A-Level AQA Economics: Last-Minute Revision Notes | A-Level AQA 经济：考前冲刺笔记

📚 A-Level AQA Economics: Last-Minute Revision Notes | A-Level AQA 经济：考前冲刺笔记

This last-minute revision guide distils the AQA A-Level Economics syllabus into bite-sized, exam-focused notes. It covers key micro and macro topics, definitions, diagrams, formulas, and evaluation points to help you consolidate your knowledge quickly before the exam.

本考前冲刺笔记将AQA A-Level经济学考纲浓缩为考点精华，涵盖微观与宏观的核心主题、定义、图表、公式和评估点，帮助你快速巩固知识，迎战考试。

1. The Economic Problem and PPC | 经济问题与生产可能性曲线

The basic economic problem is scarcity: finite resources and infinite wants. This forces choices about what, how, and for whom to produce.

基本经济问题是稀缺性：资源有限但欲望无限，这迫使社会就生产什么、如何生产和为谁生产做出选择。

Opportunity cost is the value of the next best alternative forgone when a choice is made. All decisions involve trade-offs.

机会成本是做出选择时所放弃的次优选择的价值。所有决策都涉及权衡取舍。

A Production Possibility Curve (PPC) shows the maximum output combinations of two goods given existing resources and technology. Points on the curve are efficient; inside are inefficient.

生产可能性曲线（PPC）展示在给定资源和技术下两种商品的最大产出组合。曲线上各点代表有效率，内部各点代表无效率。

An outward shift of the PPC represents economic growth caused by increased resources or better technology. A shift inward could result from natural disasters or war.

PPC向外移动表示经济增长，原因可能是资源增加或技术进步。向内移动可能源于自然灾害或战争。

Evaluation: PPC assumes only two goods, fixed resources, and full employment, which oversimplifies real economies. Nonetheless, it usefully illustrates opportunity cost and growth.

评估：PPC假设只有两种商品、资源固定且充分就业，这过度简化了现实经济。但它在阐释机会成本和经济增长方面仍很有用。

2. Demand, Supply and Price Determination | 需求、供给与价格决定

The law of demand states that as price falls, quantity demanded rises, ceteris paribus. The demand curve slopes downwards.

需求定律指出，在其他条件不变下，价格下降则需求量增加，需求曲线向下倾斜。

Factors shifting demand include changes in income, tastes, prices of substitutes/complements, and population. A rightward shift means higher demand at every price.

导致需求移动的因素包括收入、偏好、替代品/互补品价格和人口变化。曲线右移表示每个价格水平下需求增加。

The law of supply: as price rises, quantity supplied rises. The upward-sloping supply curve reflects profit incentive.

供给定律：价格上升，供给量增加。向上倾斜的供给曲线反映了利润激励。

Published by TutorHao | A-Level Economics Revision Series | aleveler.com

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