题目

He dressed up and went to the party ______ invited.    A. even though    B. as if           C. even if        D. so that   答案：B设圆锥底面圆周上两点A、B间的距离为2，圆锥项点到直线AB的距离为3，AB和圆锥的轴的距离为1，则该圆锥的体积为 ．