课程名称︰经济学一 课程性质︰A5通识* 课程教师︰李晓云 开课学院：社会科学院 开课系所︰经济系 考试日期（年月日）︰2011/01/09 考试时限（分钟）：120分钟(9:30-11:30) 写完即可交卷 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)，请同学於作答前务必检查。 ※ 请於答案卷上作答，无须抄题。 ※ 满分100分。 一、(12%) Given below are the price and income elasticities of demand for coffee in two areas, rural and urban. ┌───────────────┬─────┬─────┐ │ │ Rural │ Urban │ ├───────────────┼─────┼─────┤ │Price Elasticities │ -1.5 │ -1.2 │ ├───────────────┼─────┼─────┤ │Income Elasticities │ 0.75 │ 1.5 │ ├───────────────┼─────┼─────┤ │Cross Elasticities with milk │ -0.5 │ -0.2 │ └───────────────┴─────┴─────┘ (1) Calculate the % change in demand for coffee if the price of coffee decreases by 5% in the rural areas and 10% in the urban areas. (4%) (2) Calculate the % change in demand for coffee, if the income of rural households decreases by 10% and of urban households increases by 5%. (4%) (3) Calculate the % change in price for milk in the rural areas if an increase in coffee demand is 10%. What is the relationship between coffee and milk? (4%) 二、(8%) 在台湾大麻为禁止交易的毒品，在加拿大则是合法交易，但课以重税。请 以市场供需图形分析此二种政策对於各国大麻市场价格与产量之影响，并试述其 优缺点。 三、(10%) There are four consumer willing to pay the following amounts for haircuts: Jelly: $700 Oprah: $200 Sally Jessy: $800 Montel: $500 There are four haircutting businesses with the following costs: Firm A: $300 Firm B: $600 Firm C: $400 Firm D: $200 Each firm has the capacity to produce only one haircut. (1) For efficiency, how many haircuts should be given? Please draw the figure and explain it. (6%) (2) How large is the maximum possible total surplus (Note that total surplus is the sum of consumer surplus and producer surplus). (4%) 四、(16%) Suppose the supply and demanded schedule of shoes is as follows: ┌─────────┬─────────┬─────────┐ │Price Per Pair │Quantity Demanded │Quantity Supplied │ ├─────────┼─────────┼─────────┤ │ $200 │ 12 │ 3 │ ├─────────┼─────────┼─────────┤ │ $400 │ 10 │ 5 │ ├─────────┼─────────┼─────────┤ │ $600 │ 7 │ 7 │ ├─────────┼─────────┼─────────┤ │ $800 │ 5 │ 10 │ ├─────────┼─────────┼─────────┤ │ $1000 │ 3 │ 12 │ └─────────┴─────────┴─────────┘ (1) If a price ceiling of $500 is imposed by the government, then what will happen in shoes market? Surplus or shortage of shoes? How much? Please draw the figure and point out the total surplus. (8%) (2) If a price floor of $900 is imposed by the government, then will there be a surplus or shortage of shoes? How much? Please draw the figure and point out the total surplus. (8%) 五、(12%) 假设汽油市场的供需函数为： Qs= -20 + P ; Qd= 100 - 0.5P 因物价大幅上涨，政府决定每公升汽油给予5元的从量补贴。请问 (1) 补贴前後之市场均衡价格与数量。 (6%) (2) 每公升汽油消费者和厂商各获得多少补贴？ (6%) 六、(12%) Suppose the government levies a tax of the vertical distance from point A to point B. Using the graph shown, determine the value of each of the following: 图在这：http://ppt.cc/xCb- (1) equilibrium price and total surplus before the tax (6%) (2) total surplus (consumer surplus + producer surplus + tax revenue) and deadweight loss after the tax (6%) 七、(22%) 台湾为一开放的经济体系，设冷气机消费市场为完全竞争市场，国外生产者以 每台 25,000 元的价格无限供应给国内消费者，台湾冷气机市场的供给函数为 Qs= -10 + 0.001P，需求函数为 Qd= 55 - 0.001P。试求： (1) 台湾冷气机市场的均衡价格与数量、进口量、社会总福利。 (8%) (2) 若政府对进口冷气机课徵 5,000 元的从量税（即关税），请计算课税後台湾冷 气机市场的均衡价格与数量、进口量、社会总福利。 (8%) (3) 若政府在课徵关税的同时又规定进口配额2台，求此措施後的市场均衡价格与数 量。 (6%) 八、(8%) 某商品市场供需如下： Qd= 70 - 5P ; Qs= -10 + 5P (1) 假设每单位的产量会释放出2单位的污染，且每单位的污染会对社会产生1元的 成本，请计算考虑污染後的社会总剩余。 (4%) (2) 假设政府现在对每单位的产量课2元的税，请计算新的社会总剩余。(4%) --

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