2019版一轮英语（人教版）（话题部分）练习： 选修六 Unit 2 Poems

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1、Ⅰ.阅读理解ADoPeru'spotatoeshavetherightstuff?That'sthequestionscientistswillbeaskinginLimanextmonth,whenaselectionofpotatoeswillbeginundergoingteststodeterminewhethertheyarefittogrowonMars.NASA,theUSspaceagency,isconductingthepioneeringexperimenttogetherwit

2、hLima'sInternationalPotatoCenter.TheywillcultivateahundredselectedvarietiesinMarslikeconditionsthatcouldeventuallypavethewayforbuildingadomeontheRedPlanetforfarmingthevegetable.Oftheselectedcandidates,40arenativetotheAndesMountains,conditionedtogrowindi

3、fferentecologicalzones,canstandsuddenclimatechangesandreproduceinrockyareas.Theother60areimprovedvarieties,abletosurvivewithlittlewaterandsalt.Theyarealsoimmunetoviruses.Thosethatpassthetestsmustmeetafinalcriterion—theymustbeablenotonlytogrowwellonMarsb

4、utalsoreproduceinlargequantities.“We'realmost100percentcertainthatmanyoftheselectedpotatoeswillpassthetests，”saidJulioValdiviaSilva,aPeruvianNASAastrobiologist(太空生物学家)whoistakingpartintheambitiousproject.Thescientistsplantotransport100kilosofsoiltoalabi

5、nLimathatwillsimulatethecomplexMartianatmosphere—whichcontainsmostlycarbondioxide—andexposeittoextremeultraviolet(紫外线的)radiation.Ifthevarietiesselectedfornextmonth'sexperimentdon'tadapttothedesertsoil,theresearcherswillintroducenutrients,whichwillbeprov

6、idedbyradiation.Infutureyears,NASAplanstobuildaMarsresearchcenterinthePeruviandesert.ItwouldcreateaperfectcopyoftheMartianlandscapeandatmosphereforfutureresearchintospacefarmingthatcouldservemannedmissionstoMarsandotherplanetsinthesolarsystem.[语篇解读]　本文为

7、一篇新闻报道。美国国家航空航天局(NASA)将与国际马铃薯研究中心联手，进行一项开创性实验。1．Whatisthebesttitleofthepassage?A．TransportpotatoestoPeruB．DeterminethevarietiesofpotatoesinPeruC．NASAistobuildaMarsresearchcenterinPeruD．NASAistosimulategrowingpotatoesonMarsinPeru解析：标题归纳题。通读文章可知美国国家航空航天局(

8、NASA)计划与国际马铃薯研究中心联手，进行一项开创性实验，即在秘鲁培育可在火星上种植的土豆。故答案为D项。答案：D2．Accordingtothethirdparagraph,whichofthefollowingstatementsisTRUE?A．Fortykindsofpotatoescansurvivewithlittlewaterandsalt.B．ManytypesofpotatoestobeplantedonMarsaredevelope