必修第一册
Welcome Unit
Unit 1 Teenage Life
Unit 2 Travelling Around
Unit 3 SportsAnd Fitness
Unit 4 Natural Disasters
Unit 5 Language Around The World
必修第二册
Unit 1 Cultural Heritage
Unit 2 Wildlite Protection
Unit 3 The Internet
Unit 4 History And Traditions
Unit 5 Music
必修第三册
Unit 1 Festwals And Celebrations
Unit 2 Morals And Virtues
Unit 3 Diverse Cultures
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