题目

（09年武汉二中调研）半径为的球面上有A、B、C三点，AB=6，BC=8，AC=10，则球心到平面ABC的距离为          . 答案：5--- What on earth is that noise? --- Oh, the next flat ___________.A．was decoratedB．was decoratingC．is being decoratedD．is to be decorated