IGCSE Edexcel Economics: Detailed Analysis of Typical Exam Questions | IGCSE Edexcel 经济典型例题详解

📚 IGCSE Edexcel Economics: Detailed Analysis of Typical Exam Questions | IGCSE Edexcel 经济典型例题详解

IGCSE Edexcel Economics students often find it challenging to apply theoretical knowledge to exam-style questions. This article presents a selection of typical exam questions across micro and macro topics, with step-by-step explanations that mirror the marking expectations. By working through these examples, you will sharpen your analytical skills and improve your ability to score high marks in both structured questions and data response sections.

IGCSE Edexcel 经济学生常觉得将理论知识应用到考题中有难度。本文精选了微观和宏观主题中的典型试题，提供符合阅卷要求的逐步解析。通过这些例题，你将提升分析能力，在结构化问题和数据分析题中取得高分。

1. Shifts in Demand and Equilibrium | 需求变动与均衡

A typical 4-mark question: ‘The market for coffee is in equilibrium. Consumer incomes rise, and coffee is a normal good. Explain the effect on the equilibrium price and quantity of coffee.’

典型4分题：“咖啡市场处于均衡。消费者收入上升，咖啡为正常品。解释对咖啡均衡价格和数量的影响。”

When consumer income increases, the demand for coffee shifts to the right from D1 to D2. The new equilibrium occurs at a higher price P2 and a higher quantity Q2 compared to the original equilibrium. The supply curve remains unchanged. The increase in demand creates excess demand at the original price, bidding the price up until a new equilibrium is reached.

当消费者收入增加，咖啡需求从 D1 右移至 D2。与初始均衡相比，新均衡位于更高的价格 P2 和更高的数量 Q2。供给曲线不变。需求增加在原价格下造成超额需求，促使价格上升，直至达到新均衡。

In a diagram, clearly label the axes (Price, Quantity), the original and new demand curves, and show the change in equilibrium with arrows. Marks are awarded for correct shifts and identification of new P and Q.

在图中，清晰标明坐标轴（价格、数量）、原需求曲线和新需求曲线，并用箭头展示均衡变动。正确移动和标识新价格与数量即可得分。

2. Shifts in Supply and Equilibrium | 供给变动与均衡

Question: ‘Due to favourable weather, there is a bumper wheat harvest. Explain how this affects the equilibrium price and quantity in the wheat market.’

题目：“由于天气有利，小麦大丰收。解释这将如何影响小麦市场的均衡价格和数量。”

A bumper harvest increases the supply of wheat, shifting the supply curve to the right from S1 to S2. Demand remains unchanged. The new equilibrium has a lower price and a higher quantity. The surplus at the original price forces the price down until the market clears.

大丰收使小麦供给增加，供给曲线从 S1 右移至 S2。需求不变。新均衡价格更低，数量更大。原价格下的过剩迫使价格下降，直至市场出清。

Diagrams should show the rightward supply shift and clearly indicate the fall in price and rise in quantity.

图示应展示供给曲线右移，并清楚标示价格下降和数量增加。

3. Calculating Price Elasticity of Demand (PED) | 需求价格弹性计算

Question: ‘A firm raises the price of its product from $10 to $12. As a result, quantity demanded falls from 200 units to 160 units. Calculate the price elasticity of demand (PED) and comment on the nature of the elasticity.’

题目：“某公司将产品价格从 10 美元上调至 12 美元，需求量从 200 单位降至 160 单位。计算需求价格弹性 (PED) 并评价弹性类型。”

PED is calculated as the percentage change in quantity demanded divided by the percentage change in price.

PED 等于需求量变动百分比除以价格变动百分比。

PED = %ΔQD ÷ %ΔP

%ΔQD = ((160 − 200) ÷ 200) × 100% = −20%

%ΔQD = ((160 − 200) ÷ 200) × 100% = −20%

%ΔP = ((12 − 10) ÷ 10) × 100% = 20%

%ΔP = ((12 − 10) ÷ 10) × 100% = 20%

Therefore, PED = −20% ÷ 20% = −1

因此，PED = −20% ÷ 20% = −1

The PED value is −1; ignoring the

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