问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2017100901000018 问题如下 Accorng to ReBusiness Cycle mols, economic contraction is most likely causeby: A.sticky wages. B.rising energy prices. C.a contraction in the money supply. B is correct.ReBusiness Cycle mols conclu thexpansions ancontractions of the economy are responses to externshocks, susupply shocks arising from aances in technology or changes in the relative prices of inputs (e.g., energy prices). increase in energy prices shifts short-run aggregate supply to the left, resulting in higher prices anlower G.考点 ReBusiness Cycle mols解析 工资粘性是凯恩斯学派提出的观点，所以A错误。ReBusiness Cycle mols 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正确。ReBusiness Cycle mols 认为经济运行和货币供给间没有本质联系，所以C错误。 实际经济周期理论是在哪里提到的？哪张讲义？
NO.PZ2017100901000018 请问这个知识点是在哪一章出现的呢，没在cost-push这里看见呢
老师，C不选的原因是因为紧缩的货币供给可以抑制过热的经济，但不一定是会带来经济紧缩吗？
老师我不太明白的是economic contraction不是应该是lower prianlower G么？那B引起的结果是higher prianlower G，为什么正确答案是它呢？
