2. 外语
  3. It is postulated that population trends have an effect on economic fluctuations.

It is postulated that population trends have an effect on economic fluctuations.

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问题 It is postulated that population trends have an effect on economic fluctuations.
选项 A、deducted
B、assumed
C、decreed
D、challenged
答案B
解析 postulated意为“假设”。B选项：assumed意为“假设，臆断”，与画线的单词意义相符，如：We can’t assume anything in this case．(在这种情况下我们不可能做出假设。)根据句意：据推测，人口的发展趋势对经济的波动有影响。故选B。其他三项：deducted扣除；decreed裁决，颁布……为法令；challenged挑战，质疑。
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