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假设你是张伟，请就"现在越来越多的人购买汽车"给报社编辑写一封信，发表观点
要点:
1有了小汽车，能自由来去，不用花很多时间，小汽车对于旅行比较舒适，开小汽车比骑自行车安全
2另一方面，越来越多的小汽车引起空气污染，引起交通拥挤和更多的交通事故
3建议政府要适当控制小汽车的数量To Whom It May Concern，
Nowadays， there are more and more people planning to buy their own cars The following is my opinions regarding this issue
First of all， car provide us with great convenience so that people can drive every where they want and save a lot of time Car is also a very suitable transportation tool for travel Furthermore， driving car is much safer than riding bicycles
On the other hand， the increasing number of personal cars causes severe problems， such as air pollution， traffic congestion and more accidents
Therefore， I suggest that maybe the government can control the number of cars by regulations
Yours truly，
Zhang Wei