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1. Who is this book suitable for reading? This book is suitable for preparation for the speech understanding and expression of the National Civil Service Examination, the Civil Service Examination of various provinces and cities, and the "Administrative Vocational Aptitude Test" for selected students, tobacco systems, and public institutions. It can also be used to prepare for the "Public Subjects" speech understanding and expression test for civilian personnel recruited by the entire military to the public. It can also be used to prepare for the State Grid Recruitment Examination (Speech Comprehension and Expression). 2. The content and features of this book. The biggest feature of this book is the use of dialectical thinking and logical methods to solve problems.