“無車日”(Car-free Day)是一項節能環保的活動，下面請你介紹活動有關情況，并號召更多的城市和居民參與到該活動中來。
活動背景：隨著經濟的發展，更多家庭擁有私家車，造成嚴重的交通問題和環境污染。
活動時間：每年9月22日 參與者：全國108個城市
活動目的：提高人們節約能源與保護環境的意識
活動內容：倡議人們選用公共汽車、自行車或步行方式
活動效果：得到全國人民的支持, 取得巨大成功
【寫作要求】
只能用5個句子表達要表達的內容。
【評分標準】
句子結構準確；信息內容完整；篇章結構連貫。
With the development of the economy, more families have bought private cars， thus leading to heavier traffic problems and more serious air pollution. To raise public awareness of energy saving and environmental protection, Car-free Day is launched in 108 cities in China on September 22 every year. On that day, people are encouraged to take public transport，ride bicycles or walk.The campaign has gained much support all over the country, which is a real success. I hope more cities and their residents will take part in this type of activity.解析:
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