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１肌肉主要由什么物质组成？Ａ水Ｂ蛋白质Ｃ氨基酸答案：Ａ。肌肉是由７０％的水和２２％的蛋白质组成的。２摄入额外的蛋白质（尤其是以氨基酸的形式），将会促进肌肉的生长。Ａ正确Ｂ错误答案：Ｂ。只有锻炼才能促进肌肉的生长。最近的研究表明，运动员可能需要补充...
1 muscle mainly composed of what material? A water B protein C amino acid Answer: A. Muscle is made up of 70% water and 22% protein. 2 intake of additional protein (especially in the form of amino acids), will promote muscle growth. A correct B wrong answer: B. Only exercise can promote muscle growth. Recent research shows that athletes may need to supplement ...