inflationary gap 和recessionary gap 在讲义哪里讲过啊？

问题如下：

Which of the following is least likely to be caused by a shift in aggregate demand?

选项：

A.

Stagflation.

B.

A recessionary gap.

C.

An inflationary gap.

解释：

A is correct.

Stagflation occurs when output is declining and prices are rising. This is most likely due to a decline in aggregate supply—a leftward shift of the SRAS curve. Depending on the source of the shift, the LRAS may shift too.

考点： stagflation.

stagflation是由于总供给短缺造成的，和总需求没有关系，所以A入选。

inflationary gap 是由于总需求过剩造成的，所以C不入选。

recessionary gap. 是由于总需求短缺造成的，所以B不入选。