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Can kangaroos walk backward?
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How many brains do leeches have?
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Place: The Colosseum, Italy
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Place: Bagan, Myanmar
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成语：东窗事发 (dōng chuāng shì fā)
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成语：得过且过 (dé guò qiě guò)
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Idiom: Once in a blue moon
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Idiom: The ball is in your court
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Science: What is the function of the lungs in the respiratory system?
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Science: What is the function of the nose in the respiratory system?
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Science: How does the plant transport system work?
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Maths: Pythagoras’ Theorem
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