It took ______ for the world to increase its population from 1 billion to 4 billion. -题库考试答案搜索网

It took ______ for the world to increase its population from 1 billion to 4 billion.

单选题

2022-03-02 18:26

A、A) 100 years
B、B) 145 years
C、C) 1975 years
D、D) Over two million years

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正确答案

B

试题解析

B[试题分析] 事实推断题。[详细解答] 在第二段中，作者介绍，世界人口于1830年达到十亿，而到1975年达到40亿。因此，世界人口从十亿增加到40亿花了145年，B应为正确答案。

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