为了有创意地完成老师布置的调查任务，蔡波波可花了不少心思，简直像个私家侦探。平心而论，她的调查内容都是货真价实的，她的调查报告也写得非常完美，遗憾的是，当她把这些调查结果公布于众的时候，却被同学嘲笑为"大义灭亲"。
蔡波波没想到会是这样，她的心都快要碎了。
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