老師你好，我想問一下是不是本國的monetary不值錢了，X就會increase M就是decrease？

问题如下：

Which one of the following conditions will most likely lead to a decrease in aggregate demand?

选项：

A.

Capacity utilization is increasing

B.

Domestic currency becomes stronger

C.

Taxation rate is reduced

解释：

B is correct.

Imports will become cheaper for domestic buyers when domestic currency becomes stronger, and exports will become expensive for domestic sellers. Therefore net exports will decrease, aggregate demand will shift leftwards, which means a decrease in demand at each price level.

考点：总需求

解析：A选项会引起投资的增加从而引起总需求的增加，所以不入选。

本币的升值会导致进口的增加以及出口的减少，这又会带来净出口的减少，从而导致总需求的减少，所以B选项入选。

税收的减少，会同时增加投资以及消费，从而导致总需求增加，所以C选项不入选。