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准备好了吗？模拟测试一下吧反馈问题即便你从两边都看不到火车，也要等待信号灯熄灭才能前进。
