Cambridge IGCSE · 分析与预测
2025 Cambridge IGCSE Science - Combined (0653) 历年真题分析与预测
A comprehensive assessment of the October/November 2025 examination series for IGCSE Combined Science (0653). This analysis covers Papers 12, 22, 32, 42, 52, and 62, detailing the distribution of marks across Biology, Chemistry, and Physics. It provides a syllabus-aligned breakdown, highlights student performance issues highlighted by the examiner reports, and offers strategic preparation pathways for upcoming sessions.
更新: 2026年6月13日
分析模拟试题
难度 3.2/5
总分
160
时间
180 分钟
最高频考点
—
分卷
卷二: 選擇題 (Extended): 40 分 · 45 分钟Paper 4: Theory (Extended): 80 分 · 75 分钟Paper 6: Alternative to Practical: 40 分 · 60 分钟
考官重点
官方报告整理常见失分点
- Failure to perform unit conversions: Candidates do not convert mass in grams to kilograms when calculating gravitational potential energy.
- Misinterpreting command words: Answering 'State' with overly long, convoluted paragraphs while failing to write precise definitions.
- Unprecise scientific vocabulary: Using general terminology like 'particles vibrating and moving' without mentioning collision frequency in enzyme reactions.
常见误区
- Believing that heat energy transfers through space via conduction or convection; ignoring the requirement of a material medium.
- Assuming a captive breeding programme only serves to house endangered animals, without referencing reproduction and reintroduction strategies.
失分原因
- Incorrect stoichiometry when balancing the chemical equation of photosynthesis.
- Failing to subtract the blank mass when determining the net density of a measured liquid.
- Neglecting to draw the correct double bond pattern for outer shell electrons in covalent dot-and-cross CO2 diagrams.
等级分数线估算
更新: 2026年6月13日
| 等级 | 分数 | 百分比 |
|---|---|---|
| A* | 151/200 | 76% |
| A | 125/200 | 63% |
| B | 99/200 | 50% |
| C | 74/200 | 37% |
| D | 64/200 | 32% |
| E | 54/200 | 27% |
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).
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