研究方法分为五个部分：第一、文献资料考察——了解前人对相关课题的研究状况、汇集有关研究成果；
Research methods are divided into five parts: firstly, literature research-in order to find out the predecessors' research state of relevant topics, and collect relevant research achievements;
首先，广泛查阅文献资料，对前人所做研究作细致的归类和梳理。
First of all, access to a wide range of literature, detailed classification and grooming senior research results.
绪论部分，阐释了本文选题及意义，主要研究内容，前人研究概况及所依据的文献资料。
Introduction of topics and explain the significance of this paper, the main contents of his predecessors Research and is based on the documentation.
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