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  3. Which one of the following is not mentioned in paragraph 1 as the motivation for people to try to live a longer life? Which one

Which one of the following is not mentioned in paragraph 1 as the motivation for people to try to live a longer life? Which one

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问题 Which one of the following is not mentioned in paragraph 1 as the motivation for people to try to live a longer life?
Which one of the following is mentioned as one reason why the old-aged population dramatically increases in the 20th century?
选项 A、We have a larger total population.
B、More accident victims can survive due to improved medical care.
C、More children were born so that the old can be better taken care of,
D、Less newly-born children and the mother bearing them die.
答案D
解析 考察细节。问题中的20th century对应于原文的1900和2000两个时间点，所以我们从第二段中寻找答案；“Survival rates began to climb for infants，children and women of childbearing age，gradually lifting humanity’s average life span．”这句话成为这道题目考查的对象；误选A的考生借助了自己的常识，这不是正确的做法，我们前面讨论过，而且这一事实对于平均年龄的提高也没有促进作用；B项曲解了原文的survive的意思；C项在原文对于women of childbearing age这一群体进行了自行的发挥；只有D项的阐述是正确的，D项正确的指出了新生婴儿和刚生产的产妇的存活率的提高，对于平均寿命的提高是有推动作用的，举个简单的例子，在一个月大就夭折的孩子，和在生产时丧生的产妇，如果这样的人群数量很大的时候会对人口的总的平均寿命产生很大的影响的。
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