Unit 1 Period 5 Workbook（同步课件）-【上好课】2024-2025学年高二英语同步精品课堂（人教版2019选择性必修第二册）.pptx

WorkbookUnit1Scienceandscientists高中英语/人教版2019/选择性必修第二册

UNIT1UsingWordsandExpressions1Completethecrosswordpuzzleaccordingtothecluesgiven.1havinganaturalabilitytodosthwell2todealwith3hardorfirm4tothrowsb/sthsomewherewithforce5apersonwhohelpssbelseinhis/herjob6tothinkthatsbisresponsibleforsthbad7tobecomelessinnumberoramount8aweaponthattravelsthroughtheairandexplodeswhenitreachesitstarget9notmixedwithanything10tochangetheformofsthgiftedhandleblameassistantmissilesoldcsecrespurtrnform

2Whatdoyouthinkagreatscientistneedsmost?Rankthefollowinginorderofimportanceandcompareyourlistwithyourpartner’s.?theoreticalbackground ?professionalknowledge?leadership ?talent?imagination ?devotion?determination ?creativity?logicalreasoning ?inspiration?researchmethods ?statisticalabilityAnswersmayvary.Maybeimagination,devotion,determinationandcreativityrankthefirst.

EdwinPowellHubble,bornin1889inMarshfieldMissouri,spenthisearlyyearsinthestateofKentucky.Afterwards,hemovedwithhisfamilytoChicagoandattendedtheUniversityofChicago,wherehestudiedmathematicsandastronomyandsoonprovedtobe_______inthesesubjects.AttheMountWilsonObservatory,Hubblestudiedobjectswithinourowngalaxyusinga__________withamirrorofonehundredandfifty-twocentimetresindiameter.His_______discoverywasthefindingofaCepheidvariablestar(造父变星)intheouterareaofanebula(星云).He________thatnebulaeweregalaxiesthemselves,andthus,astronomersnow___________totheviewthatdistantgalaxiesdoexist.Hethenmademoreobservationsofforty-sixgalaxiesthatweretravellingawayfromEarthwithspeedsthatwere_______directlytothegalaxies’distancefromEarth.Hubblediscoveredthescientificrule--now