A、double B、become four times stronger C、be the same D、get four times weaker B从文章后面的部分“If you double the distance…If you take it

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问题

选项 A、double
B、become four times stronger
C、be the same
D、get four times weaker

答案B

解析 从文章后面的部分“If you double the distance…If you take it four times as far away,it gets sixteen times weaker(four times four)and so on.”可以看出,距离越远,重量越轻,两者之间是倍数关系的反比例。通过计算,距离减少2倍,重量则会重4倍。故正确的答案为B。
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