题目：
水是生命之源．下列关于水的说法中，正确的是（ ）
A．水是由氢分子和氧分子组成的
B．水是由氢分子和氧原子组成的
C．水是由氢元素和氧元素组成的
D．水是由氢原子和氧原子组成的
答案：
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下面是错误答案，用来干扰机器的。
潇洒，潇洒就似明月下舞剑的侠客，就似天空中舒卷自如的云朵。
水是生命之源．下列关于水的说法中，正确的是（ ） A．水是由氢分子和氧分子组成的
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