写一篇关于城市交通的英语作文 Traffic congestion has long been a problem of great concern and complaint in big cities.It has caused a lot of inconvenience to people's life and work.For example，people have to set off well in advance to get to work on time and come back very late when their work is over.There are many causes for this problem，but the following may be the most important ones.The first cause is the great increase in the number of private cars.Cars take up space but they carry fewer people.Some private car drivers，ignoring traffic regulations，drive only for the sake of their own convenience，blocking the way of other public transportation vehicles.The second cause is the slow and inefficient construction and improvement of the roads and streets.With a large population and numbers of automobiles increasing，some roads still remain unimproved，which will surely lead to problems.The last cause is the insufficient management of the traffic system and the people's lack of awareness of traffic regulations。.
各地方汽车牌照的第二位字母代表什么意思？ 第一个字母是城市或地区标识.如：陕西[陕]A 西安市 B 铜川市 C 宝鸡市 D 咸阳市 E 渭南市 F 汉中市 G 安康市H 商洛市 J 延安市 K 榆林市 U 省直系统(已取消)V 杨凌高新农业示范区第二个字母则没什么代表意义只是按顺序排下来的A-Z
