题目

 在Rt△ABC中，∠C=90°，AB=5cm，BC=3cm，以A为圆心，以4cm为半径作圆，则直线BC与⊙A的位置关系是（    ）    A. 相交    B. 相切    C. 相离    D. 无法确定  答案：B解析:略  I enjoy playing computer games, but I can't _____ too much time _______that.A. take; doing B. spend; doing C. spend; on doing D. take; to do