2. 外语
  3. When Laurie Aronson was over 35, she did not feel worried because she was unwilling to get married. Nowadays, demographic forec

When Laurie Aronson was over 35, she did not feel worried because she was unwilling to get married. Nowadays, demographic forec

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问题 When Laurie Aronson was over 35, she did not feel worried because she was unwilling to get married.
Nowadays, demographic forecasting is becoming extremely difficult partly because of ______.
选项
答案some unexpected shifts
解析 定位到末段首句Such unexpected shifts are part of what makes demographic forecasting extremely difficult... the midst of a hurricane．[精析] 同义转述题[考频：22]。此处要填入名词性成分作because of的宾语。从原文可知，就是这样未曾预料到的转变使得现在的人口统计预测变得非常困难。题干将原文的句型进行了改写，但不难得出答案为some unexpected shifts。
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大学英语四级

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