课程名称︰经济学二
课程性质︰选修兼A5通识
课程教师︰李晓云
开课学院：社科院
开课系所︰经济系
考试日期（年月日）︰103.1.10
考试时限（分钟）：120 min.
是否需发放奖励金：是
（如未明确表示，则不予发放）
试题 :
※本份试题共八题(二面)，请同学于作答前务必检查。
※请于答案卷上作答，无须抄题。
※满分100分。
一、(13%)假设你在考虑中华电信的二种3G行动互联网月租型方案，方案一，每月支付
450元，享1.5GB(1GB大约等于1000MB)免费传输量，超过1.5GB者每MB收费1.64元；
方案二，每月固定支付850元，国内无限浏览互联网。你每月使用3G行动上网之需
求为QD=3500-1000P，其中P为每MB价格，Q为每月上网使用传输量(MB)。
(1)在这二种方案下，你每月各会上网使用多少传输量(MB)？(4%)
(2)在这两种方案下，你的消费者剩余各为多少？请绘图说明并计算出数值。(6%)
(3)你会选择哪一种方案，为什么？(3%)
二、(11%)Suppose that the typical medical procedure has a cost of $570, yet a
health insurance pays only $150 out of pocket. Her insurance company pays
the remaining $420. If the market demand equations: QD=1000-P.
(1) Solve for the equilibrium price and the equilibrium quantity if each
procedure has a price of $570.(4%)
(2) If the government imposes a price ceiling of $450 and subsidizes $120
in this , then how much producer surplus will be in the market?(3%)
(3) Show the quantity of procedures demanded if consumers pay only $150
per procedure. If the cost of each procedure to society is truly $570,
and if individuals have health insurance as just described, will the
number of procedures performed maximize total surplus. How much total
surplus will be in the market?(4%)
三、(14%)为避免油价调涨致使公共运输全面涨价，政府自100年5月起，提供营业车辆油
价补贴，包括公路与市区客运、出租车、载客小船、船舶运送业等，补助金额随油
价浮动采价差补贴，价差补贴以每公升5元为上限，每月补贴400公升。假设政府以
税收来支应补贴，而每辆车平均下来，政府油价补贴每公升为3元，在无每月补贴400
公升上限问题，且公共运输之石油供需函数分别为QS=-150+3P，QD=300-2P下，其中P
为每公升石油价格，Q为每月石油交易量，
(1)请计算对公共运输石油市场之消费者剩余、生产者剩余、及总剩余的影响？(9%)
(2)请绘图说明补贴是否会造成无谓损失。(5%)
四、(17%)Having rejected a tariff on textiles, the president of Isoland is now
considering the same-sized tax on textile consumption. Suppose that the
textile market is described by the following supply and demand equation:
QS=3P；QD=60-2P, and the world price of textiles is 10.
(1) Solve for the import quantity and the quantity produced by the producer
of Isoland before textile consumption tax.(4%)
(2) Compute the quantity consumed and thequantity produced in Isoland under
a textile consumption tax.(4%)
(3) Solve for tax revenue and deadweight loss of textile consumption tax.
(4%)
(4) Which raises more revenue for the government - the consumption tax or
the tariff? Which has a smaller deadweight loss?(5%)
五、(17%)假设某一小国国内蒜头供需情形如下：QS=3P-22，QD=42-P，请问
(1)如果该小国可以用每单位12元的价格由世界市场进口任何数量的蒜头，该小国的
蒜头生产及消费各为多少？(4%)
(2)如果该国政府认为，每单位12元的进口价格太低，将对本国产业不利，于是课征
20%的从价关税，这时国内价格为多少？生产及消费各为多少？进口量又为多少？
关税收入为多少？(10%)
(3)如果政府不用关税方式，而以配额方式限制进口数量，配额应设定单位？(3%)
六、(12%)There are three industrial firms in Happy Valley. The government wants
to reduce pollution to 120 units, so it gives each firm 30 tradable
pollution permits.
┌──┬────────────┬──────────────────┐
│Firm│Initial Pollution Level │Cost of Reducing Pollution by 1 Unit│
├──┼────────────┼──────────────────┤
│ A │ 70 units │ $20 │
├──┼────────────┼──────────────────┤
│ B │ 80 units │ 25 │
├──┼────────────┼──────────────────┤
│ C │ 60 units │ 15 │
├──┼────────────┼──────────────────┤
│ D │ 50 units │ 10 │
└──┴────────────┴──────────────────┘
(1) Who sells permits and how many do they sell? Who buys permits and how
many do they buy? What is the total cost of pollution reduction to
this situation?(9%)
(2) How much higher would the costs of pollution reduction be if they
permits could not traded?(3%)
七、(6%)中国国防部2013年11月公告钓鱼台列屿划入“东海防空识别区”范围。过去钓
鱼台列屿是划入日本防空识别区内，中国此次自行将钓鱼台列屿划设到东海防空识
别区内，势将拉高日本与中国之间的冲突与对立。请以公有资源所学说明应如何解
决钓鱼台列屿的主权问题？
八、(10%)Please answer the following quetions:
(1) Explain why the marginal-cost curve crosses the average-total-cost
curve at its minimum?(5%)
(2) If the city government implements a lump-sum tax of NT$5,000,000 on
each producer of cars. Which of the following curves- average fixed
cost, average variable cost, average total cost, and marginal cost-
would shift as a result of the lump-sum tax? Why? Show this in a graph.
(5%)