Year 7 AQA Economics: Unit Test Mock Paper Walkthrough | 七年级 AQA 经济：单元测试模拟卷解析

📚 Year 7 AQA Economics: Unit Test Mock Paper Walkthrough | 七年级 AQA 经济：单元测试模拟卷解析

This article provides a step-by-step walkthrough of a mock unit test for Year 7 AQA Economics, covering fundamental concepts such as scarcity, opportunity cost, supply and demand, and the basic functions of money. Each question is explained in detail to help you understand not just the correct answer, but the reasoning behind it. Use this as a revision tool to check your understanding and identify any areas that need more practice.

本文将对一份七年级 AQA 经济单元测试模拟卷进行逐步解析，涵盖稀缺性、机会成本、供给与需求以及货币的基本功能等核心概念。每道题目都配有详细的解析，不仅告诉你正确答案，更帮助你理解其中的逻辑。你可以将本文作为复习工具，检验自己对知识的掌握情况，并找出需要加强练习的部分。

1. Understanding Scarcity | 理解稀缺性

Question: What is the fundamental economic problem faced by all societies?
A. Unlimited resources
B. Limited wants
C. Scarcity
D. Overproduction

题目：所有社会面临的基本经济问题是什么？
A. 无限的资源
B. 有限的需求
C. 稀缺性
D. 生产过剩

The correct answer is C, Scarcity. Economics exists because resources such as land, labour, and raw materials are limited, while human wants are virtually unlimited. This mismatch forces individuals and societies to make choices about how to allocate resources efficiently. Options A and B are incorrect because resources are not unlimited and wants are not limited. Overproduction is a specific situation in a market, not the basic economic problem.

正确答案是 C，稀缺性。经济学之所以存在，是因为土地、劳动力和原材料等资源是有限的，而人类的欲望几乎是无限的。这种不匹配迫使个人和社会就如何有效分配资源做出选择。选项 A 和 B 是错误的，因为资源并非无限，欲望也不是有限的。生产过剩是市场中的一种具体情况，而非基本的经济问题。

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2. Opportunity Cost in Everyday Decisions | 日常决策中的机会成本

Question: You have £20. You can either buy a new video game or a pair of trainers. If you choose the video game, what is the opportunity cost?

题目：你有 20 英镑。你可以买一款新电子游戏或一双运动鞋。如果你选择了电子游戏，机会成本是什么？

The opportunity cost is the next best alternative you give up – in this case, the pair of trainers. Opportunity cost is not about the money spent, but the value of the best forgone option. Even if you later find that the trainers were worth more to you, the cost remains the loss of that alternative at the moment of decision. This concept helps individuals and businesses weigh trade-offs.

机会成本是你所放弃的次优选择——在这个例子中就是那双运动鞋。机会成本与你花掉的钱无关，而是指被放弃的最佳选项的价值。即使你后来发现运动鞋对你更有价值，成本仍然是你在做出决定那一刻所失去的那个替代选择。这个概念有助于个人和企业权衡取舍。

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3. The Four Factors of Production | 四种生产要素

Question: List the four factors of production and give one example of each.

题目：列出四项生产要素，并为每一项举一个例子。

The four factors are: Land (natural resources like oil, forests, or water), Labour (human effort, e.g. a teacher or a builder), Capital (man-made tools and machinery, e.g. a computer or a tractor), and Enterprise (the willingness to take risks and organise the other three factors, e.g. an entrepreneur starting a new business). These inputs are combined to produce goods and services in every economy.

四项要素分别为：土地（如石油、森林或水等自然资源）、劳动力（人的努力，例如教师或建筑工人）、资本（人造工具和机器，如电脑或拖拉机）以及企业家精神（承担风险并组织其他三项要素的意愿，例如创业的企业家）。在任何经济体中，这些投入被组合起来生产商品和服务。

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4. Demand, Supply, and Market Equilibrium | 需求、供给与市场均衡

Question: The table below shows the demand and supply for concert tickets at different prices. What is the equilibrium price?

题目：下表显示了不同价格下演唱会门票的需求量和供给量。均衡价格是多少？

Price per ticket (P)	Quantity Demanded	Quantity Supplied
£10	500	200
£20	400	300
£30	300	300
£40	200	400
£50	100	500

The equilibrium price is £30, where the quantity demanded equals the quantity supplied (300 tickets). At any other price, there is either a shortage or a surplus. For example, at £10, demand far exceeds supply, creating upward pressure on the price. At £40, there is a surplus, pushing the price down. Markets naturally move toward equilibrium when they are left to operate freely.

均衡价格为 30 英镑，此时需求量等于供给量（300 张门票）。在其他任何价格下，要么出现短缺，要么出现过剩。例如，在 10 英镑时，需求量远远超过供给量，产生价格上涨的压力。在 40 英镑时会出现过剩，从而压低价格。当市场自由运行时，它会自然地趋向均衡。

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5. The Law of Demand | 需求定律

Question: According to the law of demand, what happens to the quantity demanded of a normal good as its price increases, all other things being equal?

题目：根据需求定律，在其他条件不变的情况下，当一种正常商品的价格上升，其需求量会如何变化？

The quantity demanded decreases. The law of demand states that there is an inverse relationship between price and quantity demanded. When a good becomes more expensive, consumers tend to buy less of it, either because they switch to cheaper substitutes or because their real income effectively falls. This is represented by a downward-sloping demand curve on a graph.

需求量会减少。需求定律指出价格与需求量之间存在反向关系。当商品变得更贵时，消费者往往会减少购买，这要么是因为他们转向更便宜的替代品，要么是因为他们的实际收入实际上下降了。这在图形上表现为一条向下倾斜的需求曲线。

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6. The Law of Supply | 供给定律

Question: A strawberry farmer notices that the market price of strawberries has fallen. According to the law of supply, how will the farmer likely respond in terms of the quantity supplied?

题目：一位草莓种植者发现草莓的市场价格下跌了。根据供给定律，该种植者可能会在供给量上做出怎样的反应？

The farmer will likely reduce the quantity supplied. The law of supply states that there is a direct relationship between price and quantity supplied. Lower prices mean lower potential profit, so producers are less willing to offer as much for sale. In the short run, the farmer might even leave some strawberries unharvested. This behaviour is shown by an upward-sloping supply curve.

种植者很可能会减少供给量。供给定律指出价格与供给量之间存在直接关系。较低的价格意味着潜在利润减少，因此生产者的销售意愿降低。在短期内，种植者甚至可能选择不采摘部分草莓。这种行为由一条向上倾斜的供给曲线表示。

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7. Types of Economic Systems | 经济体系的类型

Question: Which type of economic system relies primarily on customs, traditions, and barter to answer the three basic economic questions?

题目：哪种经济体系主要依赖习俗、传统和以物易物来回答三个基本经济问题？

This describes a traditional economy. In a traditional system, roles and production methods are passed down from generation to generation. The questions of what, how, and for whom to produce are answered by long-standing habits. This contrasts with a market economy (where decisions are driven by price signals) and a planned or command economy (where the government makes all major decisions).

这描述的是传统经济。在传统体系中，角色和生产方法代代相传。生产什么、如何生产以及为谁生产的问题由长期的习惯来回答。这与市场经济（由价格信号驱动决策）以及计划或指令经济（由政府做出所有重大决策）形成了对比。

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8. Functions of Money | 货币的职能

Question: Which of the following is a primary function of money?
A. A factor of production
B. A unit of account
C. A determinant of supply
D. A type of natural resource

题目：以下哪一项是货币的主要职能？
A. 一种生产要素
B. 一种记帐单位
C. 一个供给的决定因素
D. 一种自然资源

The correct answer is B, a unit of account. The four classic functions of money are: medium of exchange, store of value, unit of account, and standard of deferred payment. As a unit of account, money allows people to compare the value of different goods and services using a common measure. The other options are not recognised functions of money.

正确答案是 B，一种记帐单位。货币的四种经典职能是：交换媒介、价值储藏、记帐单位和延期支付标准。作为记帐单位，货币使人们能够使用统一的尺度来比较不同商品和服务的价值。其他选项并不是公认的货币职能。

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9. Why Budgets Matter | 预算为何重要

Question: Explain what a budget is and why individuals and governments use them.

题目：解释什么是预算，以及个人和政府为什么要使用预算。

A budget is a financial plan that outlines expected income and expenditure over a period of time. Individuals use budgets to ensure they do not overspend, to save for future goals, and to manage debt responsibly. Governments use budgets to plan public spending on services like education and healthcare, to collect taxes efficiently, and to influence the overall economy. Without a budget, both households and states risk running into financial instability.

预算是一份财务计划，概述了在一段时间内的预期收入和支出。个人使用预算是为了确保不超支、为未来目标储蓄以及负责任地管理债务。政府使用预算则是为了规划教育、医疗等公共服务的支出，高效地征收税款，以及影响整体经济。没有预算，家庭和国家都面临陷入财务不稳定的风险。

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10. Introduction to Price Elasticity of Demand | 需求的价格弹性入门

Question: A cinema reduces its ticket price by 10%, and the quantity demanded increases by only 2%. Would you describe the demand for cinema tickets as elastic or inelastic? Why?

题目：一家电影院将票价降低了 10%，结果需求量仅增加了 2%。你会将电影票的需求描述为富有弹性还是缺乏弹性？为什么？

Demand is inelastic. Price elasticity of demand measures how responsive quantity demanded is to a change in price. When the percentage change in quantity demanded is less than the percentage change in price, it is said to be inelastic. Here, the small increase in attendance despite a relatively large price cut suggests that consumers are not very sensitive to price changes – perhaps because they are loyal to the cinema or there are few alternatives nearby.

需求是缺乏弹性的。需求的价格弹性衡量的是需求量对价格变动的反应程度。当需求量变动的百分比小于价格变动的百分比时，就称为缺乏弹性。在这个例子中，尽管降价幅度较大，但上座率仅小幅增加，这表明消费者对价格变化不太敏感——也许是因为他们对这家电影院很忠诚，或者附近没有太多替代选择。

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11. Interpreting a Simple Production Possibility Frontier | 解读简单的生产可能性边界

Question: Country X can produce either 100 units of food or 50 units of clothing. Draw a basic Production Possibility Frontier (PPF) and label a point that represents an inefficient use of resources.

题目：X 国可以生产 100 单位食品或 50 单位服装。画出一条基本的生产可能性边界（PPF），并标出一个代表资源利用效率低下的点。

While you will need to draw the graph in an exam, the key principle is that the PPF shows the maximum possible output combinations given existing resources and technology. Any point inside the curve (e.g. 40 food and 20 clothing) is inefficient, because the country could produce more of one good without sacrificing the other. Points on the curve are efficient, and points outside are currently unattainable. The PPF illustrates scarcity, choice, and opportunity cost clearly.

虽然考试中你需要亲自绘制图形，但关键原理在于，PPF 展示了在既定的资源和技术条件下最大可能的产出组合。曲线内的任何一点（例如 40 单位食品和 20 单位服装）都是低效率的，因为该国可以在不牺牲另一种商品的情况下生产更多的其中一种。曲线上的点是有效率的，而曲线外的点目前是无法达到的。PPF 清晰地展示了稀缺性、选择和机会成本。

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12. Review and Exam Tips | 复习与考试技巧

As you prepare for your unit test, remember to read each question carefully, paying attention to command words such as 'explain', 'list', or 'calculate'. Use clear economic terminology and, where possible, support your answers with real-world examples or simple diagrams. Time management is crucial – don't spend too long on any single question. Practise with past papers and this mock walkthrough to build confidence.

在为单元测试做准备时，请记住要仔细阅读每道题目，注意题目中的指令词，如“解释”、“列出”或“计算”。使用清晰的经济学术语，并尽可能用现实世界的例子或简单的图表来支撑你的答案。时间管理至关重要——不要在某一题上花费过长时间。通过练习历年真题和本篇模拟卷解析来建立自信。

Published by TutorHao | Economics Revision Series | aleveler.com

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