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Introduction 4
Table of Contents 5
How to Study 6
Unit 1 Pollution 9
Unit 2 Genius 25
Unit 3 Commercials 41
Unit 4 The Korean Wave 57
Appendix 74
Words＆Expressions 74
Power Up！Listening_Dictation＆Script 81
Level 6 Book 4 Syllabus 84