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Introduction 4
Table of Contents 5
How to Study 6
Unit 1 Aging Society 9
Unit 2 Virtual Reality 25
Unit 3 Becoming Rich 41
Unit 4 Balanced Diet 57
Appendix 74
Words＆Expressions 74
Power Up!Listening_Dictation＆Script 81
Level 6 Book 3 Syllabus 84