题目内容
“无车日”(Car-free Day)是一项节能环保的活动，下面请你介绍活动有关情况，并号召更多的城市和居民参与到该活动中来。
活动背景：随着经济的发展，更多家庭拥有私家车，造成严重的交通问题和环境污染。
活动时间：每年9月22日 参与者：全国108个城市
活动目的：提高人们节约能源与保护环境的意识
活动内容：倡议人们选用公共汽车、自行车或步行方式
活动效果：得到全国人民的支持, 取得巨大成功
【写作要求】
只能用5个句子表达要表达的内容。
【评分标准】
句子结构准确；信息内容完整；篇章结构连贯。
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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