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四年级 - 人教版 - 单词学习
Unit 1 Welcoming a Friend
Unit 2 At School
Unit 3 In a Supermarket
Unit 4 Field Trip to an Aquarium
Unit 5 Sports Day at School
Unit 6 School Fair
Culture 1 Happy Birthday
Culture 2 Easter
Culture 3 Christmas
Culture 4 More Holidays around the World
