📚 Typical Exam Questions Explained | GCSE OCR Economics | 典型例题详解
Welcome to this focused revision guide for GCSE OCR Economics. In this article, we break down a series of typical exam-style questions covering both microeconomic and macroeconomic topics. For each question, you will find a clear model answer alongside detailed explanations that highlight key command words, common pitfalls, and the precise knowledge examiners expect. This resource is designed to build your confidence and help you achieve top marks by understanding not just what the correct answer is, but why it is correct.
欢迎来到这本 GCSE OCR 经济学专项复习指南。在本文中，我们将拆解一系列典型的考试风格题目，涵盖微观经济学和宏观经济学的主题。每道题都配有清晰的模型答案和详细解释，突出关键词汇、常见误区以及考官期望的精确知识。本资源旨在帮助你建立信心，通过理解答案为什么正确而不仅仅是什么正确，从而获得高分。
1. Shifts in Demand and Supply | 需求与供给的移动
Question: The government introduces a new subsidy for producers of electric cars. Using a demand and supply diagram, explain the likely effect on the equilibrium price and quantity of electric cars. [4 marks]
问题： 政府为电动汽车生产商引入了一项新的补贴。使用需求与供给图，解释这对电动汽车均衡价格和数量可能产生的影响。[4分]
A subsidy reduces the cost of production for electric car manufacturers. On a demand and supply diagram, this is shown by a rightward shift of the supply curve (S1 to S2). As supply increases, a new equilibrium is established at a lower price (P1 to P2) and a higher quantity (Q1 to Q2). The crucial point is that the subsidy does not directly affect the demand curve; the change in quantity demanded is a movement along the demand curve caused by the lower price. For full marks, you must clearly label the axes (price and quantity), both curves, the initial equilibrium, and the new equilibrium, and explain the mechanism in words.
补贴降低了电动汽车制造商的生产成本。在需求与供给图中，这表现为供给曲线向右移动（S1 到 S2）。随着供给增加，新的均衡在更低的价格（P1 到 P2）和更高的数量（Q1 到 Q2）下形成。关键点在于补贴并不直接影响需求曲线；需求量的变化是由较低价格引起的沿着需求曲线的移动。要拿到满分，你必须清晰标注坐标轴（价格和数量）、两条曲线、初始均衡点和新的均衡点，并用文字解释这一机制。
2. Price Elasticity of Demand (PED) | 需求的价格弹性
Question: A cinema increases its ticket price from £8 to £10, and the number of tickets sold falls from 500 to 400 per week. Calculate the PED for cinema tickets and state whether demand is elastic or inelastic. Explain your answer. [4 marks]
问题： 一家电影院将票价从 8 英镑提高到 10 英镑，每周售出的票数从 500 张下降到 400 张。计算电影票的需求价格弹性（PED），并说明需求是有弹性还是缺乏弹性。解释你的答案。[4分]
First, calculate the percentage change in quantity demanded: (400 - 500) / 500 × 100% = -20%. Then the percentage change in price: (10 - 8) / 8 × 100% = +25%. PED = % change in quantity demanded / % change in price = -20% / +25% centage fall in quantity demanded is smaller than the percentage rise in price. The cinema's total revenue will increase from £4,000 to £4,000? Actually, £8×500 = £4,000; £10×400 = £ ssibly because there are few close substitutes for the cinema experience at that location.
首先，计算需求量的百分比变化：(400 - 500) / 500 × 100% = -20%。然后计算价格的百分比变化：(10 - 8) / 8 × 100% = +25%。PED = 需求量变化的百分比 / 价格变化的百分比 = -20% / +25% = -0.8。忽略负号，数值为 0.8，小于 1，因此需求缺乏弹性。这意味着需求量下降的百分比小于价格上升的百分比。影院的总收入将从 4000 英镑变为 4000 英镑（8×500=4000，10×400=4000），收入不变。但答案应重点说明缺乏弹性的性质：消费者对价格变化的反应不强烈，可能是因为在该地点看电影很少有近似替代品。
3. Price Elasticity of Supply (PES) | 供给的价格弹性
Question: Explain two factors that might make the supply of strawberries highly price elastic in the long run. [4 marks]
问题： 解释两个可能使草莓的供给在长期内高度价格弹性的因素。[4分]
In the long run, supply of strawberries can be highly price elastic. First, producers can increase the amount of land used for growing strawberries if the price rises, as farmers can switch from other crops. This flexible use of factors of production makes a large increase in quantity supplied possible without a proportionately larger cost increase. Second, the time period allows firms to build new greenhouses, invest in better technology, and train workers. These supply-side improvements make it easier to expand output when the market price increases, resulting in a PES value greater than 1. In contrast, in the short run, supply is often inelastic because these adjustments take time.
在长期中，草莓的供给可能是高度价格弹性的。首先，如果价格上涨，生产者可以增加用于种植草莓的土地面积，因为农民可以从其他作物转换。这种生产要素的灵活运用使得供给量的大幅增加成为可能，而不会引起成本更大比例的增长。其次，较长的时间周期使企业能够建造新的温室、投资更好的技术和培训工人。这些供给侧改进使得当市场价格上升时更容易扩大产出，从而导致 PES 值大于 1。相比之下，在短期内供给通常缺乏弹性，因为这些调整需要时间。
4. Negative Externalities in Production | 生产的负外部性
Question: A chemical factory discharges waste into a river, polluting the water used by a downstream fishery. Explain how this represents market failure. Use the concepts of private and social costs. [4 marks]
问题： 一家化工厂将废物排入河流，污染了下游渔场使用的水源。解释这如何代表市场失灵。使用私人成本和社会成本的概念。[4分]
The chemical factory only considers its private costs of production, such as raw materials, labour, and energy. However, the pollution imposes an external cost on the fishery, for example, reduced fish stocks and clean-up expenses. The social cost of production equals the private cost plus this external cost. In a free market, the factory will overproduce because its output decision is based solely on private costs, which are lower than social costs. This leads to a misallocation of resources: the socially optimal output is lower than the market output, causing market failure. A diagram showing the divergence between the marginal private cost (MPC) and marginal social cost (MSC) curves, and the resulting deadweight welfare loss, would support this explanation.
化工厂只考虑其生产的私人成本，如原材料、劳动力和能源。然而，污染给渔场强加了外部成本，例如鱼类资源减少和清理费用。生产的社会成本等于私人成本加上这一外部成本。在自由市场中，工厂会过度生产，因为其产出决策仅基于私人成本，而私人成本低于社会成本。这导致资源错配：社会最优产出低于市场产出，造成市场失灵。绘制边际私人成本（MPC）和边际社会成本（MSC）曲线之间的差异，以及由此产生的无谓福利损失，将支持这一解释。
5. Government Intervention – Indirect Taxes | 政府干预 – 间接税
Question: To reduce the consumption of sugary drinks, the government imposes an indirect tax of 20 pence per can. Using a demand and supply diagram, illustrate and explain the likely impact on the market price and quantity traded. Identify the tax burden on consumers and producers. [6 marks]
问题： 为了减少含糖饮料的消费，政府对每罐饮料征收 20 便士的间接税。使用需求与供给图，说明并解释这对市场价格和交易量可能产生的影响。指出消费者和生产者的税收负担。[6分]
An indirect tax shifts the supply curve vertically upwards by the amount of the tax (S1 to S2). The new equilibrium price (P2) is higher, and the equilibrium quantity falls from Q1 to Q2. The price received by producers is P3, which is the market price minus the tax. The tax burden is shared: the consumer burden is P2 - P1 per unit, and the producer burden is P1 - P3 per unit. The government earns tax revenue equal to the area bounded by P2-P3 multiplied by Q2. The more inelastic the demand, the larger the consumer burden. The reduction in quantity illustrates the desired fall in consumption, helping to correct the negative externalities associated with sugary drinks, such as healthcare costs.
间接税使供给曲线向上垂直平移，幅度等于税额（S1 到 S2）。新的均衡价格（P2）更高，均衡数量从 Q1 降至 Q2。生产者收到的价格为 P3，即市场价格减去税额。税收负担是分担的：每单位消费者负担为 P2 - P1，生产者负担为 P1 - P3。政府获得的税收收入等于 P2-P3 垂直距离乘以 Q2 的面积。需求越缺乏弹性，消费者负担越大。数量的减少表明了消费量的下降，这有助于纠正与含糖饮料相关的负外部性，例如医疗成本。
6. Fiscal Policy and Aggregate Demand | 财政政策与总需求
Question: During an economic recession, the government decides to increase spending on infrastructure and cut income tax. Explain how these fiscal policy measures could lead to economic recovery. [6 marks]
问题： 在经济衰退期间，政府决定增加基础设施支出并削减所得税。解释这些财政政策措施如何能带来经济复苏。[6分]
Both measures are expansionary fiscal policies. Increased government spending on infrastructure (e.g., building roads) directly injects demand into the circular flow of income, raising aggregate demand (AD). This creates jobs in construction and related industries, boosting household incomes and consumption. Cutting income tax increases disposable income, encouraging consumer spending as people keep more of their earnings. The initial increase in AD can have a multiplier effect: the income spent by construction workers becomes income for others, leading to further rounds of spending. The combined effect shifts the AD curve to the right, moving the economy closer to full employment output (Yf) and increasing real GDP. If the economy is well below capacity, inflationary pressure may remain low.
这两项措施都是扩张性财政政策。增加政府基础设施支出（如修路）直接向收入循环流注入需求，提高总需求（AD）。这会在建筑及相关行业创造就业，提高家庭收入和消费。削减所得税增加了可支配收入，鼓励消费者支出，因为人们可以保留更多的收入。总需求的初始增加可能产生乘数效应：建筑工人花费的收入成为他人的收入，导致后续轮次的支出。综合效果使 AD 曲线向右移动，使经济更接近充分就业产出（Yf）并提高实际 GDP。如果经济远低于产能，通胀压力可能保持在低位。
7. Monetary Policy and the Interest Rate Transmission Mechanism | 货币政策与利率传导机制
Question: The Bank of England lowers the base interest rate. Explain the transmission mechanism through which this affects the level of economic activity. [6 marks]
问题： 英格兰银行下调基准利率。解释通过何种传导机制影响经济活动水平。[6分]
A lower base rate reduces the cost of borrowing for commercial banks, which pass on lower interest rates to households and firms. For households, cheaper credit lowers the cost of mortgages and personal loans, freeing up disposable income and encouraging consumption. Lower saving rates also disincentivise saving, boosting current spending. For firms, lower borrowing costs make investment in capital equipment more attractive, as the expected return on projects more easily exceeds the cost of finance. Additionally, a lower interest rate can lead to a depreciation of the domestic currency, as hot money flows out seeking higher returns elsewhere. A weaker currency makes exports cheaper and imports more expensive, improving net exports. All these components – consumption, investment, and net exports – increase aggregate demand, leading to higher output and employment.
较低的基准利率降低了商业银行的借贷成本，它们会将较低的利率传递给家庭和企业。对家庭而言，更便宜的信贷降低了抵押贷款和个人贷款的成本，释放了可支配收入并鼓励消费。较低的储蓄利率也抑制了储蓄，促进了当前支出。对企业而言，更低的借贷成本使资本设备的投资更具吸引力，因为项目的预期回报更容易超过融资成本。此外，较低的利率可能导致本国货币贬值，因为热钱流出以寻求其他地方的更高回报。较弱的货币使出口更便宜、进口更昂贵，从而改善净出口。所有这些组成部分——消费、投资和净出口——增加了总需求，导致更高的产出和就业。
8. Unemployment – Types and Causes | 失业 – 类型与原因
Question: Distinguish between cyclical and structural unemployment. Provide one policy measure appropriate for each type. [4 marks]
问题： 区分周期性失业和结构性失业。为每种类型提供一项合适的政策措施。[4分]
Cyclical unemployment is caused by a lack of aggregate demand in the economy during a recession. Workers lose their jobs because demand for goods and services falls, leading firms to reduce output. This is involuntary unemployment linked to the business cycle. Structural unemployment occurs when there is a mismatch between the skills of workers and the skills demanded by employers, often due to long-term changes in the economy such as technological advance or deindustrialisation. For cyclical unemployment, expansionary fiscal or monetary policy (e.g., a cut in interest rates or increased government spending) can boost aggregate demand. For structural unemployment, supply-side policies such as retraining programmes and improved education are needed to equip workers with relevant skills and enhance geographical mobility.
周期性失业是由经济衰退期间总需求不足引起的。工人失业是因为对商品和服务的需求下降，导致企业减少产出。这是一种与商业周期相关的非自愿失业。结构性失业发生在工人的技能与雇主所需技能不匹配时，通常由技术变革或去工业化等经济的长期变化引起。对于周期性失业，扩张性财政或货币政策（如降低利率或增加政府支出）可以提振总需求。对于结构性失业，需要供给侧政策，例如再培训计划和改善教育，以使工人具备相关技能并增强地域流动性。
9. Exchange Rates and International Trade | 汇率与国际贸易
Question: The pound sterling depreciates significantly against the euro. Assess the likely impact on a UK firm that imports raw materials from the eurozone and exports finished products to eurozone countries. [6 marks]
问题： 英镑兑欧元大幅贬值。评估这对一家从欧元区进口原材料并向欧元区国家出口成品的英国公司可能产生的影响。[6分]
A depreciation of the pound means that each pound buys fewer euros, making imports more expensive. For the UK firm, the cost of raw materials imported from the eurozone rises, increasing its production costs and potentially squeezing profit margins unless it can pass costs onto consumers. However, the firm's export competitiveness improves because its finished products become cheaper for eurozone buyers when priced in euros. If demand for its exports is price elastic, the volume of exports will increase by a greater proportion than the fall in price, raising export revenue. The net effect depends on the balance between these two forces. If the firm imports a high proportion of its inputs but sells a lower share abroad, the cost increase may outweigh the export benefit, harming overall profits. Analysis should also consider hedging strategies and long-term contracts that might delay the impact.
英镑贬值意味着每英镑能购买的欧元更少，使进口更昂贵。对于这家英国公司，从欧元区进口的原材料成本上升，增加了其生产成本，可能挤压利润率，除非能将成本转嫁给消费者。然而，该公司出口竞争力提高，因为其成品在以欧元定价时对欧元区买家来说变得更便宜。如果其出口的需求价格弹性大，出口量的增加比例将超过价格下降的比例，从而提高出口收入。净效应取决于这两种力量之间的平衡。如果公司进口投入品的比例很高但在国外销售的比例较低，成本上升可能超过出口收益，损害整体利润。分析还应考虑对冲策略和可能延迟影响的长期合同。
10. Inflation – Measurement and Consequences | 通货膨胀 – 衡量与后果
Question: Explain how the Consumer Prices Index (CPI) is used to measure inflation in the UK. Briefly discuss one consequence of high inflation for savers. [4 marks]
问题： 解释消费者价格指数（CPI）如何用于衡量英国的通货膨胀。简要讨论高通货膨胀对储户的一个影响。[4分]
The CPI measures the change in the price of a representative basket of goods and services purchased by a typical UK household. The Office for National Statistics (ONS) collects prices for around 700 items from various locations, weighted according to their importance in household spending. The index is set to 100 in a base year, and the annual percentage change in the index indicates the rate of inflation. For savers, high inflation erodes the real value of their savings. If the nominal interest rate on a savings account is lower than the inflation rate, the real return becomes negative, meaning that the purchasing power of the saved money falls over time. This discourages saving and can unfairly penalize those who rely on fixed interest income, such as pensioners.
CPI 衡量一个典型英国家庭所购买的一篮子代表性商品和服务的价格变化。国家统计局（ONS）从不同地点收集约 700 种商品的价格，并根据其在家庭支出中的重要性进行加权。指数在基年被设定为 100，指数的年度百分比变化反映了通货膨胀率。对于储户，高通货膨胀会侵蚀其储蓄的实际价值。如果储蓄账户的名义利率低于通货膨胀率，那么实际回报变为负值，意味着储蓄资金的购买力随着时间的推移而下降。这会抑制储蓄，并可能不公平地损害依赖固定利息收入的人，例如养老金领取者。
Published by TutorHao | Economics Revision Series | aleveler.com
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