📚 Year 10 OCR Economics: Unit Test Mock Paper Walkthrough | Year 10 OCR 经济：单元测试模拟卷解析
Welcome to this detailed walkthrough of a Year 10 OCR Economics unit test mock paper. This resource is designed to help you understand the structure of typical exam questions, master key economic concepts, and avoid common mistakes. Each section below covers a different question type, from multiple-choice to data response and essay writing. Use the paired English–Chinese explanations to deepen your understanding and build confidence for the real assessment.
欢迎来到本次 Year 10 OCR 经济单元测试模拟卷的详细解析。这份资料旨在帮助你了解典型考试题的结构，掌握关键的经济概念，并避免常见错误。下面的每一节都涵盖了不同的题型，从选择题到数据分析题再到议论文写作。利用这些成对的中英文解释来加深理解，并为真正的考试建立信心。
1. Multiple-Choice Questions: Basic Concepts | 选择题：基本概念
Question 1: 'What is the basic economic problem?' The correct answer is scarcity – unlimited wants but limited resources. OCR frequently tests this foundational idea in multiple-choice items, often disguising it with terms like 'shortage' or 'poverty'. Scarcity means that choices must be made, which leads to opportunity cost.
题目1：“基本经济问题是什么？”正确答案是稀缺性——无限的欲望但有限的资源。OCR经常在选择题中考察这个基础概念，通常用“短缺”或“贫困”等术语来混淆。稀缺性意味着必须做出选择，这就引出了机会成本。
Question 2: 'Which of the following is a factor of production?' The four factors are land, labour, capital and enterprise. A common distractor is money, which is not a factor of production but a medium of exchange. Remember that capital refers to man-made aids for production, such as machinery.
题目2：“以下哪一项是生产要素？”四种生产要素是土地、劳动力、资本和企业家才能。一个常见的干扰项是货币，它并不是生产要素，而是一种交换媒介。记住资本是指用于生产的人造辅助工具，比如机器。
Question 3: 'What is meant by a normative statement?' A normative statement is based on value judgements and cannot be tested as true or false. It often includes words like 'should' or 'ought'. This contrasts with positive statements, which are objective and testable.
题目3：“规范陈述是什么意思？”规范陈述基于价值判断，无法被证明是真是假。它通常包含“应该”或“应当”等词语。这与实证陈述形成对比，后者是客观且可检验的。
2. Multiple-Choice Questions: Demand and Supply | 选择题：需求与供给
Question 4 asks what happens to the demand curve for cinema tickets when a popular film is released. The demand curve shifts to the right (an increase in demand) because the film acts as a non-price determinant, changing tastes and preferences. A move along the same demand curve would be caused only by a change in price, not by a new film.
题目4问的是，一部热门电影上映后，电影票的需求曲线会如何变化。需求曲线向右移动（需求增加），因为电影作为一种非价格决定因素，改变了消费者的口味和偏好。仅仅由价格变化引起的才会是在同一条需求曲线上的移动，而不是由新电影引起的。
Question 5: 'Which event would shift the supply curve for smartphones to the left?' A leftward shift (decrease in supply) could be caused by higher production costs, such as a rise in the price of microchips. A subsidy or improved technology would shift supply to the right. Students often confuse supply and quantity supplied – changes in price alter quantity supplied, not the whole curve.
题目5：“哪个事件会使智能手机的供给曲线向左移动？”向左移动（供给减少）可能由更高的生产成本引起，例如芯片价格上涨。补贴或技术进步会使供给曲线向右移动。学生经常混淆供给和供给量——价格变化改变的是供给量，而不是整条曲线的移动。
3. Definition Questions: Key Terms | 术语定义题：关键术语
Short-answer definition questions carry a few marks each. For instance, 'Define price elasticity of demand (PED).' antity demanded to a change in price. Write it clearly and add the formula if asked: PED = % change in quantity demanded ÷ % change in price. Always provide the formula in brackets to show full understanding.
简答题的定义题每题通常占几分。例如，“定义需求的价格弹性（PED）。”准确的定义是：需求量对价格变化的反应程度。要清晰地写出定义，如果要求则附上公式：PED = 需求量变动百分比 ÷ 价格变动百分比。始终在括号里写出公式，以展示充分的理解。
Another common definition: 'opportunity cost'. This is the value of the next best alternative forgone when a choice is made. Use an everyday example: if a student spends an hour studying instead of working a part-time job, the opportunity cost is the wage they could have earned.
另一个常见的定义是：“机会成本”。它是指做出选择时所放弃的次优替代品的价值。用一个日常例子来说明：如果一个学生花一小时学习而不是做兼职，机会成本就是他们本可以赚到的工资。
Be careful to define 'public goods' correctly: non-excludable and non-rivalrous. Do not confuse with goods provided by the government, as not all government-provided services are pure public goods. Street lighting is a classic pure public good.
要正确定义“公共物品”：具有非排他性和非竞争性。不要与政府提供的商品混淆，因为并非所有政府提供的服务都是纯公共物品。路灯是典型的纯公共物品。
4. Calculation Questions: Elasticity and Equilibrium | 计算题：弹性与均衡
ute PED, PES or YED. In the mock paper, one task is to calculate PED when price rises from £10 to £, causing quantity demanded to fall from 500 to 400 units. First, find percentage changes: %ΔP = (12−10)/10 × 100 = 20%. %ΔQd = (400−500)/500 × 100 = −20%. PED = −20% ÷ 20% = −1.0. Ignore the minus sign for the final answer: 1.0, unit elastic.
计算题通常要求你从需求与供给表中找出均衡价格和数量，或者计算需求价格弹性、供给价格弹性或需求收入弹性。在模拟卷中，一个任务是当价格从 10 英镑上升到 12 英镑，需求量从 500 单位下降到 400 单位，计算 PED。首先求百分比变化：%ΔP = (12−10)/10 × 100 = 20%。%ΔQd = (400−500)/500 × 100 = −20%。PED = −20% ÷ 20% = −1.0。最终答案忽略负号：1.0，单位弹性。
calculation is finding the total revenue change. With the above numbers, initial revenue = £10 × 500 = £5000; new revenue = £12 × 400 = £4800. Revenue falls by £ o a decrease in total revenue. This is a valuable application point for a 4-mark question.
另一个常见计算是求总收益的变化。按照上面的数字，初始收益 = 10 英镑 × 500 = 5000 英镑；新收益 = 12 英镑 × 400 = 4800 英镑。收益减少了 200 英镑，表明当需求具有单位弹性时提价会导致总收益下降。这对于一道 4 分的应用题来说是一个有价值的要点。
For equilibrium, the mock paper might give a table: price £2 (Qd 1000, Qs 200); £4 (Qd 800, Qs 400); £6 (Qd 600, Qs 600); £8 (Qd 400, Qs 800). Equilibrium is at £6 where Qd = Qs = 600. Excess demand exists at £2 of 800 units. Use clear units in your answer.
对于均衡，模拟卷可能给出一个表格：价格 2 英镑（需求量 1000，供给量 200）；4 英镑（需求量 800，供给量 400）；6 英镑（需求量 600，供给量 600）；8 英镑（需求量 400，供给量 800）。均衡点在 6 英镑，此时需求量等于供给量，为 600 单位。在 2 英镑时存在超额需求 800 单位。在答案中使用明确的单位。
5. Data Response: Interpreting a Graph | 数据分析题：解读图表
The mock includes a graph showing the market for petrol with a shift in the supply curve to the left due to an increase in crude oil prices. Explain the effect on equilibrium price and quantity. The leftward supply shift creates a new equilibrium with a higher price and lower quantity. Always label your graph axes and curves, and refer to 'P1, Q1' and 'P2, Q2' in your written analysis to show movement from original to new equilibrium.
模拟卷中包含一张显示汽油市场曲线变化的图表，由于原油价格上涨，供给曲线向左移动。解释这对均衡价格和数量的影响。供给曲线向左移动会形成一个新的均衡，价格更高而数量更低。务必要为图表轴线及曲线标注，并在书面分析中引用“P1、Q1”和“P2、Q2”，以显示从原始均衡到新均衡的变动。
When a burden of an indirect tax is introduced, the vertical distance between the initial supply curve and the post-tax supply curve represents the tax per unit. Identify the new equilibrium and split the tax burden between consumers (higher price) and producers (lower net revenue). This is perfect for a 6-mark analysis question.
当引入间接税负担时，初始供给曲线与税后供给曲线之间的垂直距离代表每单位的税额。找出新的均衡，并将税负分解为消费者负担（价格上涨部分）和生产者负担（净收入减少部分）。这非常适合用于 6 分的分析题。
Students should also discuss the relative elasticity of demand and supply when explaining who bears more of the tax. If demand is inelastic (e.g. petrol), consumers bear a larger share. If demand is elastic, producers absorb most of the tax. This extension shows analytical depth.
学生在解释谁承担更多税负时，还应讨论需求与供给的相对弹性。如果需求缺乏弹性（如汽油），消费者承担更大的份额。如果需求富有弹性，生产者则吸收大部分税款。这种拓展显示了分析的深度。
6. Analysis of Market Failure | 市场失灵分析
A typical 8-mark question in the mock paper asks to explain two types of market failure with examples. Negative externalities occur when third parties suffer from a transaction they are not involved in. For example, a factory emits pollution which harms local residents' health and cleaning costs. The marginal social cost (MSC) exceeds marginal private cost (MPC), leading to overproduction.
模拟卷中一道典型的 8 分题要求解释两种市场失灵并举例。负外部性发生在第三方因未参与的交易而受损时。例如，工厂排放污染物，损害当地居民的健康并增加清洁费用。边际社会成本（MSC）超过了边际私人成本（MPC），导致过度生产。
Positive externalities arise when third parties receive unintended benefits. Education provides private benefits to the learner but also society gains from a more productive workforce and lower crime rates. In a free market, under-consumption occurs because individuals ignore the external benefits, shown by MSB (marginal social benefit) > MPB (marginal private benefit).
正外部性发生在第三方获得意外收益时。教育为学习者带来私人收益，但社会也因更具生产力的劳动力和更低的犯罪率而获益。在自由市场中，由于个人忽视外部收益，消费不足就会发生，表现为边际社会收益（MSB）大于边际私人收益（MPB）。
Public goods combine non-excludability and non-rivalry, causing the free-rider problem where private firms are unwilling to provide them even though they are beneficial. Use a diagram to show the welfare loss triangle when MSC > MSB (negative externality) or MSB > MSC (positive externality).
公共物品兼具非排他性和非竞争性，导致搭便车问题，即私营企业不愿提供它们，即使它们是有益的。使用图表来显示当 MSC > MSB（负外部性）或 MSB > MSC（正外部性）时的福利损失三角区。
7. Government Intervention: Methods and Evaluation | 政府干预：方法与评估
The mock paper has a data-response section on sugar tax. Explain how an indirect tax on sugary drinks aims to reduce consumption and tackle obesity. The tax shifts the supply curve upward, increasing price and reducing quantity demanded. This internalises the externality: the higher price now reflects the healthcare costs to society. However, evaluate by noting that demand for sugary drinks may be inelastic (because they are addictive or cheap), limiting the reduction in consumption. A diagram showing the tax incidence is essential.
模拟卷中有一个关于糖税的数据分析部分。解释对含糖饮料征收间接税如何旨在减少消费并应对肥胖问题。税收使供给曲线向上移动，提高价格并减少需求量。这将外部性内部化：更高的价格现在反映了社会的医疗成本。然而，评估时要指出，对含糖饮料的需求可能是缺乏弹性的（因为它们具有成瘾性或价格低廉），从而限制了消费的减少。展示税收归宿的图表是必不可少的。
Another intervention is a maximum price (price ceiling) on rented property to make housing more affordable. Draw the price ceiling below equilibrium, creating excess demand (shortage). While benefiting some tenants, it may reduce the quality or supply of rented accommodation. Always include an evaluation point: a maximum price can create unintended consequences such as black markets or a decline in maintenance by landlords.
另一种干预手段是对租赁物业设定最高限价（价格上限），以使住房更可负担。将最高限价划在均衡价格之下，从而产生超额需求（短缺）。虽然使部分租户受益，但这可能会降低租赁住房的质量或供应。务必包含一个评估要点：最高限价可能产生意想不到的后果，例如黑市或房东减少维护。
Subsidies to renewable energy firms are examined in a 6-mark question. A subsidy shifts the supply curve to the right, lowering price and increasing quantity of green energy. This corrects a positive externality, as clean energy reduces pollution. But evaluate the cost to the government (opportunity cost of public funds) and the risk of firms becoming dependent on subsidies.
对可再生能源企业的补贴在一道 6 分的题目中进行了考察。补贴使供给曲线向右移动，降低绿色能源的价格并增加其数量。这纠正了正外部性，因为清洁能源减少了污染。但要评估政府付出的成本（公共资金的机会成本）以及企业变得依赖补贴的风险。
8. Elasticity and Business Decisions | 弹性与企业决策
This 8-mark essay question asks: 'Discuss how knowledge of price elasticity of demand (PED) and income elasticity of demand (YED) might influence a firm’s pricing and output strategies.' For PED, if demand is elastic, reducing price can increase total revenue; if inelastic, raising price increases revenue. Use a formula and a clear numerical example to show this. For YED, firms producing luxury goods (YED > 1) benefit from economic growth but suffer deeply in recessions. Normal necessities (YED between 0 and 1) are more stable. Inferior goods (YED < 0) see increased demand when incomes fall.
这道 8 分的议论文题问道：“讨论关于需求价格弹性（PED）和需求收入弹性（YED）的认识如何影响企业的定价和产出策略。”对于 PED，如果需求富有弹性，降价可以增加总收益；如果缺乏弹性，提价则增加收益。使用公式和一个清晰的数字例子来展示这一点。对于 YED，生产奢侈品（YED > 1）的企业从经济增长中获益，但在衰退中遭受重创。正常必需品（YED 在 0 到 1 之间）更加稳定。低档品（YED < 0）在收入下降时需求增加。
A strong answer would also link to complementary and substitute goods. For instance, a cinema might lower ticket prices (elastic demand) but keep popcorn prices high (inelastic, as it is a complement). Sophisticated use of cross elasticity of demand (XED) can earn top marks, though it is not always required at Year 10 level. Remember to structure the essay with an introduction, two developed paragraphs, and a brief conclusion or judgement.
一份出色的答案还会联系到互补品和替代品。例如，电影院可能会降低电影票价格（弹性需求），但保持爆米花高价（缺乏弹性，因为它是互补品）。对需求的交叉弹性（XED）的熟练运用可以获得高分，尽管在 Year 10 阶段并不总是需要。记住要以引言、两个展开的段落以及简短的结论或判断来构建文章结构。
9. Labour Market and Wage Determination | 劳动力市场与工资决定
A two-part question from the mock paper first asks to identify factors influencing the demand for labour, such as the demand for the final product (derived demand), productivity of workers, and the cost of other inputs including capital. For each factor, use a brief example. Secondly, explain why nurses in the public sector receive lower wages than professional footballers, despite the social value of their work.
模拟卷中一个由两部分组成的题目首先要求识别影响劳动力需求的因素，比如对最终产品的需求（引致需求）、工人的生产率，以及包括资本在内的其他投入的成本。对每个因素都用一个简短的例子说明。其次，解释为什么公共部门的护士虽然工作具有社会价值，但工资却低于职业足球运动员。
The answer lies in supply and demand: the supply of nurses is relatively elastic (many people qualify), whereas the supply of elite footballers is extremely inelastic because very few possess the required talent. Additionally, the revenue generated by footballers through ticket sales and broadcasting is enormous, shifting the derived demand for them far to the right. Use a supply and demand diagram with two sets of curves to illustrate the different equilibrium wages.
答案在于供给和需求：护士的供给相对富有弹性（许多人具备资格），而精英足球运动员的供给极其缺乏弹性，因为很少有人具备所需的天赋。此外，足球运动员通过门票销售和转播权产生的收入巨大，使得对他们的引致需求远远向右移动。用一套包含两组曲线的供给和需求图来说明不同的均衡工资水平。
Don't forget to mention non-monetary factors: working conditions, job security, and fringe benefits also affect total remuneration. An evaluation point could be that the government as a large employer in the healthcare sector can influence wages through policy, unlike the private sports entertainment industry.
不要忘记提及非货币因素：工作条件、工作保障和附带福利也会影响总报酬。一个评估点可能是，政府作为医疗保健行业的大型雇主可以通过政策影响工资，这与私营体育娱乐产业不同。
10. International Trade and Exchange Rates | 国际贸易与汇率
The final section of the mock paper includes a data set on trade flows and exchange rates. A typical question asks: 'Explain two benefits of international trade to an economy.' Benefits include access to a wider variety of goods, lower prices through comparative advantage, economies of scale, and increased competition which improves efficiency. Use the concept of specialisation linked to lower average costs.
模拟卷的最后一部分包含一组关于贸易流量和汇率的数据。一道典型题目问道：“解释国际贸易对某个经济体的两个好处。”好处包括：可获得更多种类的商品、通过比较优势实现更低的价格、规模经济，以及通过竞争加剧提高效率。运用与降低平均成本相联系的专业化概念。
A second part on exchange rates might present a scenario where the pound appreciates against the euro. Explain the effects on UK exporters and importers. An appreciation makes UK exports more expensive and imports cheaper, potentially worsening the trade balance. However, cheap imports reduce input costs for firms that rely on imported raw materials. Balance your answer with both short-run and long-run perspectives.
关于汇率的第二部分可能给出英镑对欧元升值的场景。解释这对英国出口商和进口商的影响。升值使英国出口商品更昂贵而进口商品更便宜，可能恶化贸易平衡。然而，廉价进口品降低了依赖进口原材料企业的投入成本。用短期和长期的视角来平衡你的答案。
Calculations may involve converting prices: if a UK-made car costs £20,000 and the exchange rate is £1 = €1.15, the euro price is €23,000. If the rate moves to £1 = €1.25, the new price is € e price effect clearly, which can be discussed alongside elasticity of demand for exports.
计算可能涉及价格转换：如果一辆英国制造的汽车售价 20000 英镑，汇率为 1 英镑 = 1.15 欧元，那么欧元价格为 23000 欧元。如果汇率变为 1 英镑 = 1.25 欧元，新价格则为 25000 欧元。这清楚地显示了价格效应，可以结合出口的需求弹性进行讨论。
11. Essay Structure and Evaluation Skills | 议论文结构与评估技巧
A high-scoring 12-mark essay requires a clear structure: define key terms in the introduction, present two or three well-developed analytical paragraphs using diagrams and/or data, and finish with a balanced evaluation. Evaluative phrases such as 'however, it depends on...', 'in the long run vs short run', and 'the extent of the effect depends on the elasticity...' show higher-order thinking.
一篇高分的 12 分议论文需要清晰的结构：在引言中定义关键术语，写出两到三个充分展开并使用图表和/或数据的分析性段落，最后以平衡的评估结束。评估性短语如“然而，这取决于……”、“长期与短期相比”、“影响的程度取决于弹性……”展示了高阶思维能力。
Common topics for evaluation include the effectiveness of government policies (taxes vs subsidies vs regulation), the significance of different elasticities, and the unintended consequences of interventions. Always relate back to the question and avoid one-sided arguments. A conclusion should weigh up evidence and reach a reasoned judgement, even if brief.
评估部分的常见主题包括政府政策的有效性（税收 vs 补贴 vs 规制）、不同弹性的重要性，以及干预措施带来的意外后果。始终要回扣题目，避免片面的论证。结论应权衡证据并得出有理由的判断，即使简短亦可。
Remember to use the PED formula accurately when supporting your argument. For example, 'If the demand for cigarettes is inelastic (PED < 1), an increase in tax will reduce quantity by a smaller proportion and raise government revenue.' This kind of precise application lifts a response from level 2 to level 3.
记住在支撑你的论点时准确使用 PED 公式。例如，“如果对香烟的需求缺乏弹性（PED < 1），增税将按较小比例减少数量，并增加政府税收。”这种精确的应用可以将答案从第二等级提升到第三等级。
12. Final Tips and Exam Technique | 最后的提示与应试技巧
Before the exam, revise the key diagrams: demand and supply shifts, externalities (with MSC and MSB), maximum/minimum prices, taxation incidence, and exchange rate determination. Be ready to label them fully and use the correct terminology. Practise writing definitions under timed conditions to ensure they are concise and accurate.
考试前，复习关键图表：需求与供给的移动、外部性（带 MSC 和 MSB）、最高/最低限价、税收归宿以及汇率的决定。做好充分标注图表并准确使用术语的准备。在计时条件下练习撰写定义，确保它们简洁准确。
During the test, read the data response extracts carefully; key information is often hidden in the text or table. Use the extract labels (e.g., 'Figure 1 shows...') in your answer to demonstrate analysis. For multiple-choice, eliminate obvious distractors and watch out for words like 'always' or 'never', which are rarely correct in economics.
在测试中，要仔细阅读数据分析题的材料；关键信息往往隐藏在文本或表格中。在答案中使用材料标签（例如，“图1显示……”）来展示分析能力。对于选择题，排除明显干扰项，并注意像“总是”或“决不”这类词，它们在经济学中很少是正确的。
Finally, manage your time. Allocate roughly one minute per mark. Leave five minutes at the end to check calculations and ensure you have answered all parts of a question. This mock walkthrough is designed to refine your technique, not just your knowledge. Good luck!
最后，管理好你的时间。大致按每分分配一分钟的原则执行。最后留出五分钟检查计算并确保回答了题目的所有部分。本次模拟卷解析不仅旨在完善你的知识，更为了精进你的应试技巧。祝你好运！
Published by TutorHao | Economics Revision Series | aleveler.com
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