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What effect does excessive positive ionization have on some people? A high negative ion count is likely to be found ______.
What effect does excessive positive ionization have on some people? A high negative ion count is likely to be found ______.
admin
2009-04-23
42
问题
What effect does excessive positive ionization have on some people?
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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0
大学英语四级
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