{"lablename3":"高二数学","title":"教室内有一把尺子，无论怎样放置，地面上总有这样的直线与该直尺所在直线（ ）...[高二][数学]","mkid":"","lablename2":"高二年级","pagetype":3,"infoid":"1340413","infotype":0,"lablename1":"高中"}