高中2021 届高考英语“中国元素”之阅读理解中国科技（一）一、Today,Chinahasconducteditsfirst3Dprintingexperimentinspaceinanewly-launchedspacecraft,whichwasputintolow-EarthorbitbyChina'sLongMarch5Bheavyliftcarrierrocket.VideobroadcastonCCTVshowedthattheprinterhasprintedaflatsectionofahoneycomb-shaped（蜂巢状的）structureaswellasasymbolofChinaAerospaceScienceandTechnologyCorp,theparentcompanyoftheChinaAcademyofSpaceTechnology.Theexperimentwasdonebya3Dprinter,developedandbuiltbyitsBeijingSpacecraftsManufacturingFactoryinsidetheprototypeofChina'snew-generationmannedspacecraft.Theprinter,namedtheSpace-BasedCompositeMaterial3DPrintingSystem,usescarbonfiber-reinforcedmaterialstoautonomouslyprintobjects.Itisinstalledinthere-entrymoduleoftheexperimentalspaceship,andwillbebroughtbacktoEarthoncethemodulereturns.Theprinterfeaturesadvancedtechnologiesinmaterialmodeling,precisioncontrolandautomation.Oncethespace-based3Dprintingtechnologybecomesoperationallyready?itcanextensivelybenefitspaceprogramsasastronautscanuseittomanufacturealotofthingstheycurrentlyneedtoobtainfromresupplyflightsbycargospacecraft.WangYanan,editor-in-chiefoftheAerospaceKnowledgemagazine,saidthe3Dprinterwillbeveryusefulinextendedspacemissions,suchasthoseinaspacestation,becauseitwillallowastronautstomakecomponentsquicklyandconvenientlyinspace.Thetechnologywillsavefuturespacejourneysconsiderableresourcesandcosts.Infact,thedeviceisnottheonlyrepresentativeof3Dprintingonboardtheprototype.ACubeSatdeployer,designedandmadethrough3DprintingbyCoSatsSpaceTechnology,isalsocarriedbythespacecrafttochecktheadaptabilityof3D-printedequipmentinspace.CoSatsChiefOperatingOfficerBaiRuixuesaidthe3D-printeddeployerismuchlighterandstrongerthanitscounterpartsanditwillhavehugepotentialinthespaceindustry.1.WhatdidthevideobroadcastonCCTVshowtotheaudience?A. Thenameandtheshapeofthe3Dprinting.高中B. Thesignificanceofthe3Dprintingtechnology.C. Theprocessandtheproductsofthe3Dprinting.D.Therelationshipbetweenthetwocompanies.2.Whatifacom...
