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Wheel · 2023年05月04日

C为什么不对呢

  1. CFA I
  2. Economics Analysis

NO.PZ2016010801000126

问题如下：

Which of the following statements about devaluation of a country's currency is correct?

选项：

A.

devaluation of currency narrows trade deficit when imports are less than exports.

B.

devaluation of currency narrows trade deficit if the price elasticity of import demand is larger than one.

C.

devaluation of currency narrows trade deficit when investment increases in comparison to private and government savings.

解释：

B is correct.

The elasticities approach suggests that the export and import with more elasticity is most likely to narrow the trade deficit in terms of currency devaluation.

考点：elasticities approach

解析：弹性理论认为，具有更大弹性的进出口贸易最有可能在货币贬值的情况下缩小贸易逆差。B选项正确，AC都是打酱油的选项。

X-M=S-I-（G-T）

我理解是因为贸易逆差才导致I>S.而不是因为I>S才导致贸易逆差

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1 个答案

笛子_品职助教 · 2023年05月05日

嗨，从没放弃的小努力你好：


我理解是因为贸易逆差才导致I>S.而不是因为I>S才导致贸易逆差

在CFA的这个考点，这里并不考因果关系，就是纯粹对着数学公式来推。

X-M=S-I-（G-T）看出，右边其他不变，I变大，X-M变小。


C选项说，与私人和政府储蓄相比，当投资增加时，货币贬值会缩小贸易赤字。

我们带入公式，I增加，X-M变小，贸易赤字是扩大。

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