What effect does excessive positive ionization have on some people? According to the passage, static electricity can be caused

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问题 What effect does excessive positive ionization have on some people?
According to the passage, static electricity can be caused by ______.

选项 A、using home-made electric goods.
B、wearing clothes made of natural materials.
C、walking on artificial floor coverings.
D、copying TV programmes on a computer.

答案C

解析

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公共英语（PETS）

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What effect does excessive positive ionization have on some people? According to the passage, static electricity can be caused

公共英语五级笔试

公共英语（PETS）

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