Unit+2+Out+of+this+world+Extended+Reading+测试案 高中英语译林版(2020)选择性必修第三册

选择性必修三U2ExtendedReading测试案(2)学习目标：1、题型训练2、能力提升学习流程及内容：Leading–in2.Discussion3.Assessment4.CheckingStep1导：（3分钟)根据答题卡的数据，老师点评学案答题情况Step2议：(7分钟）Step3展：（20分钟）阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。Task1ATheMars2020rover,whichwillsetofffortheRedPlanetthisyear,willnotonlysearchfortracesofancientlife,butpavethewayforfuturehumanmissions,NASA'sscientistssaidonFridayastheyintroducedthevehicle.Theroverhasbeenconstructedinalarge,sterileroomattheJetPropulsionLaboratoryinPasadena,nearLosAngeles,whereitsdrivingequipmentwasgivenitsfirstsuccessfultestlastweek.ShowntoinvitedjournalistsonFriday,itisscheduledtoleaveEarthinJuly2020fromFlorida'sCapeCanaveral,becomingthefifthUSrovertolandonMarssevenmonthslaterinFebruary."It'sdesignedtoseekthesignsoflife,sowe'recarryinganumberofdifferentinstrumentsthatwillhelpusunderstandthegeologicalandchemicalsituationsonthesurfaceofMars,"deputymissionleaderMattWallacetoldAFP.Amongthedevicesaboardtheroverare23cameras,two"ears"thatwillallowittolistentoMartianwinds,andlasersusedforchemicalanalysis.Approximatelythesizeofacar,theroverisequippedwithsixwheelsliketheformerUSrover,Curiosity,allowingittotravelalongrockyland.Speedisnotapriorityforthevehicle,whichmerelyhastocoveraround200yards(about180metres)perMartianday—approximatelythe

sameasadayonEarth.Fueledbyatinynuclearreactor,ithasseven-foot-long(about2metres)articulatedarmsandadrilltocrackopenrocksamplesinlocationsscientistsidentifyaspotentiallysuitableforlife.Wearehopingtomovefairlyquickly.We'dliketoseethenextmissionlaunchedin2026wheretheroverwillgettoMars,pickupthesamples,putthemintoarocketandfinallybringthembacktotheEarth,saidWallace.NASA'sMars2020roverwillremainactiveforatleastoneMartianyear,whichisaroundtwoyearsonEarth.1.Whatdoestheunderlinedpart"pavetheway"inParagraph1mean?A.Makepreparations.B.Findsuitablelandingsites.C.Setupresearchcenters. D.Constructroads.2.WhatcanweknowabouttheMars2020rover?A.Itlooksmuchlikeacarwithsixwheels.B.ItisanupdatedversionoftheUSroverCuriosity.C.Itissolar-poweredandcancrackopenrocksamples.D.ItisabletoperformdifferenttasksonMarsinsearchofthesignsoflife.3.IfyousearchforthepassageonthewebsiteofChinaDaily,wherecanyouprobablyfindit?A.Lifestyle. B.Region. C.World. D.Culture.4.Whatisthemainideaofthepassage?A.TheMars2020roverhassuccessfullypasseditsfirsttest.B.NASAisplanninganewroundofspaceexploration.C.FuturehumanmissionsonMarsareontheway.D.AnewroverwillbelaunchedtocarryoutscientificresearchonMars.Task2BHere’salistofsomeinterestingfactsaboutstars;someyoumightalreadyknow,andfewthataregoingtobenew.Thesunisthecloseststartotheearth.Thesunisabout150millionkilometersaway.Oursun,likemostotherstars,givesoffpowerandlightbynuclearfusion,whichhappensexactlywhereit’sthehottest.Thesunisabout4.5billionyearsoldanditwillstilllastsixbillionyearsorso.Whenitrunsoutofitsfuel,itwoulddevelopintoaredstarwhenincreasinginsize.Sincestarsarebillionsoflightyearsaway,itmaybehardtorecognizethatstarsareincontinuousbattleswiththemselves.Allthestarshavetheirowngravitationalpullthatpullsthem.Thesurprisingpartisthatthenuclearfusionoccurringinsidethestartrulyproducesanoutwardpushtoresistthegravitationalforce,whichkeepsitspresentshape.Starshavedifferentcolors.Thehotteststarsaresurprisinglythesmallestonesandareblueincolor.Theirtemperaturesgotoabout12,000Kelvin.Althoughtheyellow-coloredstarsarethemiddle-sizedonesjustlikethesun,theirtemperaturesfalltoabout6,000Kelvin.Andlastly,thecoolestandgreatestonesarecoloredredandthetemperaturesofthemareabout3,000Kelvin.Whenlookingatthenightsky,wemaythinkthatstarsareuptherealone.Butdon’tbesurprisedthattheseheavenlybodiesinfactcomeinpairs.Andstarscanevencomeingroupsof3oreven4!5.Whatwillhappenwhenthesunrunsoutofitsfuel?A.Itwilldisappearslowly.B.Itwilllastsixbillionyears.C.Itwillbecomeawhitestar.D.Itwillbecomelargerinsize.6.Whatcanwelearnfromparagraph3?A.Allstarsareinastateofbalance.B.It’shardforthestarstokeeptheirshapes.C.Thestarshavethesamegravitationalpull.D.Thestarsalwaysstayinpeacewithoneanother.7.Whatdoweknowaboutthecolorofthestar?A.Itisbluewhenitisverycold.B.Itlooksredwhenitisfaraway.C.Itseemsyellowwhenitisover3,000Kelvin.D.Ithassomethingtodowithitssizeandtemperature.8.Howdoallthestarsappearinspaceinreality?A.Theyappearonlyinpairs.B.Theyappearwithoutrules.C.Theystayalonehereandthere.D.Theyappearinsmallgroupsorinpairs.Task3CSpaceiswhereourfutureis—tripstotheMoon,Marsandbeyond.Mostpeoplewouldthinkthatapartfromcomets(彗星)andstars,thereislittleelseoutthere.9Scientistsarenowconcernedthatifwedon’tcleanitup,wemayallbeingreatdanger.

Thefirstpieceofspacejunkwascreatedintheyearof1964,whentheAmericansatelliteVanguardIstoppedoperating.10However,sinceitkeptorbitingaroundtheearthwithoutanyresults,scientistsbecameincreasinglycomfortableabandoningthingsthatnolongerservedanyusefulpurposeinspace.

11Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocameras,hugefueltanks,andevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.

Themajorproblemwithspacetrashisthatitmayhitworkingsatellitesanddamagetravellingspaceships.Inadditiontothis,manypiecesofjunkmaycrashwitheachotherandbreakintopieceswhichfallbacktotheearth.12Groundstationshavebeenbuilttomonitorlargerpiecesofspacetrashtopreventthemfromcrashingintoworkingsatellitesorspaceshuttles.13Theywillstoplitteringinspaceandtocleanupthetrashalreadythere.

A.Futureplan