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What effect does excessive positive ionization have on some people? People should be able to come to a decision about ions in t
What effect does excessive positive ionization have on some people? People should be able to come to a decision about ions in t
admin
2009-06-24
56
问题
What effect does excessive positive ionization have on some people?
People should be able to come to a decision about ions in the air if they ______.
选项
A、note their own reactions.
B、move to a healthier area.
C、observe domestic animals.
D、watch how healthy people behave.
答案
A
解析
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公共英语五级笔试题库公共英语(PETS)分类
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公共英语五级笔试
公共英语(PETS)
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