ManyscientistsarenowexploringtheideaofgoingtoliveonMars.SomeotherscientistsfromtheMASAAMESCenter(美国宇航局)havealreadystartedthecreationofa“Marstown”andmanyothersareinfactalreadyexperimentingwithit.Ofcourse,theseexperimentsaredoneonEarthitselfbutthis“Marstown”hasanenvironmentpracticallylikethatofMars. TheastronautsworkinginthesetownsweartheirspacesuitandalsodoeverythingtheywouldreallyhavetocarryoutiftheyevergotoMarsinthefuture. ButMarswouldbelikeEarth,atemporary(临时的)placeforhumans.WhentheSunstartsswallowingup(吞掉)theplanets,MarswilldisappearonlyhoursafterEarth.SoMarsonlyseemstobetheidealplacetospreadthehumanbeings.ItisalsoagoodlocationtosendhumansifeverthereisadisasteronEarth.Bysayingdisaster,Imeanasteroids(小行星)hittingandthingslikethat. IfwehumansdonotwanttodisappearwhenEarthorMarsgetsswallowedup,wewillhavetogoandlivebeyondthesolarsystem.Butarethereanyplanetsoutsideoursolarsystempreparedtosupportlife?Astronomers’answeris: “IfEarthcansupportlife,whycan’totherplanetsdothesametoo?AstronomershavealreadydiscoveredaJupiter(木星)-likeplanetorbitingaSun-likestar,sowhynotanEarth-likeplanetorbitingaSun-likestar? Toachievethisgoalthough,manyotherproblemshavetobetakenintoconsideration.Howdowetransform(改造)adustyplanetlikeMarsintoonemoreorlesslikeourEarth?Howshouldwegoon?Thereisstillalongwaytogo. 小题1:The“Marstown”mentionedinthepassageis___________ |
A.aresearchbaseonMars. |
B.anexperimentallabbuiltonEarth. |
C.astrangeplaceonMars. |
D.atownexistinginscientists’imagination |
小题2:Wecanknowfromthepassagethatastronomersprobablythink____________
A.itisimpossibletotransporthumanstootherplanets. |
B.theremaybeanEarth-likeplanetoutsidethesolarsystem |
C.humanswillmovetothenew-foundJupiter-likeplanet |
D.there’snoneedforhumanstomovebeyondthesolarsystem. |
小题3:WhywouldMarsonlybe