已知椭圆M：（x﹣2）2+y2=4，则过点（1，1）的直线中被圆M截得的最短弦长为2 2 ．类比上述方法：设球O是棱长为3的正方体ABCD﹣A1B1C1D1的外接球，过AC1的一个三等分点作球O的截面_刷题宝

题干

已知椭圆M：（x﹣2）²+y²=4，则过点（1，1）的直线中被圆M截得的最短弦长为2 2 ．类比上述方法：设球O是棱长为3的正方体ABCD﹣A₁B₁C₁D₁的外接球，过AC₁的一个三等分点作球O的截面，则最小截面的面积为（）

A：π

B：4π

C：5π

D：6π

上一题下一题 0.0难度选择题更新时间:2013-06-04 02:55:18

答案(点此获取答案解析）

D

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