(c) 請用加入預期之菲力普曲線說明：當政府持續將實際失業率降低至自然失業率以下，則物價水準必加速上漲的現象。 (5 分)

三、簡答題(共 50 分，中、英文作答皆可) 1. Suppose that Taipei consumers pay twice as much for avocados as for tangerines, whereas Kaohsiung consumers pay half as much for avocados as for tangerines. Assuming that consumers maximize their utility, which city's consumers have a higher marginal rate of substitution of avocados for tangerines? Explain your answer. (4 pts)