题干
Although he sometimes loses his temper, his students like him for it．
A：not so much
B：not so little
C：no more
D：no le
答案(点此获取答案解析）
D
A：not so much
B：not so little
C：no more
D：no le
与圆
相交于M,N 两点，若
，则k的取值范围是( )