[{"title":"( 105 个子文件 20.79MB ) 全国大学生数学建模竞赛-历年竞赛真题.rar","children":[{"title":"CUMCM-2008-problem A-Chinese.doc <span style='color:#111;'> 58.50KB </span>","children":null,"spread":false},{"title":"CUMCM-2008-problem C-Chinese.doc <span style='color:#111;'> 26.00KB </span>","children":null,"spread":false},{"title":"CUMCM-2008-problem B-Chinese.doc <span style='color:#111;'> 21.00KB </span>","children":null,"spread":false},{"title":"CUMCM-2008-problem D-Chinese.doc <span style='color:#111;'> 26.50KB </span>","children":null,"spread":false},{"title":"CUMCM-2018-Problem C-Chinese.docx <span style='color:#111;'> 19.45KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多,未全部展示</span>","children":null,"spread":false}],"spread":true}]