必考题
如果铁路交叉道口红灯亮起，你该怎么做？What must you do when red lights are flashing at a railway level crossing?
左右看看，如果没有火车那么通过道口Check both directions and cross if there are no trains coming
停车等待红灯熄灭后再前进Stop until the lights stop flashing
火车一过道口就前进Drive on as soon as the train has passed