📚 GCSE WJEC Economics: Detailed Explanation of Typical Exam Questions | GCSE WJEC 经济：典型例题详解
The WJEC GCSE Economics examination assesses your ability to apply economic concepts to real-world contexts. Typical questions include multiple-choice, short-answer, data-response, and extended evaluation tasks. This revision guide walks you through ten typical exam-style questions, providing model answers, key diagrams, and examiner advice to help you secure top marks.
WJEC GCSE 经济考试考查你将经济学概念应用于实际情境的能力。典型题型包括选择题、简答题、数据分析题和长篇评价题。本复习指南将通过十道典型考题，提供标准答案、关键图表和考官建议，帮助你获得高分。
1. Demand and Supply Shift Analysis | 需求与供给变动分析
Example question: “Explain the effect on the market for coffee of a rise in the price of tea, a substitute. Use a demand and supply diagram in your answer.” (4 marks)
例题：“解释替代品茶的价格上涨对咖啡市场的影响。在你的回答中使用需求与供给图。” (4分)
A rise in the price of tea makes coffee relatively cheaper, encouraging consumers to switch from tea to coffee. This increases the demand for coffee, shifting the demand curve to the right.
茶的价格上涨使咖啡相对更便宜，促使消费者从茶转向咖啡。这增加了咖啡的需求，需求曲线向右移动。
With supply unchanged, the new equilibrium occurs at a higher price and a higher quantity. Label the axes, initial equilibrium (P1, Q1), new demand curve (D2), and new equilibrium (P2, Q2) clearly on your diagram.
在供给不变的情况下，新均衡出现在更高的价格和更高的数量上。在图上清楚标注坐标轴、初始均衡(P1, Q1)、新需求曲线(D2)和新均衡(P2, Q2)。
A common mistake is to shift the supply curve instead. Remember that only a change in a non-price determinant of demand shifts the demand curve; here, the price of a related good is the factor.
常见错误是移动了供给曲线。请记住，只有需求非价格决定因素的变化才会移动需求曲线；此处相关商品的价格就是这样的因素。
2. Calculating Price Elasticity of Demand | 需求价格弹性计算
Example: “A cinema increases ticket price from £8 to £10, and daily ticket sales fall from 500 to 400. Calculate the price elasticity of demand (PED) and state what the value means for the cinema’s revenue.” (4 marks)
例题：“一家电影院将票价从8英镑提高到10英镑，每天售票量从500张下降到400张。计算需求价格弹性(PED)并说明该数值对电影院收入意味着什么。” (4分)
Step 1: Calculate percentage change in quantity demanded. %ΔQd = [(400−500)/500] × 100 = (−100/500) × 100 = −20%. Step 2: Calculate percentage change in price. %ΔP = [(10−8)/8] × 100 = (2/8) × 100 = 25%.
第1步：计算需求量的百分比变化。%ΔQd = [(400−500)/500] × 100 = (−100/500) × 100 = −20%。第2步：计算价格的百分比变化。%ΔP = [(10−8)/8] × 100 = (2/8) × 100 = 25%。
PED = %ΔQd / %ΔP = −20% / 25% = −0.8. The negative sign is ignored when interpreting magnitude, so PED = 0.8, which is less than 1 – demand is price inelastic.
需求价格弹性 = %ΔQd / %ΔP = −20% / 25% = −0.8。解释弹性大小时忽略负号，因此 PED = 0.8，小于1，说明需求缺乏弹性。
Because demand is inelastic, the percentage rise in price (25%) outweighed the percentage fall in quantity (20%), so total revenue increased. Revenue before: £8 × 500 = £4,000; after: £10 × 400 = £4,000. The revenue actually stayed the same in this particular case, but if the calculation had been slightly different, it would rise. Always link the PED coefficient to total revenue change.
由于需求缺乏弹性，价格上升的百分比(25%)大于数量下降的百分比(20%)，因此总收入应当增加。计算先前收入：8英镑×500=4000英镑；之后：10英镑×400=4000英镑。在本例中恰好持平，但若系数略有不同，收入会上升。一定要将PED系数与总收入变化联系起来。
3. Negative Externalities and Market Failure | 负外部性与市场失灵
Example: “Using a diagram, explain how the production of steel creates a negative externality and leads to market failure.” (6 marks)
例题：“运用图表，解释钢铁生产如何产生负外部性并导致市场失灵。” (6分)
In a free market, steel producers consider only their private costs of production, such as wages and raw materials. They ignore external costs like pollution and health impacts on nearby residents. The social cost = private cost + external cost.
在自由市场中，钢铁生产者只考虑私人生产成本，如工资和原材料。他们忽视污染和对附近居民健康影响等外部成本。社会成本 = 私人成本 + 外部成本。
Draw a diagram with two supply curves: Supply (private) = marginal private cost, and Supply (social) = marginal social cost, which lies to the left (higher) to reflect the external cost. The demand curve = marginal private benefit = marginal social benefit in this case (no external benefit).
画图时包含两条供给曲线：供给(私人) = 边际私人成本，以及供给(社会) = 边际社会成本，后者位于左侧(更高)，以反映外部成本。需求曲线 = 边际私人收益，本例中等于边际社会收益(无外部收益)。
The free-market equilibrium occurs where private supply meets demand, with output Q_market and price P_market. The socially optimal equilibrium is where social supply meets demand, resulting in lower output Q_opt and higher price P_opt. Overproduction of Q_market minus Q_opt represents the welfare loss triangle.
自由市场均衡在私人供给与需求相交处，产量为Q_market，价格为P_market。社会最优均衡在社会供给与需求相交处，产量较低为Q_opt，价格较高为P_opt。Q_market 减去 Q_opt 的过度生产部分代表了福利损失三角。
Market failure occurs because the market overproduces the good, generating a deadweight loss. The negative externality means the good is priced too low and consumed too much from society’s perspective.
市场失灵的发生是因为市场过度生产该商品，产生无谓损失。负外部性意味着从社会角度看，该商品定价过低且消费过多。
4. Government Intervention: Indirect Tax | 政府干预：间接税
Example: “Using a diagram, analyse the impact of an indirect tax on cigarettes on the market and on government revenue.” (6 marks)
例题：“运用图表，分析对香烟征收间接税对市场和政府收入的影响。” (6分)
An indirect tax increases the cost of production for cigarette manufacturers. This shifts the supply curve vertically upwards (or to the left) by the amount of the tax. The new equilibrium price rises to Pc (price consumers pay), and the quantity falls from Q1 to Q2.
间接税增加了香烟生产者的成本。这使供给曲线垂直向上(或向左)移动，移动幅度等于税额。新均衡价格上升至Pc(消费者支付的价格)，数量从Q1下降至Q2。
Producers receive a lower net price Pp after paying the tax per unit. The tax burden is shared: consumers pay more (Pc to P1), producers receive less (P1 to Pp). The more inelastic the demand, the greater the share of tax borne by consumers.
生产者缴纳每单位税额后获得的净价格Pp较低。税负由双方分担：消费者支付更多(Pc至P1)，生产者收入减少(P1至Pp)。需求越缺乏弹性，消费者承担的税负比例越大。
Government revenue is the tax per unit multiplied by the new quantity sold (Q2). This is represented by the rectangle between the two supply curves up to Q2. The tax revenue can be used to fund healthcare for smoking-related illnesses.
政府收入等于每单位税额乘以新销售量(Q2)。在图中表现为两条供给曲线之间直到Q2的矩形区域。税收收入可用于资助与吸烟相关的疾病医疗。
5. Types of Unemployment | 失业类型
Example: “Distinguish between cyclical unemployment and structural unemployment, and suggest one policy to reduce each.” (6 marks)
例题：“区分周期性失业和结构性失业，并针对每种类型提出一项降低失业的政策。” (6分)
Cyclical (demand-deficient) unemployment occurs due to a lack of aggregate demand in the economy during a recession. Workers lose jobs because firms reduce output when demand falls. It tends to rise in a downturn and fall during a boom.
周期性(需求不足)失业是由于经济衰退期间总需求不足而产生的。当需求下降时企业减产，工人因此失业。这种失业往往在经济低迷时上升，在繁荣时下降。
Structural unemployment arises from a mismatch between the skills workers have and those demanded by employers, often due to deindustrialisation or technological change. For example, a decline in manufacturing leaves factory workers out of work, while jobs in IT require different skills.
结构性失业源于工人所具备的技能与雇主所要求的技能之间的不匹配，这通常是由去工业化或技术变革造成的。例如，制造业衰落使工厂工人失业，而IT行业的工作需要不同的技能。
To reduce cyclical unemployment, expansionary fiscal or monetary policy can be used to boost aggregate demand, for example by cutting taxes or lowering interest rates. To reduce structural unemployment, government can invest in retraining and education programmes to help workers acquire new skills, improving occupational mobility of labour.
为减少周期性失业，可采用扩张性财政或货币政策提振总需求，例如减税或降低利率。为减少结构性失业，政府可以投资再培训和教育项目，帮助工人获得新技能，提高劳动力的职业流动性。
6. Causes of Inflation | 通货膨胀的成因
Example: “Explain one cause of cost-push inflation.” (4 marks)
例题：“解释成本推动型通货膨胀的一个成因。” (4分)
Cost-push inflation occurs when the costs of production rise, prompting firms to increase prices to protect their profit margins. A key driver is a sharp increase in the price of raw materials, such as oil.
成本推动型通货膨胀发生在生产成本上升时，企业为保护利润率而提高价格。一个关键驱动因素是原材料(如石油)价格的大幅上涨。
For instance, a rise in global oil prices increases transport and energy costs for businesses across the economy. In response, firms push up their final prices, leading to a sustained rise in the general price level. This is illustrated by a leftward shift of the aggregate supply curve.
例如，全球油价上涨会提高整个经济中企业的运输和能源成本。对此，企业提高其最终产品价格，导致总体价格水平持续上升。这在宏观图中表现为总供给曲线向左移动。
Other causes include rising wage demands (wage-price spiral) or increases in import prices following a currency depreciation. In your exam, select one cause and develop it with a real-world example for full marks.
其他成因包括工资需求上升(工资-价格螺旋)或货币贬值后进口价格上涨。在考试中，选择一个成因并用现实世界的例子加以展开，以获得满分。
7. Monetary Policy: Interest Rates | 货币政策：利率
Example: “Explain how an increase in interest rates could help to reduce demand-pull inflation.” (6 marks)
例题：“解释提高利率如何有助于降低需求拉动型通货膨胀。” (6分)
When the central bank raises interest rates, the cost of borrowing rises and the return on saving increases. This discourages consumer spending, especially on credit-financed purchases such as cars and homes, and reduces business investment because loans become more expensive.
当中央银行提高利率时，借贷成本上升，储蓄回报增加。这会抑制消费者支出，尤其是通过信贷购买的大件商品如汽车和住房，同时由于贷款变得更昂贵，企业投资也会减少。
Lower consumption and investment reduce aggregate demand (AD), shifting the AD curve to the left. This eases the upward pressure on the price level, helping to curb demand-pull inflation.
消费和投资的下降会减少总需求(AD)，使AD曲线向左移动。这缓解了价格水平的上升压力，有助于抑制需求拉动型通货膨胀。
Additionally, higher interest rates may lead to an appreciation of the exchange rate, as foreign investors seek higher returns. A stronger currency makes imports cheaper and exports more expensive, reducing net exports and further dampening AD.
此外，更高的利率可能导致汇率升值，因为外国投资者追求更高回报。货币走强使进口更便宜、出口更贵，从而减少净出口，进一步抑制总需求。
8. Exchange Rates and Trade | 汇率与贸易
Example: “Analyse the likely impact of a depreciation of the pound on the UK’s current account balance.” (6 marks)
例题：“分析英镑贬值对英国经常账户余额可能产生的影响。” (6分)
A depreciation means the pound is worth less in terms of foreign currencies. This makes UK exports cheaper for overseas buyers and imports more expensive for UK consumers. Consequently, the volume of exports is expected to rise, and the volume of imports is expected to fall.
贬值意味着英镑相对于外币价值降低。这使得英国出口商品对海外买家更便宜，而进口商品对英国消费者更昂贵。因此，出口量预计上升，进口量预计下降。
However, in the short run, the current account might worsen due to the J-curve effect. Immediately after depreciation, import prices rise faster than export quantities adjust, because existing contracts and plans take time to change. The value of imports (price × quantity) spikes, widening the deficit temporarily before it eventually improves.
然而，由于J曲线效应，短期内经常账户可能会恶化。贬值后立即出现的是进口价格比出口量调整得更快，因为现有合同和计划需要时间改变。进口价值(价格×数量)飙升，暂时扩大赤字，之后才会改善。
Over the longer term, provided demand for exports and imports is price elastic (Marshall-Lerner condition holds), the trade balance should improve. If demand is inelastic, the deficit may persist. The assessment should therefore consider the price elasticity of demand for traded goods.
长期来看，只要进出口需求是价格富有弹性的(满足马歇尔-勒纳条件)，贸易余额应当改善。如果需求缺乏弹性，赤字可能持续。因此，评估时应考虑贸易商品的需求价格弹性。
9. Economic Growth and Living Standards | 经济增长与生活水平
Example: “Evaluate the view that economic growth always improves living standards.” (8 marks)
例题：“评价‘经济增长总能提高生活水平’这一观点。” (8分)
On one hand, higher GDP typically means rising incomes, enabling people to afford better housing, healthcare, and education. It also generates increased tax revenue, which the government can invest in public services and infrastructure, improving overall welfare.
一方面，更高的GDP通常意味着收入增加，使人们能够负担更好的住房、医疗和教育。它还带来更多税收收入，政府可投资于公共服务和基础设施，从而提高整体福利。
On the other hand, rapid growth can bring negative consequences. Environmental damage, pollution, and resource depletion may reduce the quality of life. Additionally, if the benefits of growth are unevenly distributed, income inequality may widen, leaving poorer households with little improvement in their living standards.
另一方面，快速增长可能带来负面后果。环境破坏、污染和资源枯竭可能降低生活质量。此外，如果增长的收益分配不均，收入不平等可能加剧，贫困家庭的生活水平几乎得不到改善。
Furthermore, GDP measures market output only; it ignores non-market activities like childcare, the value of leisure, and the underground economy. A rise in GDP might be accompanied by longer working hours and higher stress, which could reduce well-being. Hence, economic growth does not always improve living standards for all.
而且，GDP仅衡量市场产出，忽略了育儿等非市场活动、闲暇价值以及地下经济。GDP的增长可能伴随着更长的工作时间和更高的压力，这反而降低幸福感。因此，经济增长并不总能提高所有人的生活水平。
10. Building Effective Evaluation Answers | 构建有效的评价性答案
Example: “Evaluate the use of fiscal policy to bring down the rate of unemployment in the UK.” (12 marks)
例题：“评价运用财政政策降低英国失业率的做法。” (12分)
Start by defining fiscal policy – changes in government spending and taxation. Explain how expansionary fiscal policy, e.g., increased spending on infrastructure, can directly create jobs and inject demand into the economy, reducing cyclical unemployment.
首先定义财政政策——政府支出与税收的调整。解释扩张性财政政策(如增加基础设施支出)如何能够直接创造就业并为经济注入需求，从而降低周期性失业。
Then analyse the drawbacks. Higher government borrowing may crowd out private investment by pushing up interest rates, and large budget deficits could lead to concerns about government debt. Moreover, fiscal policy takes time to plan and implement (time lags), so it might not address unemployment immediately.
接着分析弊端。政府借款增加可能会推高利率，挤出私人投资，而巨额预算赤字可能引发对政府债务的担忧。此外，财政政策的规划和实施需要时间(时滞)，因此可能无法立即应对失业。
Consider the type of unemployment – fiscal policy is less effective against structural unemployment, which requires supply-side measures like training and education. The effectiveness also depends on the state of the economy: in a deep recession, fiscal stimulus may be more effective because there is spare capacity.
考虑失业的类型——财政政策对结构性失业的效果较差，后者需要培训和教育的供给侧措施。其效果还取决于经济状况：在深度衰退中，由于存在闲置产能，财政刺激可能更有效。
Conclude with a justified judgement. While fiscal policy can be a powerful tool for reducing demand-deficient unemployment, it works best as part of a broader package that includes supply-side reforms, careful timing, and consideration of long-term fiscal sustainability.
最后做出有依据的判断。虽然财政政策是减少需求不足型失业的有力工具，但当它作为更广泛政策组合的一部分时效果最佳，该组合应包括供给侧改革、谨慎的时机把握以及对长期财政可持续性的考虑。
Published by TutorHao | Economics Revision Series | aleveler.com
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