2019版一轮优化探究英语（北师大版）练习：选修八unit24societyword版含答案

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1、课时作业（二十九）题型组合练——练规范（闻读理鮮+语糸填空+短文改错+书面表达）限时：55分钟I.阅读理解ADoPeru"spotatoeshavetherightstuff?That'sthequestionscientistswillbeaskinginLimanextmonth,whenaselectionofpotatoeswillbeginundergoingteststodeterminewhethertheyarefittogrowonMars.NASA,theUSspaceagency,isconductingthepioneeringexperiment

2、togetherwithLima'sInternationalPotatoCente匚TheywillcultivateahundredselectedvarietiesinMars-likeconditionsthatcouldeventuallypavethewayforbuildingadomeontheRedPlanetforfarmingthevegetable.Oftheselectedcandidates,40arenativetotheAndesMountains,conditionedtogrowindifferentecologicalzones,ca

3、nstandsuddenclimatechangesandreproduceinrockyareas・Theother60areimprovedvarieties,abletosurvivewithlittlewaterandsalt.Theyarealsoimmunetoviruses.Thosethatpassthetestsmustmeetafinalcriterion—theymustbeablenotonlytogrowwellonMarsbutalsoreproduceinlargequantities.“We'realmost100percentcertai

4、nthatmanyoftheselectedpotatoeswillpassthetests,”saidJulioValdiviaSilva,aPeruvianNASAastrobiologist（太空生物学家）whoistakingpartintheambitiousproject.Thescientistsplantotransport10（）kilosofsoiltoalabinLimathatwillsimulatethecomplexMartianatmosphere一whichcontainsmostlycarbondioxide—andexposeittoe

5、xtremeultraviolet（紫夕卜线白勺）radiation.Ifthevarietiesselectedfornextmonth5sexperimentdon'tadapttothedesertsoil,theresearcherswillintroducenutrients,whichwillbeprovidedbyradiatioruInfutureyears,NASAplanstobuildaMarsresearchcenterinthePeruviandesert.ItwouldcreateaperfectcopyoftheMartianlandscap

6、eandatmosphereforfutureresearchintospacefarmingthatcouldservemannedmissionstoMarsandotherplanetsinthesolarsystem.［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.DeterminethevarietiesofpotatoesinPeruC-NASAistobuildaMarsrese

7、archcenterinPeruD・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・Fortykindsofpotatoescansurvivewithlittlewaterandsalt.