题目

— What does your uncle do? — He is a _____________. He works in a hospital. A . doctor B . teacher C . cook D . driver 答案：A（2011•衢州）如图，OP平分∠MON，PA⊥ON于点A，点Q是射线OM上的一个动点，若PA=2，则PQ的最小值为（　　）A．1B．2C．3D．4