A:(22,0)
B:(52,0)
C:(62,0)
D:(3,0)
形如半圆型的量角器直径为4cm,放在平面直角坐标系中(量角器的中心与坐标原点O重合,零刻度线在x轴上),连接60°和120°刻度线的外端点P、Q,线段PQ交y轴于点A,则点A的坐标为 ( )
When the lights were red, we must stop ____ (walk).