课程名称︰经济学原理 课程性质︰必修（兼通识） 课程教师︰张清溪 开课学院：社科院、管院 开课系所︰经济系、国企系、财金系 考试日期（年月日）︰2009/12/28 考试时限（分钟）：50分钟 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 一、选择题60％（共12题，每题5分） 1)Oligopoly's major distinguishing characteristics is that firms A)produce different products B)can influence the price of their product C)enter the industry easily D)are interdependent 2)Monopolistically copetitive firms have some market power A)by virtue of size alone B)by producing differentiated products C)because of barriers to entry into the industry D)because of barriers to exit from the industry 3)When a new firm begins production in the Cournot model, it is assumes its demand curve is A)the market demand less the amount the other firm is selling B)the market demand plus rhe amount the other firm is selling C)the same as the competing firm's demand curve D)one-half of the competing firm's demand curve 4)You cause an automobile liability insurance company to face a moral hazard problem when you take ___ ypu buy automobile liability insurance from the company. A)less driving precautions after B)more driving precautions after C)less driving precautions before D)the same driving precautions before and after 5)Product differentiation that makes the product better for some consumers and worse for other is A)always welfare decreasing B)vertical differentiation C)horizontal differentiation D) never undertaken by firms 6)Monopolistically competitive firms in long-run equilibrium profuce at ___ the optimalscale. A)more than B)exactly C)less than D)sometimes more and sometimes less than 7)What is the maximum value the HHI can take on? A)1000 B)5000 C)10000 D)100000 Refer to the information provided in Figure 15.1 below to answer the questions that follow. Below are drawn cost curves for Dom's Barber Shop, a monopolistically competitive firm.(图略) 8)Refer to Figure 15.1. In this industry in the long run A)firms will continue to earn economic profits B)firms will enter until all firms earn a normal profit C)product demand will decrease so that profits are decreased D) the government will impose prrice controls to eliminate profits 9)Agroup of firms explicitly colluding to make price and output decisions is called A)a concentrated industry B)an oligopoly C)a cartel D)price leadership 10)As a result of an increase in the payroll tax that employers must pay on their employees' wages, employers reduce the starting wage for new employees. This is an example of A)tax shifting B)tax incidence C)a regressive tax D)tax avoidance Refer to the information provided in Table 19.1. below to answer the questions that follow Table 19.1 Total Income Total Taxes $10000 $1000 $20000 $2400 $30000 $4500 $40000 $8000 11)Refer to Table 19.1. If income increase from $30000 to $40000, the marginal tax rate is A)5% B)20% C)35% D)indeterminate from this information 12)Refer to Table 19.1. The tax rate structure in this example is A)proportional B)progressive C)regressive D)marginal 二、问答题40％ 1.假设某一产业中的厂商是跟跌不跟涨，请你回答以下问题 （1）假设A厂商为该产业中的一员，请你画出A厂商面对的需求曲线，并且说明为什麽。 （需以图及文字说明） （2）承上题，请你说明A厂商具有价格僵固的特性。 2.请你找出以下赛局的纳许（Nash equlibrium）均衡点。 （1） B 认罪 不认罪 A 认罪 2，2 -1，4 不认罪 4，-1 0，0 （2） 女 电影 球赛 男 电影 1，2 0，0 球赛 0，0 2，1 3.假设政府对某商品课徵从量税，请利用图形分析以下问题。 （1）若从量税课在生产者上，生产者与消费者各负担的税赋为何？ （2）承上题，若需求弹性越大，则生产者对於从量税的转嫁能力越大还越小？ （3）证明不论把从量税课在消费者或是生产者身上，都会产生一样的绝对损失。 (deadweight loss) -- 奶奶跟孙子在庙里拜拜，奶奶一掷，「阿妈，醒杯ㄟ（圣筊呢）」 阿妈眉头一皱，察觉到事情并不单纯... 　　　　　　　　　　　　　　　　　　 －－－《圣筊战争》－－－ --

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