实验数据1\dolphins\dolphins.gml
.........\........\dolphins.txt
.........\football\football.gml
.........\........\football.txt
.........\karate\karate.gml
.........\......\karate.txt
.........\......\新建 文本文档.txt
.........\polbooks\polbooks.gml
.........\........\polbooks.txt
.........\dolphins
.........\football
.........\karate
.........\polbooks
实验数据1