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Why can't people on earth be harmed by radiati

2022-08-01 23:16:58 问答库 阅读 168 次

问题详情

Why can"t people on earth be harmed by radiation?
A.Because men on the Earth are protected by the atmosphere.
B.Because radiation only has short-term effects on men on the Earth.
C.Because there is a great distance between the Earth and the radiation areas.
D.Because the Van Allen Belts absorb all radiation.

参考答案

正确答案:A
解析:“Neither of these forms of radiation area is dangerous to us on the earth,since we are protected by our atmosphere.”,所以生活在地球上的人类之所以不受射线的危害正:是大气层的保护。

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