetting______(warm).Thischangeisbeingcausedbyhumanactivityandis______________________(有严重影响)thebiosphere.Untilweare______(final)abletoliveonanotherplanet,weneedtotakemuchbettercareofourown.Rightnow,it’stheonlyonewehave!scientificwarmerhavingaterribleeffectonfinallyWritingasurvivalstoryActivity61Whereisthepersoninthestory?2Whatdifficultiesishefacing?3Whathashealreadydonetostayalive?4Whatwillhedonext?1ThepersoninthestoryisonMars.2Hehastokeephimselfsafefromthedeadlyradiationoutside.Andheisfacingthelackofwater,oxygenandfood.3Hehasresumedcommunicationwiththebase.Hehasdiscoveredanundergroundicedeposittogetwater,andproduceoxygenwiththewater.4HewillworkouthowtofarmonMarsandgrowplantswithseeds.becaughti