No.PZ2017100901000018 (选择题)提问

问题如下：

According to Real Business Cycle models, an economic contraction is most likely caused by:

选项：

A.

sticky wages.

B.

rising energy prices.

C.

a contraction in the money supply.

解释：

B is correct.

Real Business Cycle models conclude that expansions and contractions of the economy are responses to external shocks, such as supply shocks arising from advances in technology or changes in the relative prices of inputs (e.g., energy prices). An increase in energy prices shifts short-run aggregate supply to the left, resulting in higher prices and lower GDP.

考点： Real Business Cycle models

解析： 工资粘性是凯恩斯学派提出的观点，所以A选项错误。

Real Business Cycle models 认为经济周期的产生与外部冲击息息相关。能源价格的上涨会带来经济的衰退，所以B选项正确。

Real Business Cycle models 认为经济运行和货币供给间没有本质联系，所以C选项错误。