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John Smith fights with the Indian warrior to win his love.()

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The lonely boy's name is Mike.()

The ticket to know-it-all boy is punched "lean".()

Christmas Eve refers to the night of December 24th.()

蛋白质变性本质是

A. 蛋白质一级结构变化
B. 肽键断裂
C. 疏水键断裂
D. 二硫键断裂
E. 分子空间结构发生变化

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