最近你所在的学校选出一男一女两名学生作为学校的形象大使，希望他们可以成为其他学生学习的模范。为此学生中展开了激烈的争论。请你根据下列提示，以“Do we need image ambassadors?” 为题给某英语报纸写一篇文章。
注意：1. 词数: 120左右。2. 词汇： image ambassador 形象大使。
3. 短文的开头已为你写好，不计入总词数。 
　　Recently my school has chosen a boy and a girl to be its image ambassadors and hopes that others can learn from the two model students.
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