题目

 It was more than he could bear when his old friend ______ him to accept a cigarette.      A. invited          B. urged       C. persuaded         D. agreed 答案：B某圆拱的示意图如图所示．该圆拱的跨度AB是36m，拱高OP是6m，建造时，每隔3m需要一个支柱，求A2P2的长（精确到0.01）．