文章第一部分为概述，概括介绍论文选题的原因及意义，当前国内外研究该领域的主要趋势及论文研究的主要内容和主要方法。
The first part contains an overview of the causes and significance of papers, the domestic and international trends in the field of research papers and the main content of papers.
前言部分说明论文选题的原因、意义，论文写作的过程及材料来源，论文所采用的研究方法，以及致谢。
The preface includes the reasons and significance that I choice this thesis, the procedure of composing, the sources of data, the method of studying and acknowledgement.
前言介绍了选题的原因、目的、意义及论文的大体框架。
The foreword introduced the selected topic reason, the goal, the significance and the thesis roughly the frame.
第一部分介绍了本研究的选题目的、原因及选题意义。
The first part introduces the reason why this study was chosen and its significance.
本文的主要内容分为以下几个部分：绪论部分：对本论题的选题原因、国内外的研究现状及研究的意义与价值进行较深入的论述。
This work was divided into several parts described below:Introduction: To discuss the reason, status all over the world and the value of the topic.
本文的主要内容分为以下几个部分：绪论部分：对本论题的选题原因、国内外的研究现状及研究的意义与价值进行较深入的论述。
This work was divided into several parts described below:Introduction: To discuss the reason, status all over the world and the value of the topic.
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