Peoplewhodonotgetenoughvitamin-查字典问答网

来自李健东的问题

　　PeoplewhodonotgetenoughvitaminAintheirdietmaydevelopnightblindness．ButinthedevelopingworldalackofvitaminAcausesmuchmoreseriousharmtochildren．TheWorldHealthOrganizationlinksthelackofvitaminAtoasmanyas250

　　OneexcellentsourceofvitaminAisfoundinsweetpotatoeswithorangeflesh．Orangesweetpotatoescontainhighlevelsofbeta-carotene（胡萝卜素），whichourbodycanchangeintovitaminA．Expertssayorangesweetpotatoesspeciallybred（育种，培植）forgrowingconditionsinAfrica

　　couldhelpsolvethelackofvitaminAthere．

　　But，first，morepeoplewillneedtobepersuadedtoeatthem．JanLowwiththeInternationalPotatoCenter，aresearchorganizationsaysthesweetpotatoneedsabetterimageinAfrica．JanLowsays，…Wedohaveanimageproblemwithsweetpotatoingeneralinsub-SaharanAfrica．Itisseenasacropofthepoor．"MsLowexplainsthatsweetpotatoesaremainlygrownbypoorwomentofeedtheirfamiliesincaseanothercropfails．ThesweetpotatoescommonlygrownifAfricahavewhiteoryellowflesh．But，moreimportantly，theyarelowinvitaminA．

　　JanLowtookpartinaprojecttostudyhowbesttomarketorangesweetpotatoestoAfricans．SheworkedonaninformationcampaigninMozambiqueandUganda．Thecampaignincludedradiomessagesaboutthenutritionalbenefitsoftheorangesweetpotato．Theyadvertiseditsabilityto"fightdiseases，makeyoustrong，clearyourskinandmakeyoulookhealthy．"Inareaswithoutradio，thecampaignersspreadthemessagethroughcommunitytheater．Theperformancesincludedsinging，dancingandstorytelling．Andeverywheretheywent，thecampaignersworeorangeT-shirtsandhats．Theyevendroveorangevehicles．JanLowsaysthecolormadeiteasiertogainpublicattention．

　　DanGustafsonheadstheWashingtonofficeoftheUnitedNationsFoodandAgricultureOrganization．Hepointstoeffortsinthepasttoincreasethepopularityofothernutritiouscrops．Hesaysmostoftheseeffortsfailedbecauseorganizersofthecampaignsdidnotconsiderwhatpeoplewantedtoeat．ButMr．GustafsonseesabetterchancefortheeffortstoincreasethepopularityoftheorangesweetpotatoinAfrica．Foronething，exceptforthecolor，thevegetableissimi

1回答

2020-05-2922:17

我要回答

提示：回答问题需要登录哦！

提交

沈挺

　　66．B理解推断题．根据第一段PeoplewhodonotgetenoughvitaminAintheirdietmaydevelopnightblindness．ButinthedevelopingworldalackofvitaminAcausesmuchmoreseriousharmtochildren．可知在饮食中没有得到足够的维生素A的人可能会发展成夜间失明．但在发展中国家，缺乏维生素A对儿童造成更严重的伤害．由此可知，作者在第一段中想告诉我们：人们应该在他们的饮食中得到足够的维生素A．故选B．

　　67．A细节理解题．根据第二段Orangesweetpotatoescontainhighlevelsofbeta-carotene（胡萝卜素），whichourbodycanchangeintovitaminA．可知橙色甘薯中含有高浓度的β-胡萝卜素，我们的身体可以将其转化成维生素A．故选A．

　　68．B细节理解题．根据第三段JanLowwiththeInternationalPotatoCenter，aresearchorganizationsaysthesweetpotatoneedsabetterimageinAfrica．可知JanLow为国际马铃薯中心工作．故选B．

　　69．D词义辨析题．根据第五段Hepointstoeffortsinthepasttoincreasethepopularityofothernutritiouscrops．可知DanGustafson指出过去的努力提高了其他营养作物的欢迎度．由此推知"pointsto"的意思是"指出，提及"．故选D．

　　70．A主旨大意题．全文主要讲述了为了说服越来越多的人吃红薯，需要在非洲给红薯建立一个更好的形象．故选A．