题目

圆的半径为13cm，两弦AB∥CD，AB=24cm，CD=10cm，则两弦AB，CD的距离是（     ）A．7cmB．17cmC．12cmD．7cm或17cm 答案：D解析:略 Jim told us all that _______ he said so at the meeting was right.A. all B. whatC. all that D. that