【人教版】2020版一轮优化探究英语 话题专练15 选修六 Unit 2 Poems 含答案.doc

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

2、alPotatoCenter.TheywillcultivateahundredselectedvarietiesinMarslikeconditionsthatcouldeventuallypavethewayforbuildingadomeontheRedPlanetforfarmingthevegetable.Oftheselectedcandidates,40arenativetotheAndesMountains,conditionedtogrowindifferentecologicalzones,canstandsudde

3、nclimatechangesandreproduceinrockyareas.Theother60areimprovedvarieties,abletosurvivewithlittlewaterandsalt.Theyarealsoimmunetoviruses.Thosethatpassthetestsmustmeetafinalcriterion—theymustbeablenotonlytogrowwellonMarsbutalsoreproduceinlargequantities.“We'realmost100percen

4、tcertainthatmanyoftheselectedpotatoeswillpassthetests，”saidJulioValdiviaSilva,aPeruvianNASAastrobiologist(太空生物学家)whoistakingpartintheambitiousproject.Thescientistsplantotransport100kilosofsoiltoalabinLimathatwillsimulatethecomplexMartianatmosphere—whichcontainsmostlycarb

5、ondioxide—andexposeittoextremeultraviolet(紫外线的)radiation.Ifthevarietiesselectedfornextmonth'sexperimentdon'tadapttothedesertsoil,theresearcherswillintroducenutrients,whichwillbeprovidedbyradiation.Infutureyears,NASAplanstobuildaMarsresearchcenterinthePeruviandesert.Itwou

6、ldcreateaperfectcopyoftheMartianlandscapeandatmosphereforfutureresearchintospacefarmingthatcouldservemannedmissionstoMarsandotherplanetsinthesolarsystem.[语篇解读]　本文为一篇新闻报道.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．De

7、terminethevarietiesofpotatoesinPeruC．NASAistobuildaMarsresearchcenterinPeruD．NASAistosimulategrowingpotatoesonMarsinPeru解析：标题归纳题.通读文章可知美国国家航空航天局(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

8、．Fortykindsofpotatoescansurvivewithlittlewaterandsalt.B．ManytypesofpotatoestobeplantedonMarsaredevelope