题目

. However hard I tried to explain it to her, she just couldn’t understand. I found her impossible to __ . A. get over  B. get along with  C. get through  D. get to 答案：B已知关于x的一元二次方程（k-2）2x2+（2k+1）x+1=0有两个不相等的实数根，则k的取值范围是（　　）A．k＞43B．k≥43C．k＞34且k≠2D．k≥34且k≠2