Cambridge IGCSE · 分析与预测
2023 Cambridge IGCSE Sciences - Co-ordinated (Double) (0654) 历年真题分析与预测
This examination paper covers Core and Extended Co-ordinated Sciences across Biology, Chemistry, and Physics, featuring structured theoretical questions, multiple-choice items, and experimental planning tasks.
更新: 2026年6月13日
分析模拟试题
难度 3.5/5
总分
220
时间
255 分钟
最高频考点
—
分卷
卷二 選擇題 (Extended): 40 分 · 45 分钟Paper 4 Theory (Extended): 120 分 · 120 分钟Paper 6 Alternative to Practical: 60 分 · 90 分钟
考官重点
官方报告整理常见失分点
- Failing to convert units (such as grams to kilograms, or minutes to seconds) in multi-step physics and chemistry formulas.
- Describing graph features in detail when the question specifically asks candidates to explain them biologically.
- Omitting key terms in rate of reaction questions, such as writing 'more collisions' rather than 'more frequent collisions'.
常见误区
- Assuming that light intensity changes the speed of current inside a light-dependent resistor (LDR) rather than the overall resistance of the component.
- Confusing the site of vasodilation/vasoconstriction as capillaries rather than arterioles within skin structure.
- Believing that a parallel resistor combination increases total resistance rather than reducing it.
失分原因
- Failing to balance ionic half-equations for processes like aluminium extraction or copper electrolysis.
- Neglecting to show complete working steps in multi-step stoichiometry calculations, missing out on crucial error-carried-forward (ecf) marks.
- Stating incorrect units or omitting units entirely for calculations like gravitational field strength and charge.
等级分数线估算
更新: 2026年6月13日
| 等级 | 分数 | 百分比 |
|---|---|---|
| A* | 170/240 | 71% |
| A | 141/240 | 59% |
| B | 112/240 | 47% |
| C | 84/240 | 35% |
| D | 72/240 | 30% |
| E | 60/240 | 25% |
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).
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