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食物的营养成分包括水、无机盐、维生素、糖类、蛋白质和脂肪，其中能为人体生命活动提供能量的有_________、________ _和_______ _。
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【单选题】You won’t be able to see him because he ______ a meeting in Suzhou when you arrive.A．will have h
A.
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B.
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