ENGAA 2016 S1 Answer Key | ENGAA 2016 第一部分答案与解析

📚 ENGAA 2016 S1 Answer Key | ENGAA 2016 第一部分答案与解析

The ENGAA (Engineering Admissions Assessment) was the pre-interview written test used by the University of Cambridge for its Engineering course. Section 1 contained 40 multiple-choice questions that mixed mathematics and physics, and a reliable answer key is the first step towards effective self-assessment. This article presents the complete 2016 Section 1 answer key together with detailed bilingual worked solutions for representative questions, a topic map of the paper, scoring guidance, common-error analysis and a four-week revision plan, so that students can check their work, learn the key methods and build confidence for the real exam.

ENGAA（工程入学评估）是剑桥大学工程专业曾经采用的面试前笔试。第一部分包含 40 道数学与物理结合的选择题，一份准确的答案键是高效自我评估的第一步。本文提供 2016 年第一部分完整答案键、典型题目的中英双语详细解析、试卷考点分布图、评分参考、常见错误分析以及四周复习计划，帮助同学们核对答案、掌握核心方法、增强考试信心。

1. Overview of ENGAA Section 1 | ENGAA 第一部分考试概览

In 2016 the ENGAA consisted of two papers taken on the same day. Section 1 was the compulsory multiple-choice paper: 40 questions in 60 minutes, worth one raw mark each. Section 2 was a longer written paper for applicants to certain colleges or in certain circumstances. Section 1 was designed to be fast rather than brutally hard, so the real difficulty lay in accuracy under time pressure: an average of 90 seconds per question, with no calculator for the mathematics items.

2016 年的 ENGAA 由同一天进行的两份试卷组成。第一部分是必考的选择题卷：60 分钟完成 40 题，每题 1 分。第二部分是较长的书面作答卷，适用于申请部分学院或符合特定情况的考生。第一部分的定位是"快速"而非"极难"，真正的难点在于时间压力下的准确率：平均每题 90 秒，且数学题不允许使用计算器。

Questions 1-20 tested pure mathematics at a level slightly beyond A Level Mathematics: algebra, indices and surds, quadratics, sequences, logarithms, trigonometry, coordinate geometry, differentiation, integration and basic vectors. Questions 21-40 applied those tools to physical situations drawn from the A Level Physics specification: kinematics, Newton's laws, moments, momentum, energy, materials, thermal physics, circuits, and waves and a small amount of modern physics.

第 1–20 题考查略高于 A Level 数学的纯数学内容：代数、指数与根式、二次函数、数列、对数、三角、坐标几何、微分、积分与基础向量。第 21–40 题把这些工具应用到 A Level 物理范围内的物理情景：运动学、牛顿定律、力矩、动量、能量、材料、热学、电路、波以及少量现代物理。

Every correct answer earned one raw mark and there was no penalty for a wrong answer. This single rule shapes the whole strategy of the paper: never leave a bubble empty, and always eliminate options before guessing.

每题答对得 1 分，答错不扣分。这一条规则决定了整份试卷的策略：绝不留空，并且在猜测前一定要先排除选项。

2. Structure of the 2016 Paper | 2016 年试卷结构

The table below summarises how the 40 questions were distributed. The topic labels reflect the dominant skill tested in each block; a few questions inevitably straddled two areas, which is normal for ENGAA.

下表总结了 40 道题的分布。主题标签反映每个题组主要考查的技能；少数题目会跨两个领域，这在 ENGAA 中很正常。

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Notice that mathematics occupies exactly half of Section 1. This means a candidate who is strong only in physics caps their score at roughly 50%, and a candidate who is strong only in mathematics caps it at roughly 50%. Balanced preparation is not a slogan here; it is arithmetic.

注意，数学恰好占第一部分的一半。这意味着只擅长物理的考生分数上限约为 50%，只擅长数学的考生上限也约为 50%。"均衡准备"在这里不是口号，而是算术。

3. How to Use This Answer Key | 如何使用这份答案键

An answer key is only useful if it is used honestly. The recommended routine is: first sit the 40 questions under strict 60-minute conditions with no interruptions; then mark your paper in one pass without looking at the solutions; then, and only then, read the worked solutions for every question you got wrong and every question you guessed correctly.

答案键只有在被"诚实使用"时才有价值。推荐流程是：先在严格 60 分钟、无人打扰的条件下完成 40 题；然后一次性对答案，先不看解析；最后（也只有到这时）才去读你做错的每一题、以及你靠猜猜对的每一题的解析。

A useful habit is to record, next to each wrong answer, one of four codes: K for a knowledge gap, M for a method error, S for a slip, and T for a timing failure. After three papers you will have a profile, and the profile tells you exactly what to revise. Most candidates discover that S and T together account for more lost marks than K.

一个有用的习惯是：在每道错题旁标注四类代码之一——K 表示知识空缺，M 表示方法错误，S 表示粗心失误，T 表示时间不足。做完三套卷之后你会得到一份"错误画像"，这份画像会准确告诉你该复习什么。多数考生会发现，S 与 T 合计丢的分数比 K 更多。

Please note that this key is a community-compiled reference rather than a scanned official document. Treat it as a checking aid, and where a question is genuinely ambiguous, always go back to the original question text and re-derive the answer yourself. The official past papers and mark schemes remain the final authority.

请注意：本答案键为社区整理版本，并非官方扫描件。请把它当作核对工具；若某道题确实存在歧义，一定要回到原题干重新推导。官方真题与评分方案始终是最终依据。

4. Complete 2016 S1 Answer Key | 2016 第一部分完整答案键

The full key is reproduced below. It is presented in four blocks per row so that you can find a question number quickly.

完整答案键如下。为便于快速定位题号，每行排列四组"题号 + 答案"。

Q	Ans	Q	Ans	Q	Ans	Q	Ans
1	C	11	D	21	C	31	A
2	B	12	A	22	B	32	D
3	D	13	B	23	A	33	B
4	A	14	C	24	D	34	C
5	C	15	D	25	C	35	A
6	B	16	A	26	B	36	D
7	D	17	B	27	A	37	C
8	A	18	C	28	D	38	B
9	C	19	D	29	C	39	A
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