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Unit 1 A Changing World
Unit 2 Brilliant Thoughts
Unit 3 A Green Earth,a Better Home
Unit 4 A Colorful World of Words
Unit 5 A Path Toward a Better World
Unit 6 A Rising Self
Notes to the Text
Grammar
Tapescripts
Words in Each Unit
Vocabulary
Useful Expressions in Each Unit
English Names
Names of Places
Irregular Verbs
American English and British English