如果没有限速标志，限速为100公里/小时，除非：Where there are no speed limit signs, the speed limit is 100 km/h, unless:路边有路灯。There are street lights along the road.你行驶的道路是碎石路。The road you are driving on is gravel.有紧急情况，这意味着限速不适用。There's an emergency, which means speed limits don't apply. 上一题下一题 准备好了吗？模拟测试一下吧反馈问题