三角形中,到三边距离相等的点是:() A.三条高线的交点 B.三条中线的交点 C 发布时间:2017-05-01 18:53 │ 来源:www.tikuol.com 题型:选择题 问题: 三角形中,到三边距离相等的点是:( )A.三条高线的交点B.三条中线的交点C.三条角平分线的交点D.三边垂直平分线的交点
题型:选择题 The researchers found clear and convincing evidence _________ happiness is the key when it comes to better health and longer lives. [ ]A. where B. whether C. how D. that 查看答案