题目

On the way home I met my friend John, from _______ home the thief had stolen a computer.A. whom           B. which               C. that              D. whose 答案：D圆锥的轴截面是正三角形，则它的底面积与侧面积之比为（　　）A．1：1B．1：2C．1：4D．1：3