驾驶机动车遇到这种信号灯亮时，如果已越过停止线，可以继续通行。
参考答案：对
It was at this shop _____ I came across the picture. Why not come in and have a look? [ ]
A. that
B. which
C. what
D. where
磨削加工的主运动是( )。
A．砂轮旋转
B．刀具旋转
C．工件旋转
D．工件进给
