书面表达。
前些年，随着工业的发展，南京的环境一度受到污染。但近年来，随着人们环保意识的增强，城市的面貌焕然一新。请仔细观察下面四幅图，写一篇有关南京城市变化的短文，可适当发挥，80词左右。文章的开头部分已给出。

Not many years ago, with the development of industry, the city of Nanjing was seriously polluted.
Not many years ago, with the development of industry, the city of Nanjing was seriously polluted.______________________________
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