填空题

Based on many studies, we can come to the conclusion that exposure to magnetic fields will contribute to the growing incidences of certain site-specific cancer.

【参考答案】

Y

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填空题

The harm the electromagnetic radiation does to people’s health is as great as or even greater than that cigarette smoking does.

填空题

If the power frequency is weaker than the frequency generated by the Earth, it will not have any influence on us.