题目

已知点(－2，3)与抛物线y2=2px(p＞0)的焦点的距离是5，则p的值为___________. 答案：解析:抛物线的焦点为(,0).由=5,得p=4.答案:4Our country encourages more students football．Now many footballclubs have been set up in schools．A.playB.playingC.to playD.will play