Year 7 Cambridge Economics: Key Topics and Common Mistakes Analysis | Year 7 Cambridge 经济：高频考点与易错题分析

📚 Year 7 Cambridge Economics: Key Topics and Common Mistakes Analysis | Year 7 Cambridge 经济：高频考点与易错题分析

Welcome to your essential revision guide for Year 7 Cambridge Economics. This article focuses on the most frequently examined topics and the pitfalls that many students fall into. By mastering these concepts and understanding where mistakes commonly occur, you can boost your confidence and improve your exam performance significantly.

欢迎阅读 Year 7 剑桥经济学的核心复习指南。本文聚焦于最高频的考试主题以及许多学生容易陷入的误区。通过掌握这些概念并了解常见的错误出处，你可以大大增强信心，显著提高考试成绩。

1. Scarcity and the Basic Economic Problem | 稀缺性与基本经济问题

The fundamental economic problem is scarcity: unlimited wants versus limited resources. Because resources such as time, money, and raw materials are finite, we must make choices. Scarcity exists everywhere, for everyone, regardless of income.

根本的经济问题是稀缺性：无限的需求与有限的资源。由于时间、金钱和原材料等资源是有限的，我们必须做出选择。稀缺性普遍存在，不分贫富，每个人都会面对。

Common misconception: Students often confuse scarcity with poverty. Scarcity is universal; poverty refers to a lack of sufficient income to meet basic needs. A billionaire faces scarcity of time, but not poverty. Another mistake is thinking that free goods like air are scarce; air is abundant and not scarce, but clean air can be scarce.

常见误解：学生常把稀缺性与贫穷混为一谈。稀缺性是普遍的；贫穷是指没有足够的收入来满足基本需求。亿万富翁面临时间的稀缺，但不贫穷。另一个错误是认为所有物品包括空气都是稀缺的；空气是丰裕的，不是稀缺的，但洁净的空气可以是稀缺的。

Exam tip: Always identify the limited resource and the choice made in exam questions. Use the terms ‘scarcity’ and ‘choice’ together.

应试技巧：在考题中始终要指出有限的资源和做出的选择，并将“稀缺性”和“选择”两个词一起使用。

2. Opportunity Cost | 机会成本

Opportunity cost is the next best alternative foregone when a choice is made. It

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