📚 Year 10 AQA Economics: Unit Test Mock Paper Walkthrough | Year 10 AQA 经济学：单元测试模拟卷解析
Welcome to this comprehensive walkthrough of a Year 10 AQA Economics unit test mock paper. This article breaks down a typical assessment covering the first half of the GCSE 9-1 specification, focusing on the introductory microeconomic concepts of How Markets Work. Each question is presented with a model answer and detailed explanation to reinforce your understanding of key terms, diagrams, calculations, and evaluation points. Use this as a revision tool to identify common mistakes and sharpen your exam technique.
欢迎来到这份完整的 Year 10 AQA 经济学单元测试模拟卷解析。本文分解了一份典型评估卷，覆盖 GCSE 9-1 课程的前半部分，重点为“市场如何运行”的微观经济学基础概念。每道题都提供了标准答案和详细解释，以巩固你对关键术语、图表、计算和评价要点的理解。请将此作为复习工具，发现常见错误并提升你的考试技巧。
1. Question 1: The Basic Economic Problem | 问题1：基本经济问题
Question: Define the basic economic problem and explain why opportunity cost arises from it. (4 marks)
问题：定义基本经济问题并解释为什么机会成本由此产生。（4分）
The basic economic problem is that resources are scarce, but human wants are infinite. This means that choices must be made about how to allocate these limited resources. Because we cannot have everything we want, choosing one option necessarily involves giving up the next best alternative. That sacrificed alternative is the opportunity cost. For example, a government with a fixed budget that chooses to build a new hospital must forgo the next best use of those funds, such as building a school.
基本经济问题在于资源是稀缺的，而人类的欲望是无限的。这意味着必须就如何分配有限资源做出选择。由于我们无法拥有一切想要的东西，选择某一个选项必然意味着放弃次优替代方案。被放弃的那个替代方案就是机会成本。例如，一个拥有固定预算的政府选择修建一家新医院，就必须放弃这些资金的下一个最佳用途，比如修建一所学校。
2. Question 2: Factors of Production | 问题2：生产要素
Question: Identify the four factors of production and give an example of each. (4 marks)
问题：列举四种生产要素并各举一例。（4分）
The four factors are: Land, which includes all natural resources such as oil, forests, and land itself; Labour, the human effort used in production, e.g. a teacher; Capital, which is man-made aids to production like machinery, a factory building, or a delivery van; and Enterprise, the willingness to take risks and organise the other three factors, e.g. an entrepreneur starting a tech company. The reward for each factor is rent, wages, interest, and profit respectively.
四种要素分别是：土地，包括所有自然资源，如石油、森林和土地本身；劳动，用于生产的人力投入，如教师；资本，指人工制造的生产辅助工具，如机器、厂房或送货车辆；以及企业家精神，指承担风险并组织其他三种要素的意愿，如创立科技公司的创业者。各要素的回报分别是地租、工资、利息和利润。
3. Question 3: Production Possibility Frontier (PPF) | 问题3：生产可能性边界（PPF）
Question: Using a PPF diagram, illustrate the concepts of opportunity cost, efficiency, and economic growth. (6 marks)
问题：运用 PPF 图形说明机会成本、效率与经济增长的概念。（6分）
A PPF shows the maximum combinations of two goods an economy can produce with given resources and technology. Points on the curve (e.g. A and B) represent productive efficiency. Moving from A to B shows opportunity cost: to gain more consumer goods, you sacrifice some capital goods. A point inside the curve (C) indicates inefficient use of resources. If the entire curve shifts outward, it illustrates economic growth, which can be caused by an increase in the quantity or quality of resources or technological progress.
PPF 显示了一个经济体在给定资源与技术下能生产的两种商品最大组合。曲线上的点（如 A 与 B）代表生产效率。从 A 移动到 B 体现出机会成本：为获得更多消费品，你牺牲了一些资本品。曲线内部的点（C）表示资源利用无效率。如果整条曲线向外移动，则说明发生了经济增长，这可能是由于资源数量或质量的提升，或者技术进步引起的。
4. Question 4: Demand and Supply Basics | 问题4：需求与供应基础
Question: Explain the law of demand and identify two factors that can shift the demand curve to the right. (4 marks)
问题：解释需求定律并指出两个能使需求曲线右移的因素。（4分）
The law of demand states that, ceteris paribus, as the price of a good falls, the quantity demanded extends, so the demand curve slopes downward. Two factors that can shift the entire demand curve to the right (increase in demand at every price) are a rise in consumer income (for a normal good) and a successful advertising campaign that increases the good’s popularity. Other factors include changes in the price of substitutes or complements, and changes in tastes and fashions.
需求定律认为，在其他条件不变时，商品价格下降会导致需求量增加，因此需求曲线向下倾斜。两个能使整个需求曲线向右移动（在每个价格水平上需求增加）的因素是：消费者收入增加（对于正常商品而言）以及成功的广告活动提高了商品的受欢迎程度。其他因素还包括替代品或互补品价格的变化，以及品味与时尚的变化。
5. Question 5: Market Equilibrium and Disequilibrium | 问题5：市场均衡与失衡
Question: With the help of a diagram, explain how a market moves to equilibrium after a surplus arises at the initial price. (5 marks)
问题：借助图形，解释当初始价格出现盈余后市场如何趋向均衡。（5分）
If the current price is above the equilibrium, quantity supplied exceeds quantity demanded, creating a surplus. Firms find they cannot sell all their output, so they start cutting prices to attract more customers. As the price falls, the quantity supplied contracts (movement along the supply curve) and the quantity demanded extends (movement along the demand curve). This process continues until quantity supplied equals quantity demanded at the equilibrium price, eliminating the surplus.
如果当前价格高于均衡水平，供给量会超过需求量，形成盈余。企业发现无法售出所有产量，于是开始降价以吸引更多顾客。随着价格下降，供给量收缩（沿供给曲线移动），需求量扩张（沿需求曲线移动）。这一过程持续到供给量与需求量在均衡价格处相等，盈余被消除。
6. Question 6: Price Elasticity of Demand (PED) Calculation | 问题6：需求价格弹性（PED）计算
Question: The price of a cinema ticket increases from £8 to £10, and the quantity demanded per week falls from 400 to 300. Calculate PED and state whether demand is elastic or inelastic. (4 marks)
问题：电影票价格从 8 英镑涨到 10 英镑，每周需求量从 400 张降至 300 张。计算 PED 并判断需求是富有弹性还是缺乏弹性。（4分）
%Δ Price = (10 - 8) / 8 × 100 = 25%
%Δ Price = (10 - 8) / 8 × 100 = 25%
%Δ Quantity Demanded = (300 - 400) / 400 × 100 = -25%
%Δ 需求量 = (300 - 400) / 400 × 100 = -25%
PED = %Δ Qd / %Δ P = -25% / 25% = -1.0
PED = %Δ Qd / %Δ P = -25% / 25% = -1.0
astic. This means a price increase leads to a proportional fall in quantity demanded, so total revenue remains unchanged. Students should note that a value greater than 1 is price elastic, and less than 1 is price inelastic.
忽略负号后的数值为 1.0。由于 PED = 1，需求是单位弹性的。这意味着价格上涨会带来需求量同比例下降，因此总收入保持不变。学生应注意，大于 1 为富有价格弹性，小于 1 为缺乏价格弹性。
7. Question 7: Market Failure — Negative Externalities | 问题7：市场失灵——负外部性
Question: Explain how the production of electricity from fossil fuels can lead to market failure. (6 marks)
问题：解释化石燃料发电如何导致市场失灵。（6分）
Market failure occurs when the free market fails to allocate resources efficiently. When electricity is produced by burning coal, it creates negative externalities such as air pollution and greenhouse gas emissions. These costs are borne by third parties and are not included in the firm’s private costs. As a result, the social cost (private cost + external cost) is higher than the private cost. In a free market, output is determined where marginal private cost equals marginal private benefit, leading to overproduction and overconsumption beyond the socially optimum level. This represents a misallocation of resources.
市场失灵是指自由市场无法有效配置资源。当燃烧煤炭发电时，会产生空气污染和温室气体排放等负外部性。这些成本由第三方承担，并未计入企业的私人成本。因此，社会成本（私人成本 + 外部成本）高于私人成本。在自由市场中，产量由边际私人成本等于边际私人收益决定，导致超出社会最优水平的过度生产和过度消费。这体现了资源配置的错位。
8. Question 8: Government Intervention — Indirect Taxation | 问题8：政府干预——间接税
Question: Analyse how an indirect tax on sugary drinks can reduce welfare loss. (5 marks)
问题：分析对含糖饮料征收间接税如何减少福利损失。（5分）
A sugary drinks tax shifts the supply curve to the left (vertically upward by the amount of the tax). This raises the price for consumers and reduces the quantity traded. If the original market produced a negative externality such as obesity-related healthcare costs, the tax internalises the externality by making the price better reflect the true social cost. The new equilibrium moves closer to the socially optimum output, reducing the deadweight loss of overconsumption. The effectiveness depends on the PED: if demand is inelastic, quantity falls less and health benefits may be limited.
对含糖饮料征税会使供给曲线向左移动（垂直上移税额的幅度）。这会提高消费者的购买价格并减少交易量。如果原市场存在负外部性，如与肥胖相关的医疗费用，那么税收通过使价格更真实地反映社会成本，将外部性内部化。新的均衡点更接近社会最优产量，减少了过度消费带来的无谓损失。其有效性取决于需求价格弹性：如果需求缺乏弹性，数量下降较小，健康收益可能有限。
9. Question 9: Competitive Markets | 问题9：竞争市场
Question: Compare the key features of perfect competition and monopoly. (6 marks)
问题：比较完全竞争与垄断的主要特征。（6分）
In perfect competition, there are many small firms, no barriers to entry or exit, homogeneous products, and firms are price takers. Monopoly features a single dominant firm, high barriers to entry, and unique products, giving the firm price-making power. In a perfectly competitive market, firms only earn normal profits in the long run due to free entry, whereas a monopoly can earn supernormal profits even in the long run because barriers protect its market position. A GCSE student should also note that perfect competition tends to lead to lower prices and more consumer choice, while monopoly may result in higher prices, less choice, but potentially more innovation due to profit reinvestment.
在完全竞争中，存在众多小企业，没有进入或退出壁垒，产品同质，企业是价格接受者。垄断则指单一主导企业，进入壁垒高，产品独特，企业拥有价格制定权。在完全竞争市场中，由于自由进入，企业长期只能获得正常利润，而垄断企业即使在长期也能赚取超额利润，因为壁垒保护了其市场地位。GCSE 学生还应注意到，完全竞争往往会导致较低价格和更多消费者选择，而垄断可能导致较高价格、较少选择，但可能因利润再投资而带来更多创新。
10. Question 10: Labour Market and Wage Determination | 问题10：劳动力市场与工资决定
Question: Using a demand and supply diagram, explain why a professional footballer earns a much higher wage than a cleaner. (5 marks)
问题：运用供求图形，解释为何职业足球运动员的工资远高于清洁工。（5分）
The wage rate in a labour market is determined by the demand for and supply of labour. For professional footballers, supply is very low because only a tiny fraction of the population possesses the required talent and skills. At the same time, demand is very high due to the enormous revenue generated by broadcasting rights and sponsorship. The combination of low supply and high demand creates a high equilibrium wage. In contrast, the supply of cleaners is relatively high because the job requires fewer specialised qualifications, while demand is moderate. This results in a much lower equilibrium wage. Diagrammatically, the footballer’s market shows a leftward-shifted supply curve and a rightward-shifted demand curve compared with that of cleaners.
劳动力市场中的工资率由劳动力的需求与供给决定。对职业足球运动员而言，供给非常少，因为只有极少数人具备所需的天赋与技能。同时，需求非常高，因为转播权和赞助产生了巨额收入。低供给与高需求相结合，造就了高均衡工资。相比之下，清洁工的供给相对较大，因为该工作需要的专业资质较少，而需求处于中等水平，这便导致了低得多的均衡工资。用图形表示，与清洁工市场相比，足球运动员市场的供给曲线左移，需求曲线右移。
Published by TutorHao | Economics Revision Series | aleveler.com
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