按照中文大意写成语言规范,前后连贯的文章：
汶川过去是一个不知名的小城市，它距离成都159公里。就在2008年5月12日约下午两点半，汶川发生了一次强烈地震。许多房屋倒塌，成千上万的人无家可归。一些老师和家长为了救孩子牺牲了。全国都关心汶川，送来了救援人员。人们相信汶川有更美好的未来。
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【答案】 Wenchuan used to be an unknown small city, which is 159 kilometres away from Chengdu. It was at about 2:30 pm on May 12, 2008 that a strong earthquake struck Wenchuan. So many houses fell down that thousands of people became homeless. Some teachers and parents lost their lives in order to save the children. However , the whole nation was concerned about Wenchuan, so they sent rescue workers. Generally , people believed/believe that Wenchuan would/will have a great future.