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What effect does excessive positive ionization have on some people? [br] People
What effect does excessive positive ionization have on some people? [br] People
游客
2023-08-03
65
管理
问题
What effect does excessive positive ionization have on some people? [br] 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 wealthy people behave
答案
A
解析
事实细节题。根据文章倒数第二句,人们可以通过观察负离子富含或缺乏对自己的影响作决定,即观察自己的反应,所以选A。第三题中提到人们观察动物是为了预报灾难,不用来决定负离子数量是否合适,排除C;B、D文中未提及。选D的同学可能误解了a negative rich or poor environment这个表达中 rich和poor的含义,他们的意思是“富含或缺乏(负离子)”。
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