题干

洋葱中含有正丙硫醇(C3H7SH),具有强烈的刺激性气味。下列有关叙述错误的是(    )

A:切洋葱时,人会流眼泪,是因为正丙硫醇分子在不断运动

B:正丙硫醇是一种有机化合物

C:正丙硫醇中碳元素与氢元素的原子个数比为3:7

D:正丙硫醇中碳元素与硫元素的质量比为9:8

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答案(点此获取答案解析)

C

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