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一、调查目的1.了解同学养宠物的种类2.调查同学所养宠物死亡的原因二、调查方法和途径(一、二都是前言,对这个调查报告作必要的说明,让读者明白这个调查的目的)
First, the purpose of the investigation 1. Understand the types of pets kept by students 2. Investigate the reasons for the death of pets pet students Second, the survey methods and ways (one or two are preface, the survey report to make the necessary explanations so that readers understand this survey the goal of)