题目

On a very cold winter day，there was a drunken guy（41）    decided that he would go fishing on the ice in the lake．He packed up all his fishing tools and set out in search of a （42）           （suit） s pot．Eventually he came across a huge area of ice and decided that since he（43）        （come） to the lake，he would stop there and gave it （44）    go．He took out a saw（锯） from his tool box，and started to saw a hole in the ice．（45）         （sudden），a loud voice beside him，There is no fish here．came．The drunken m如图所示，在直角梯形ABCD中，若∠A=90°，AD=CD=6，将一等腰直角三角板的一个锐角的顶点与点C重合，将此三角板绕着点C旋转时，三角板的两边分别交AD边于Q，交直线AB于P，若PQ=5，则AP的长为________．