题目已知正比例函数y=(2m−1)xy=\left(2m-1\right)xy=(2m−1)x的图象上两点A(x1A(x_{1}A(x1,y1)y_{1})y1)、B(x2B(x_{2}B(x2,y2)y_{2})y2),当x1<x2x_{1} \lt x_{2}x1<x2时,有y1>y2y_{1} \gt y_{2}y1>y2,那么mmm的取值范围是（ ）A.m<2m \lt 2m<2B.m>0m \gt 0m>0C.m＜12m＜\frac{1}{2}m＜21D.m＞12m＞\frac{1}{2}m＞21知识点：正比例函数的图象章节：函数 / 一次函数
