2. 外语
  3. The word "demographic" (Line 4, Para. 1 ) means ______. Which of the following demographic growth patterns is most suitable for

The word "demographic" (Line 4, Para. 1 ) means ______. Which of the following demographic growth patterns is most suitable for

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问题 The word "demographic" (Line 4, Para. 1 ) means ______.
Which of the following demographic growth patterns is most suitable for the long thin powder fuse analogy?
选项 A、A virtually stable or slightly decreasing period and then a sudden explosion of population.
B、A slow growth for a long time and then a period of rapid, dramatic increase.
C、Too many people on earth and a few rapid increase in the number added each year.
D、A long period when death rates exceed birthrates and then a short period with higher fertility and lower mortality.
答案B
解析 推断题。由文章第二段第二句和第三句的virtually stable or growing very slightly for most of human history可知，文章第一段最后一句的引申意思是：在人口缓慢稳定的增长之后会出现人口的激增。四个选项之中，只有B与其最相符，故选B。
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