- 问题详情:PassageAYuanLongpingwasborninBeijingin1930.Hedevelopedhisnewkindofricein1974,whichhelpedmanycountriesgrowmorericethaneverbefore.Soheiscalled"theFatherofRice."PassageBDearDiana,Lastweek,wehadahistoryexambutIdidn'tstudyforit.Iwasreallyworrie...
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