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3. 登錄 “優(yōu)教同步學(xué)習(xí)網(wǎng)”, 預(yù)習(xí) Lesson 8。 Presentation This is a book. book Just learn Presentation This is a bag. bag Just learn Practice Practice Show me your bag. Show me your book. Practice Let’s sing and play Summary book bag 本課學(xué)到的學(xué)習(xí)用品類單詞有 :