2. 外语
  3. A population explosion will lead to______. It took______ years for world population to grow from 1 billion to 3 billion.

A population explosion will lead to______. It took______ years for world population to grow from 1 billion to 3 billion.

admin2007-10-13  16
问题 A population explosion will lead to______.
It took______ years for world population to grow from 1 billion to 3 billion.
选项 A、100
B、115
C、130
D、145
答案C
解析 答案依据第五段第一句和第二句：In 1830，world population…just 30 more to add a third million．"世界人口在1830年达到了10亿。过了100年，人口又增加了l0亿，又仅仅过了30年，世界人口就达到了30亿"。世界人口从10亿增长到30亿用了130年。
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成人本科学位英语

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