Unit+6+Developing+ideas+Reading+课件【知识精讲精研+能力培优提升】 高中英语外研版（2019）选择性必修第二册

Unit6SurvivalPlanB:LifeonMars?Leadin----------------EnvironmentalCrisisPre-reading----------------1.Marsisthe____smallestplanetinthesolarsystem.a.secondb.thirdc.fourth2.ThesurfaceofMarsiscoveredin________.a.rocksb.waterc.grass3.TheaveragerecordedtemperatureonMarsis____.a.40o

C

b.2o

C

c.-63o

C

4.OnedayonMarsisabout_________long.a.18hoursb.24hoursc.37hoursIsitpossibletoliveonMars?火星大气以二氧化碳为主（95.3%），既稀薄又寒冷，遍布撞击坑、峡谷、沙丘和砾石，没有稳定的液态水。南半球是古老、充满撞击坑的高地，北半球则是较年轻的低地平原。Fastreading----------------1.Choosethemagazineinwhichyouwouldmostlikelyfindthepassage？AllAboutSpaceTheTravellerEnvironmentalConcernsBiology

forFunRightnow,Earthistheonlyhomewehave!So,weneedtotakemuchbettercareofourownplanet—Earth.

2.Whatwasthegreatestfearinthe1960sand1970s?A.

Nuclearmissiles.

B.

Environmentalproblems.C.

Exploringspace.Inthe1960sand1970s,thegreatestfearwasthatthehumanrace,andpossiblyalladvancedlifeformsontheplanet,couldbewipedoutbynuclearmissiles.(Para1)3.WhatdoesPlanBmeaninthepassage?A.Exploringotherplanets,suchasMars,toliveon.B.Educatingthepublictolearntheknowledgeofspace.C.Usingrobotstosearchfornewresources.Oneoptionistoexploreotherplanetstoseeifwecouldliveonthem.ThemostlikelychoiceisMars,whichisrelativelyclosetoEarthandhasanenvironmentlesshostilethanthatofotherplanets..(Para2)4.WhyMarsisthemostlikelychoicetoliveonforhumans?A.Becausethereisnopollution.B.Becausethereismuchrenewableenergy.C.BecauseitisrelativelyclosetoEarth.Oneoptionistoexploreotherplanetstoseeifwecouldliveonthem.ThemostlikelychoiceisMars,whichisrelativelyclosetoEarthandhasanenvironmentlesshostilethanthatofotherplanets..(Para2)

5.Whatisthepurposeofthelastparagraph?A.TotellusthatitisstilldecadesbeforewehumansgettoMars.B.Toremindusthatweshouldprotectourearth.C.Toinformusthattheearthistheonlyonethatwecanlive

oninthefuture.Untilwearefinallyabletoliveonanotherplanet,weneedtotakemuchbettercareofourown.Rightnow,it’stheonlyonewehave!(Para5)Intensivereading----------------WhydowehavePlanBforEarth?Para1Thegreatest1.___________in1960sand1970snuclearmissilesTodaythegreatest2._______tolifeonEarth3.———————————fearriskenvironmentalproblemsWhyisMarsourPlanB?Para24.___________closetoEarthLesshostileenvironmentToday5.___________inMartianexplorationisgreaterthaneverbefore.RelativelyourinteresttheMarsDesertResearchStationTheMarsVillageFilmssuchasTheMartianenjoyworldwidepopularityMoregovernmentsandorganisationsaremakingeffortstoeducatethepublicontheRedPlanetWhatarethechallengesofmovingtoMars?Para4courageintelligencetakemonthsdangerousthefirstsettlersStayingalivewillbe11.___________________,butnotimpossible.adailychallengeSendingpeopletherewillrequirealltheskill,6._______and7.___________ofthehumanrace.1Itwould8.___________toreachMars,travellingthrough9._____________solarradiation.2

Evenif10.______________doreachMarssafely,theymaynotbeabletoreturntoEarth-ever.34Biosphere2experimentpossibleaclosedspacePeople,animalsandplantscould12._____________.livetogetherFunction:ownoxygen,foodandwater,needingnothingfromthe13.________________.outsideworldunsuccessfulProvideuswithabetterunderstanding.Abigstepforward.Whatshouldhumanbeingsdointhenearfuture?Para5TosettleMarsis14.___________.decadesawayEarthis15.________________.gettingwarmerHumanactivityhaveaterribleeffectonthebiosphere.Untilwearefinallyabletoliveonanotherplanet,weneedtotakemuchbettercareofEarth.

Choosethestatementsthatcanbeinferredfromthepassage.HumanshaveyetnotvisitedMars.PeoplewanttogotoMarsonholiday.ThereareplantsgrowingonMars.ThegreatesttolifeonEarthusedtobenuclearmissiles.Oneday,humanswillhavetogoandliveonanotherplanet.OurPlanAincludesdevelopingrenewableenergyresources.TheBiosphere2experimentendedinfailure.Sincethe1960s,wehavebeensendingunmannedspacecrafttoMars...spaceagenciesofvariouscountriesareplanningmannedmissionstoMarsthatcouldtakeplacewithinthenext25years.(Para3)Inthe1960sand1970s,thegreatestfearwasthatthehumanrace,andpossiblyalladvancedlifeformsontheplanet,couldbewipedoutbynuclearmissiles.(Para1)Scientistsarethinkingofwaystolowerthisrisk,suchasreplacingcoalandoilwithformsofrenewableenergy.(Para1)Althoughthetwo-yearexperimentwasnotasuccess,itdidprovideuswithabetterunderstandingofhowhumansmightbeabletoliveonanotherplanet.(Para4) Sometimes,weneedtoformopinionsanddrawconclusionsthatarenotdirectlystatedwithinthegiveninformation.Forexample,fromthesentence“WhiletheMooncanbereachedwithindays,itwouldtakemonthstoreachMars,travellingthroughdangeroussolarradiation”,wecaninferthattheMoonislessexposedtodangerousradiationthanMars.Headingsandpicturescanalsohelpusmakeeducatedguessesaboutatext.LearningtolearnPostreading----------------Howtoprotecttheenvironment(theEarth)?controlairpollutionprotecttheforestandsearesourcesstopanyenvironmentalpollutionWtectwaterenvironment,savewaterresourcesprotectrareanimalsandplantsreducetheuseofmotorvehiclecarryonwasterecoveryuseHumanshavelongbeenexploringotherplanetstoliveon.ThemostlikelychoiceisMars,1________isrelativelyclosetoEarthandhasanenvironmentlesshostilethanthatofotherplanets.Mars2________________(fascinate)peoplesinceancienttimes.Sincethe1960s,wehavebeensendingunmannedspacecrafttoMars.3_____________(encourage)bydiscoveriesovertheyears,spaceagen