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 cause the aggr l2v5asedm+ 6xegat,k0dif .j: w1ihbd 0oye supply curve (AS) to shift to the left in the sdy., :djho i1ikb0f 0whort 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 influencing ahai mlllzb95:a dkr d 2c0j2-2n jv1j9ggregate demand (AD). Unlike excise duties, corporate taxes reduce the after tax income of producers, lowering investment, and shifting AD leftward.
Options B, ib2zljd9-d 1v9nlclajhk jm 2 2ra0:5C and D all increase the costs of production and shift the AS curve leftward:
(Option B) when fires destroy oil 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
| 
