问题
单项选择题
An increase in the expected rate of inflation is most likely to cause aggregate demand and short-run aggregate supply to:Aggregate demandShort-run aggregate supply（）①A. IncreaseIncrease ②B. IncreaseDecrease ③C. DecreaseIncrease
A. ①
B. ②
C. ③
答案
参考答案：B
解析：
Increasing inflation expectations lead to higher money wage rates, which causes a decrease in short-run aggregate supply (SAS curve shifts to the left). Higher expected inflation will also encourage consumers to make purchases sooner than they otherwise would have, which increases aggregate demand (shifts the AD curve to the right).