What effect does excessive positive ionization have on some people? People should be able to come to a decision about ions in t

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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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本试题收录于：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（PETS）

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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

公共英语五级笔试

公共英语（PETS）

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EatingMeat—LessorMore?EverysecondintheUnitedStatesalone,morethan250animalsareslaughteredforfood,addingup

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