2019-2020年高三二模考试英语汇编 阅读C篇 含答案

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1、2019-2020年高三二模考试英语汇编阅读C篇含答案(崇明)(C)Lotsofbacteriacangrowintheseeminglyunfriendlyenvironmentunderglaciers(冰川),aregionformerlyconsideredfreeofmuchbiology.ThisfindingbyglaciologistsworkinginSwitzerlandcouldhelpsolvesomepuzzlesofthelasticeageandpointthewayf

2、orfindinglifeonotherplanets.Bacteriawithoddlifestyleshavebeenunderincreasingstudylately,withmostresearchfocusedonthespecieswhichpreferhothomes.Thenewstudyshiftsattentiontotheotherendofthethermometer(温度计).Theexcitingthingistheideaofpushingthewindowofacc

3、eptablebacterialenvironmentsalittlebitfartheropen.ResearchershavepreviouslycollectedsmallnumbersofbacteriafromiceinAntarcticaandGreenland,buttheycouldnotdeterminewhetherthesewereactivebacteriaorjustfrozencellsblowninbywind.Incontrast,theearthbeneathtwo

4、Swissglaciersharborslargecoloniesofbacteria—hundredsofmillionsofcellspergram—thatappeartobegrowingat0℃.Scientistsfolloweduponthesefindingsbytakingsamplesofice,water,andearthattwomountainglaciers.Theyfoundthatearthbeneaththeglacierscontainedmuchlargerpo

5、pulationsofbacteriathandidsurfaceandinnerpartofice.Thosefindingsindicatethatthebacteriaweregrowingatthebottomoftheglacierandarenotsomethingwashedinwhilethescientistsdrilledthroughtheice.Lookingatthebacteriaunderamicroscope(显微镜),theresearchersfoundthatm

6、anywereintheprocessofdividing,andhealthyundertheice.Thebacteriamightbreakdownmineralsandplantremainsoriginallyburiedbeneaththeglacierorlaterwashedinbywatergoingslowlythroughtheice,scientistssay.“Someoftheassumptionswehavemadeinthepastnowmustbeseriously

7、questioned,”sayresearchers.“IfbacteriacanliveunderglaciersonEarth,whynotonotherplanets?Thenewstudypointsoutinmanywaysthatthebottomsofglaciersareprobablyquitegoodenvironmentsfromthepointofviewofbacteria.So,maybethebottomoftheicesheetsonotherplanetswould

8、beasensibleplacetotryifyou’regoingtolookforlifeonthem.”72.Whatisspecialaboutthenewstudyonbacteria?A.Itfocusesonthebacteriainhotenvironments.B.Itopensthewindowsofthebacteriallabswider.C.Itpaysmoreattentiontothebacteriainthethermometer.D.