本题目来源于试卷: IB Economics Unit 3.1: Macroeconomics - Economic Output, AD & AS，类别为 IB经济学
[单选题]
Which of the following will not causeq :s;e7jpd fi2i:go8p the aggr v+8w,0;jf0yfnugyk qegate supply curve (AS) to shift to the left in the short f8vf 0nky +g;yuq0w,j run?
A. An increase in corporate tax
B. A fire destroying oil production capacity
C. An increase in excise duties by the government
D. A shortage of raw materials
参考答案: A
本题详细解析:
Increase in corporate tax is a factor inf ,(rzj6ntoj8,gsx r1 nu-d*;zz ttw0tluencing aggregate demand (AD). Unlike excise duties, corporate taxes reduce the after tax income of producers, lowering investment, and shifting AD leftward.
Options B, C and D all increase the costs of production and shift the AS curve leftward:
(Option B) when fires destroy oxt grz-n0,tjz 1u6wd;r*tsz o8jtn ,(il producing capacity the price of oil increases
(Option C) increased excise duties—an indirect tax—increase the cost of production for producers
(Option D) the cost of raw materials increases when a shortage exists
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