{"lablename3":"高二数学","title":"用一个平面去截一个几何体，得到的截面是三角形，这个几何体可能是（）A.圆柱B...[高二][数学]","mkid":"","lablename2":"高二年级","pagetype":3,"infoid":"1338725","infotype":0,"lablename1":"高中"}