In some cities, more road accidents occur each year.People are therefore much con cemed about the traffic security problems.Some people say that traffic accidents are unavoidable.They argue that nowadays traffic is much heavier than it used to be.Modem society lives on the basis of various kinds of vehicles. So it is impossible to eliminate traffic accidents.
在一些城市里，每年要发生多起交通事故。因此，人们非常关心交通安全问题。 有人说交通事故是不可避免的。他们认为现在的交通比过去拥挤多了。现代社会是建立在各种不同的车辆之上的，因此，减少交通事故是不可能的。
