{"lablename3":"二年级数学","title":"用1厘米刻度对齐物体的一端，5厘米刻度对齐另一端，物体长度为4厘米.（_）...[二年级][数学]","mkid":"","lablename2":"二年级","pagetype":3,"infoid":"2577795","infotype":0,"lablename1":"小学"}