题目

 ---The drunk driving which resulted in five deaths could have been avoided.    ---Exactly. I wonder why nobody ______ him from driving.    A. has stopped         B. had stopped        C. was stopping       D. stopped 答案：D（2004•金华）圆柱的轴截面是（ ）A．等腰三角形B．等腰梯形C．矩形D．圆