What do you learn from this book?(一般现在时)或者
What have you learnt from this book?（现在完成时）
你从这本书中学到了什么
What do you learn from this book?
what do you learn from this book
What do/did you learn from this book?
what have you learnt from the book?
What did you learn from this book？
What did you learn from this book?
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