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人教版小学英语四年级上册第二单元Part A Let's learn 原声动画
人教版小学英语四年级上册Unit 2 My schoolbag，第二单元Part A Let's learn原声动画，建议反复跟读，进行口语及听力练习！
人教版小学英语四年级上册22/23
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