题目

--- Do you know Peng Liyuan？        --- Of course, she is    First Lady of China,        famous singer. A. a; a         B. the; a       C. the; the         D. a; the 答案：B11．已知关于x的分式方程$\frac{2x+m}{x-2}$=3的解是正数，则m可能的取值为（　　）A．-7B．-6C．-5D．-4