What effect does excessive positive ionization have on some people? [br] A high

游客2023-08-03 23

问题 What effect does excessive positive ionization have on some people? [br] A high negative ion count is likely to be found ______.

选项 A、near a pond with a water pump
B、close to a slow-flowing river
C、high in some barren mountains
D、by a rotation water sprinkler

答案 D

解析推理判断题。第三段第二句谈到负离子多的地方是离水近的地方，比如海边，瀑布和喷泉边，有水花喷溅或有喷雾形成的地方，可以推断水度越快越易产生负离子，所以选D，排除其他答案。

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