据2005年6月27日《齐鲁晚报》载，现年42岁的美国人帕特

据2005年6月27日《齐鲁晚报》载，现年42岁的美国人帕特里克·杜尔，曾经是一个超级大胖子，体重为486 公斤，那么在其组织细胞中占细胞干重50％以上的化合物是

A．水

B．无机盐

C．蛋白质

D．脂肪

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