根据中文意思补全句子。

阅读下面的材料，根据要求写一篇不少于800字的作文。

    材料一：林语堂先生说过：中国人的脸面，不但可以洗，可以刮，还可以争，可以留，有时好像争面子是人生的第一要义，甚至可以倾家荡产而为之。

    材料二：时值暑假，来自京沪一些医院的整形外科统计数字显示，青少年占到了就诊人数的60%至70%，就诊的青少年除了极少数因为无耳、兔唇等原因必须进行修补以外，绝大多数是为了“锦上添花”，甚至有的拿着一些名模明星的照片前来就诊，照片上的形象就是其整形标准。社会心理学家指出，由于缺乏人生阅历和渴望被周围人承认的双重原因，青少年比成年人更容易被“面子”观念困扰。

    要求：请全面理解材料，但可以从一个侧面、一个角度构思作文；自主确定立意，确定文体，确定标题；不要脱离材料内容或其含意范围作文，不要套作，不得抄袭；不少于800字，诗歌除外。

A Policeman and a Thief  
One day a policeman was taking a thief to the city . On the way , they saw a shop . The thief said . “ Let me go into the shop to buy some bread . We can eat it in the train . ”
The policeman agreed . The thief went into the shop and ran out of the back door . When the policeman knew that , he began to look for the thief everywhere . At last the policeman caught(抓获) thief again . They went on to the city . On the way they came to the same shop . The thief wanted to buy some bread again . “Oh , no . ” said the policeman , “You did that before , and you ran away . This time I^’ll go into the shop and buy bread . You must wait here for me . ”