Unit 1 International Organizations
Part Ⅰ Lead-in
Part Ⅱ Conversation
Part Ⅲ Business News
Part Ⅳ Passage
Part Ⅴ Mini-Talk
Part Ⅵ Oral Practice
Unit 2 Trade Barriers
Part Ⅰ Lead-in
Part Ⅱ Conversation
Part Ⅲ Business News
Part Ⅳ Passage
Part Ⅴ Mini-Talk
Part Ⅵ Oral Practice
Unit 3 Product Quality
Part Ⅰ Lead-in
Part Ⅱ Conversation
Part Ⅲ Business News
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