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Unit6SpaceTeachingobjectives:1.Readingskill:Scanning2.Tolearnthehistoryofprobingtheuniverse3.thepromisingandthedisappointingaspectsoftheSpaceProgramI.ReadingSkill:Scanning•Whatisscanning?Lookingfortheexactanswertoaspecificquestion.•Whendoweuseit?–Whenwewanttofindinformation,butdon’tcareasmuchaboutreadingtheentiretext•Websites-Whattimeisthemovie?•Postedgrades-Whichoneismine?•Tests-WhenwastheNormanConquest?•Howtoscan?Letyoureyesrunrapidlyoverseverallinesofprintatatime,lookingforaspecificfactoridea.Practicalstepsforscanning•Readthescanningexercisesquicktorememberthespecificquestionsinmind.•Skimthewholetextandgetthegeneralideaaboutthetext.Atthesametime,markthekeyinformation.•Scan,butdonotreadintheusualway.Letyoureyesmoveveryrapidlyoverthesentencesandquicklylocatethesentencethatgivesyoutheanswer.Readthissentence.Checknofurtherinthetext.•Markyouranswertothequestioneitherbycirclingtheletterorbyfillingintheblank.•Goontothesecondquestionimmediately,andrepeatthisprocess.Butdon’treadthetextfromthebeginning,andcontinuetolocatefromyourlaststop.•Completeallthequestionsonthetext.•Twooptions:–1.Try“PureScanning”-Readthequestionsandanswers,thenscanthetexttofindtheanswers,withoutreadingthepassage.Savetimebyskippingthepartsyoudon’tneed.–2.SurveyandSkim,firsttoacquaintyourselfwiththepassagesoyoucanfindtheinformationquicklybecauseofyourunderstanding.Unit6SpaceII.AstronomyandspacebasicsspacegalaxySolarsystemstar,planet,moon,comet,asteroid,meteoroidThe8mainplanetsinthesolarsystemobliquity[ə'blikwəti]n.倾斜；倾斜度；不正直•Mercury[‘mɜːkjərɪ]水星，汞•Venus[‘vi:nəs]金星•MotherEarth大地，土地•Mars[mɑ:z]火星•Jupiter['dʒu:pitə]木星•Saturn[‘sætən]土星•Uranus[‘juərənəs]天王星•Neptune[‘neptju:n]海王星•Pluto['plu:təu]冥王星etc.•Sputnik,theworld’sfirstartificialearthsatellite,launchedbytheformerSovietin1957.•斯普特尼克['spʌtnit;'spu-]•前苏联人造地球卫星•CosmonautYuriGagarin,HerooftheSovietUnion,wasaSovietcosmonaut.On12April1961,hebecamethefirsthumaninouterspaceandthefirsttoorbittheEarth.Hereceivedmedalsfromaroundtheworldforhispioneeringtourinspace.TheMoonLanding•OnJuly16,1969,theApollo11launchedfromtheKennedySpaceCenter.OnJuly20,1969,CommanderNeilArmstrongbecamethefirstmanonthemoon.Hesaidthehistoricwords,Onesmallstepforman,onegiantleapformankind.NASA美国国家航空和宇宙航行局/美国国家航空航天局•TheNationalAeronauticsandSpaceAdministrationisanExecutiveBranchagencyoftheUnitedStatesgovernment,responsibleforthenation'scivilianspaceprogramandaeronauticsandaerospaceresearch.SpaceShuttleChallengerdisaster•TheSpaceShuttleChallengerdisasteroccurredonJanuary28,1986,whenSpaceShuttleChallengerbrokeapart73secondsintoitsflight,leadingtothedeathsofitssevencrewmembers.•航天飞机Challengerflight51-lcrew•IsOuterSpaceWorthExploring?AlmosteverydaywemayseesomethinginthenewspaperoronTVaboutthelatestexcitingdevelopmentsinspaceexploration.Thereisanimmenseprideinourscienceandtechnologyandasenseofitsimportanceforthewelfareofmankind.Noteveryone,however,sharesthisfeeling.Eversincespaceresearchbegan,ithasbeencriticizedasahugewasteofmoneyandotherresources,whichmightbeusedtohelptorelievethesufferingoftheearth’sstarvingmillions.Ithasalsobeenfeltthatthespaceprogrammightleadtothetotaldestructionoftheearth.Despitethesedisadvantagesandpotentialdangers,theadvantagesarefargreater.Wehavealreadysucceededinusingsatellitesforcommunications,weatherforecastandoilexplorationandwithfurtherspaceresearch,moreproblemswearehavingnowcanbesolved.Forinstance,withthesuccessofspaceshuttlesandthefeasibilityoflivinginotherplanets,wemaysolvethepopulationproblemontheearth.Spaceprojectswillalsoenableustofindafewchemicalelementstocurepresentlyincurablediseases.•III.Lead-inQuestionsoftheUnit•Question1.Whatisthesignificanceofexploringtheouterspace?•Answer1:knowingthemattersaroundtheearth/advancing•technology/discoveringmysteriesofthecosmos/satisfying•curiosity,etc.•Question2.Whatdoyouknowabouttheuniverse?•Scientistshavealwayswantedtoknowmoreabouttheuniverse.Yearsagotheyknewmanythingsaboutthemoon.Theyknewhowbigitwasandhowfarawayitwasfromtheearth.Buttheywantedtoknowmoreaboutit.Theythoughtthebestwaywastosendmentothemoon.Themoonisabout384000kilometersawayfromtheearth.Aplanecannotflytothemoonbecausetheairreachesonly240kilometersawayfromtheearth.Butsomethingcanflyevenwhenthereisnoair.Thatisarocket(火箭)Howdoesarocketfly?Thereisgas(气体)intherocket.Whenthegasismadeveryhotinsidetherocket,itwillrushoutoftheendoftherocket,soitcanmaketherocketflyupintothesky.•Rocketscanflyfaroutintospace.Rocketswithmeninthemhavebeentothemoon.Severalrocketswithoutmeninthemhaveflowntoanotherplanet(行星)muchfartherawaythanthemoon.Onedayrocketsmaybeabletogotoanyplaceinspace.•Answer2:galaxy[‘gæləksɪ]星系•solarsystem太阳系•theMilkyWay银河blackhole黑洞•constellation[,kɔnstə‘leiʃən]星座，星群•nebula[‘nebjulə]星云starcluster星团•asteroid[‘æstərɔid]小行星•meteor[‘mi:tiə]流星，流星体，陨星•shootingstar流星comet[‘kɔmit]彗星•IV.Practiceofskimmingandscanning•1.Letterperception(25seconds)•2.wordperception(25seconds)•V.WordPretestinSectionA(P.49)Directions:Studentsareexpectedtostudythissectioninclass.Donotpreview.StudentsareaskedtofinishdoingtheexercisesinWordP