新东方在线独家：AP Microeconomics预测大题必考知识点

　　本文为新东方在线AP名师郭轶臣老师写的AP Macroeconomics预测大题必考知识点，供大家备考2015年AP考试时使用。

新东方在线热报AP课程~

　　1. Steverail, the only provider of train service operating between two cities, is currently incurring economic losses.

　　(a) Using a correctly labeled graph, show each of the following.

　　(i) Steverail’s loss-minimizing price and quantity, labeled Pm and Qm, respectively

　　(ii) The area of economic losses, shaded completely

　　(iii) The allocatively efficient quantity, labeled Qe

　　(b) If Steverail raised the price above Pm identified in part (a)(i), would total revenue increase, decrease, or not change? Explain.

　　(c) Assume a per-unit subsidy is provided to Steverail.

　　(i) Will Steverail’s quantity increase, decrease, or not change? Explain.

　　(ii) Will consumer surplus increase, decrease, or not change?

　　(d) Assume instead that a lump-sum subsidy is provided to Steverail. For the short run, answer the following.

　　(i) Will the deadweight loss increase, decrease, or not change? Explain.

　　(ii) Will Steverail’s economic losses increase, decrease, or not change?

　　2.Callahan’s Orchard grows apples and operates in a constant-cost, perfectly competitive apple industry.

　　Callahan’s Orchard is currently in long-run equilibrium.

　　(a) Draw correctly labeled side-by-side graphs for the apple market and Callahan’s Orchard, and show

　　each of the following.

　　(i) Market output and price, labeled as “QM” and “PM”, respectively

　　(ii) Callahan’s output and price, labeled as “QF” and “PF”, respectively

　　(b) Now assume that the government provides farm support to apple growers by granting an annual

　　lump-sum subsidy to all apple growers. Indicate the effect the subsidy would have on each of the

　　following in the short run.

　　(i) Callahan’s quantity of output. Explain.

　　(ii) Callahan’s profit

　　(iii) The number of firms in the industry

　　(c) Indicate how each of the following will change in the long run as a result of the lump-sum subsidy.

　　(i) The number of firms in the industry. Explain.

　　(ii) Price

　　(iii) Industry output

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　　作者介绍：‍‍郭轶臣‍‍

　　澳大利亚麦考瑞大学(Macquarie)金融硕士

　　美国大学理事会AP微观经济学、AP宏观经济学、AP微积分、AP统计学授权认证教师

　　北京昌平新东方外国语学校优秀教师

　　多年AP经济学授课经验,所教授学生优秀率稳定在在80%以上

　　教学特色：

　　10余年股市投资经验，曾经在2006-2007年中国股市最大牛市行情中改变命运，授课知识点与金融市场紧密结合

　　生活经历丰富，善于用自身经历激励同学

　　本科学理，研究生学商，知识面极为丰富,对国内外教育有深刻的认识