📚 UK University Entry Requirements vs CIE Computer Science Curriculum | 英国大学申请要求与CIE计算机课程对照
Starting to think about university applications during Year 11 might feel early, but for students aiming at competitive UK computer science degrees, understanding the entry requirements early gives you a crucial head start. The CIE Computer Science (IGCSE) curriculum provides foundational knowledge in programming, algorithms, and computer systems. However, when it comes to university admissions, the expectations often extend beyond the syllabus – with a heavy emphasis on strong mathematical ability, super-curricular exploration, and evidence of logical problem-solving skills. This guide compares typical UK university entrance requirements with the CIE Computer Science curriculum to help Year 11 students plan their A-Level choices, extracurricular activities, and summer preparation strategically.
在11年级就开始考虑大学申请可能感觉为时过早，但对于目标是英国顶尖计算机科学专业的学生来说，尽早了解入学要求可以让你获得关键的先发优势。CIE计算机科学（IGCSE）课程提供了编程、算法和计算机系统的基础知识。然而，在大学录取方面，期望往往超出了课程大纲——非常强调扎实的数学能力、课外学术探索以及逻辑问题解决能力的证据。本指南将典型的英国大学入学要求与CIE计算机科学课程进行对比，帮助11年级学生有策略地规划A-Level选科、课外活动和暑期准备。
1. The UCAS Application System Overview | UCAS申请系统概览
All undergraduate applications to UK universities are submitted through the Universities and Colleges Admissions Service (UCAS). You can apply to up to five courses, and your application will include predicted A-Level grades, a personal statement, a reference from your school, and sometimes admission test scores. For computer science, it is vital to know that the competition is fierce – many courses have a high ratio of applicants to places, so meeting the minimum entry requirements does not guarantee an offer. Strong GCSE/IGCSE results, including in CIE Computer Science, form part of the academic record that universities will scrutinise.
所有英国大学本科申请均通过大学和学院招生服务中心（UCAS）提交。你可以申请最多五个专业课程，申请材料包括A-Level预估成绩、个人陈述、学校推荐信，有时还需提供入学考试成绩。对于计算机科学专业，竞争非常激烈——许多课程报录比极高，因此仅满足最低入学要求并不能保证录取。包括CIE计算机科学在内的扎实GCSE/IGCSE成绩是大学会仔细审查的学术记录的一部分。
Your UCAS application timeline typically starts in Year 12, but Year 11 is the perfect time to research course requirements and align your A-Level subject choices. Many universities list not just required subjects but also 'preferred' or 'useful' subjects. For computer science applicants, mathematics is almost always required, and Further Mathematics is often highly recommended. Understanding this early allows you to select the right combination before starting sixth form.
你的UCAS申请时间线通常从12年级开始，但11年级是研究课程要求并调整A-Level选科的绝佳时机。许多大学不仅列出必修科目，还列出‘优先’或‘有用’的科目。对于计算机科学申请者，数学几乎总是必修科，而进阶数学经常被强烈推荐。尽早理解这一点，能让你在开始sixth form前就选择正确的科目组合。
2. Typical Entry Requirements for Computer Science Degrees | 计算机科学学位的典型入学要求
A typical offer for computer science at a Russell Group university ranges from A*AA to AAB at A-Level. The most competitive institutions – such as Imperial College London, University College London (UCL), and the University of Warwick – often set requirements of A*A*A or A*AA, with the A* in Mathematics. Lower-tariff universities may offer AAB–ABB, but even these will usually insist on an A in Mathematics. Only a very small number of courses accept applicants without A-Level Mathematics, and those are often combined with other disciplines or have lower entry standards.
罗素集团大学计算机科学专业的典型录取条件在A-Level A*AA到AAB之间。最具竞争力的院校——如帝国理工学院、伦敦大学学院（UCL）和华威大学——常把录取标准设为A*A*A或A*AA，且要求数学成绩为A*。录取门槛稍低的大学可能提供AAB–ABB的条件，但即便如此也通常坚持数学要达到A。只有极少数专业接受没有A-Level数学的申请者，这些专业往往与其他学科结合，或者录取标准较低。
Some universities also specify a science subject alongside Mathematics. Physics, Chemistry, and Computer Science at A-Level are commonly accepted as the second or third subject. For the CIE IGCSE student, this is relevant because the skills acquired in CIE Computer Science – problem decomposition, algorithmic thinking, and programming – directly support the study of A-Level Computer Science and demonstrate an early aptitude.
一些大学还会要求除数学外再修一门科学科目。物理、化学和A-Level计算机科学通常被接受为第二或第三门科目。对于CIE IGCSE学生而言，这一点很重要，因为从CIE计算机科学中获得的技能——问题分解、算法思维和编程——直接支持A-Level计算机科学的学习，并展现出早期的学科潜力。
3. The Role of Mathematics in Computer Science Applications | 数学在计算机科学申请中的作用
Mathematics is the single most important subject for computer science applications. Even if a university does not explicitly require A-Level Computer Science, they almost always require A-Level Mathematics at a high grade. The logic and abstraction present in pure mathematics – such as proof, set theory, and algebraic manipulation – mirror the reasoning needed in algorithm design, theory of computation, and complexity analysis. For CIE IGCSE students, excelling in Cambridge IGCSE Mathematics (0580) or Additional Mathematics (0606) is the first step toward building this mathematical profile.
数学是计算机科学申请中最重要的单一科目。即使某所大学没有明确要求A-Level计算机科学，也几乎总是要求A-Level数学取得高分。纯数学中的逻辑与抽象——如证明、集合论和代数操作——与算法设计、计算理论和复杂度分析中所需的推理高度相似。对于CIE IGCSE学生来说，在剑桥IGCSE数学（0580）或附加数学（0606）中取得优异成绩是构建这一数学能力档案的第一步。
Further Mathematics is not a universal requirement, but it can significantly strengthen an application, especially for courses that are heavily mathematical, such as those at Imperial or Oxford. It deepens understanding of matrices, complex numbers, and differential equations, all of which have applications in computer graphics, cryptography, and scientific computing. If your school offers Further Mathematics, opting for it and doing well can give you a competitive edge. If not, you should document any independent study in your personal statement.
进阶数学并不是普遍要求，但它能显著增强申请的竞争力，尤其是对于帝国理工学院或牛津大学等高度数学化的课程。它加深了对矩阵、复数与微分方程的理解，这些内容在计算机图形学、密码学和科学计算中都有应用。如果学校提供进阶数学课程，选择它并取得好成绩会让你脱颖而出。如果不提供，则应在个人陈述中记录任何自主学习经历。
4. GCSE/IGCSE Requirements and Their Impact | GCSE/IGCSE要求及其影响
While university offers are mainly based on predicted and achieved A-Level grades, GCSE/IGCSE performance remains an important indicator for many selective institutions. For computer science, strong grades in Mathematics, English Language, and Science at GCSE are seen as a sign of academic diligence. Universities such as Oxford and Imperial often look for a majority of grades at 7–9 (A–A* in the CIE system) across all subjects. Specific subject checks are made for mathematics: achieving a grade 9 (or an A* in CIE IGCSE Mathematics) is highly advantageous.
虽然大学录取主要依据A-Level的预估和实考成绩，但对于许多精英大学来说，GCSE/IGCSE成绩仍然是一个重要指标。在计算机科学申请中，GCSE数学、英语和科学的优异成绩被视为学业勤奋的标志。牛津大学和帝国理工学院等通常会关注所有科目中大部分成绩达到7–9（CIE体系中的A–A*）。数学成绩尤其会被特别审视：取得9分（或CIE IGCSE数学A*）非常有利。
Candidates with a CIE IGCSE in Computer Science (0478) can use this qualification to demonstrate early passion and technical grounding. The syllabus covers binary and hexadecimal representation, logic gates, high- and low-level programming, and network fundamentals. These topics often reappear in university admissions interviews and can form the basis of super-curricular projects mentioned in your personal statement. A strong grade (A or A*) in CIE Computer Science signals to admissions tutors that you already possess a solid understanding of key computing concepts.
拥有CIE IGCSE计算机科学（0478）资格的申请人，可以用此证明早期的热情和技术基础。大纲涵盖了二进制与十六进制表示、逻辑门、高级与低级编程以及网络基础。这些主题经常在大学入学面试中再次出现，也可构成个人陈述中提及的课外学术项目的基础。在CIE计算机科学中取得优异成绩（A或A*），向招生导师表明你已经扎实掌握了关键的计算概念。
5. CIE Computer Science (IGCSE) Syllabus Alignment | CIE计算机科学（IGCSE）大纲匹配度
The CIE IGCSE Computer Science syllabus is explicitly designed to introduce fundamental computing theory and practical programming skills. It aligns well with the expectations of university courses in several areas. The theory component – data representation, computer architecture, networks, and cybersecurity – provides a vocabulary and conceptual framework that will be assumed at the undergraduate level. Meanwhile, the practical programming tasks, often in Python, Java, or Visual Basic, build the problem-solving mindset that underpins coursework and technical interviews.
CIE IGCSE计算机科学大纲明确设计为介绍基本计算理论和实际编程技能。它在多个领域与大学课程期望高度吻合。理论部分——数据表示、计算机体系结构、网络和网络安全——提供了本科生阶段将被预先假设的术语体系和概念框架。而实践编程任务（通常使用Python、Java或Visual Basic）则培养了支撑课程作业和技术面试的问题解决思维模式。
However, university courses go much deeper. IGCSE programming focuses on sequence, selection, iteration, arrays, and file handling. A typical computer science degree expects you to rapidly progress to data structures (stacks, queues, trees, graphs), algorithms (searching, sorting, recursion, dynamic programming), and object-oriented design. The IGCSE is an excellent precursor, but students should self-study beyond the syllabus – perhaps by completing online courses like Harvard’s CS50 or engaging with coding challenges on platforms such as LeetCode or Project Euler – to bridge the gap.
然而，大学课程要深入得多。IGCSE编程侧重于顺序、选择、迭代、数组和文件处理。典型的计算机科学学位期望你能迅速进阶到数据结构（栈、队列、树、图）、算法（搜索、排序、递归、动态规划）和面向对象设计。IGCSE是极好的先导，但学生应超越大纲进行自学——例如学习哈佛CS50等在线课程，或在LeetCode或Project Euler等平台参与编码挑战——以填补差距。
The alignment also extends to the exam assessment format. CIE Computer Science includes a paper on problem-solving and programming, where students trace pseudocode and write algorithms. This mirrors the logic assessment in some university entrance tests like the TMUA (Test of Mathematics for University Admission), where precise reasoning and step-by-step problem-solving are tested. Therefore, practising the IGCSE algorithmic questions diligently is a form of early preparation.
这种匹配也延伸到了考试评估形式。CIE计算机科学包含一张问题解决与编程试卷，学生需要跟踪伪代码并编写算法。这与一些大学入学测试（如TMUA）中的逻辑评估相似，后者测试精确推理和逐步解题能力。因此，勤加练习IGCSE算法题是一种早期准备形式。
6. Recommended A-Level Subjects for Computer Science | 推荐选修的A-Level科目
For Year 11 students planning to apply for computer science, the ideal A-Level combination is Mathematics, Further Mathematics, and Computer Science (CIE 9618) or Physics. This trio covers the mathematical rigour, problem-solving, and technical content that admissions tutors seek. An alternative strong combination is Mathematics, Computer Science, and Physics. Chemistry or Economics can be taken as a fourth subject to demonstrate breadth, but mathematics should always be the priority.
对于计划申请计算机科学的11年级学生，理想的A-Level组合是数学、进阶数学和计算机科学（CIE 9618）或物理。这三门课涵盖了招生导师所追求的数学严谨性、问题解决能力和技术内容。另一强有力的组合是数学、计算机科学和物理。化学或经济学可作为第四门科目以展示广度，但数学应始终是优先项。
It is important to check specific university requirements. For example, the University of Cambridge’s Computer Science course requires A-Level Mathematics, and most successful applicants offer Further Mathematics to at least AS-Level. Oxford’s Computer Science requires Mathematics at A* and recommends Further Mathematics. Imperial similarly expects Mathematics and at least one of Computer Science, Further Mathematics, or Physics. Meanwhile, many modern universities (e.g., York, Leeds) require Mathematics and will accept a range of second subjects including Business or Psychology, though a strong scientific profile remains more competitive.
查阅具体大学要求很重要。例如，剑桥大学计算机科学专业要求A-Level数学，大多数成功申请人至少提供AS-Level进阶数学。牛津大学计算机科学要求数学A*并推荐进阶数学。帝国理工学院同样要求数学，并期望至少一门来自计算机科学、进阶数学或物理。而许多现代大学（如约克、利兹）要求数学，并接受商业或心理学等一系列第二科目，但扎实的科学背景仍更具竞争力。
7. Super-Curricular Activities to Strengthen Your Application | 增强申请的课外学术活动
Super-curricular activities are those that go beyond the school syllabus and show genuine intellectual curiosity. For computer science, this can include completing a substantial coding project, contributing to open-source software, learning a new programming language, or studying a specialised topic such as machine learning or cryptography. Using your CIE IGCSE programming skills to build a small application – for example, a simple game, a website backend, or a data analysis script – gives you concrete evidence to discuss in your personal statement and interviews.
课外学术活动是指超越学校大纲、展现真正求知欲的活动。对于计算机科学，这可以包括完成一个实质性的编程项目、为开源软件做出贡献、学习一门新的编程语言，或研究机器学习或密码学等专题。利用你的CIE IGCSE编程技能构建一个小型应用——例如一个简单游戏、网站后端或数据分析脚本——可以为你在个人陈述和面试中提供具体讨论素材。
Reading books and articles about computing is another valuable activity. Classics like 'Code: The Hidden Language of Computer Hardware and Software' by Charles Petzold or 'Algorithms to Live By' by Brian Christian and Tom Griffiths help connect theoretical concepts to real-world applications. Following blogs, podcasts, and university lecture series (many available on YouTube) also demonstrates sustained engagement. Documenting these super-curricular activities in a learning journal can later help you craft a compelling personal story.
阅读计算机相关的书籍和文章是另一项有价值的活动。诸如Charles Petzold所著的《编码：隐匿在计算机软硬件背后的语言》或Brian Christian与Tom Griffiths合著的《指导生活的算法》等经典著作，有助于将理论概念与实际应用联系起来。关注博客、播客和大学系列讲座（YouTube上有很多资源）也能展现持续的投入。用学习日志记录这些课外学术活动，之后有助于打造一个引人入胜的个人故事。
Competitions such as the British Informatics Olympiad (BIO) or the Oxford University Computing Challenge (OUCC) provide structured challenges that extend algorithmic thinking. Even if you do not win a prize, participation shows initiative and can provide excellent material for your UCAS application. Many of these competitions assume only GCSE-level knowledge, making Year 11 an ideal time to start.
诸如英国信息学奥林匹克（BIO）或牛津大学计算挑战（OUCC）等竞赛，提供了扩展算法思维的结构化挑战。即使没有获奖，参与也显示出主动性，并能为你UCAS申请提供极佳素材。许多这类竞赛只假设GCSE水平的知识，因此11年级是开始的理想时机。
8. University Admissions Tests (TMUA, STEP, MAT) and Computer Science | 大学入学考试（TMUA, STEP, MAT）与计算机科学
Several top UK universities now require or recommend admissions tests for computer science. The Tests of Mathematics for University Admission (TMUA) is used by Imperial, Warwick, Durham, and others. The TMUA assesses mathematical thinking and logical reasoning – it does not require knowledge beyond GCSE and A-Level Mathematics, but the questions demand deep problem-solving skills. Familiarity with the type of algorithmic logic encountered in CIE Computer Science pseudocode tasks is directly beneficial for the TMUA’s logical reasoning paper.
目前，多所英国顶尖大学要求或推荐计算机科学申请者参加入学测试。数学入学测试（TMUA）被帝国理工学院、华威大学、杜伦大学等采用。TMUA评估数学思维和逻辑推理——其所需知识不超出GCSE和A-Level数学范围，但题目要求深厚的问题解决技能。熟悉CIE计算机科学伪代码任务中的算法逻辑，对TMUA的逻辑推理部分有直接帮助。
The Sixth Term Examination Paper (STEP) is traditionally used by Cambridge and some other universities for mathematics, but occasionally it is recommended for joint mathematics and computer science courses. STEP focuses on advanced mathematical problem-solving; thus, it is more relevant if you are also considering mathematics degrees. Oxford uses its own Mathematics Admissions Test (MAT) for Computer Science and joint courses. The MAT tests pure mathematics skills, similar to A-Level, and does not contain computing questions. Therefore, strong pure mathematical training is essential, and your CIE IGCSE Computer Science background, though useful, is not directly tested in these assessments.
第六学期考试（STEP）传统上被剑桥及若干其他大学用于数学专业，但偶尔也被推荐给数学与计算机科学联合课程。STEP侧重于高级数学问题解决，因此如果你也考虑数学学位，它会更为相关。牛津大学对其计算机科学及联合课程使用自己的数学入学考试（MAT）。MAT测试纯数学技能，类似A-Level，不包含计算题。因此，扎实的纯数学训练至关重要，你的CIE IGCSE计算机科学背景虽然有用，却不会在这些测试中被直接考核。
Preparation for these tests should begin in Year 12, but Year 11 students can familiarise themselves with the style of questions early. Practising TMUA past papers and working through logical puzzles can sharpen the exact reasoning skills that these exams reward. The algorithmic mindset gained from CIE IGCSE – where you systematically break down problems and design solutions – translates well into structured test preparation.
这些测试的备考应始于12年级，但11年级学生可以提前熟悉题型。练习TMUA历年真题并攻克逻辑谜题，能磨砺这些考试所注重的那种精确推理技能。从CIE IGCSE中培养的算法思维——系统地分解问题并设计方案——能很好地转化为结构化的考试准备。
9. Personal Statement Tips for Computer Science Applicants | 计算机科学申请者个人陈述建议
The UCAS personal statement is your opportunity to demonstrate passion, experience, and readiness for the course beyond grades. For computer science, you should aim to show that you understand what studying computer science at university entails – it is not just about coding but also about logic, mathematics, and understanding of systems. Reference your CIE Computer Science (IGCSE) projects, explaining what you learned and why it motivated you to study further. Mention any super-curricular books, courses, or projects to evidence sustained independent study.
UCAS个人陈述是你展示超越成绩的热情、经验和课程准备度的机会。对于计算机科学，你应该表明自己理解大学阶段学习计算机科学的内涵——它不仅仅是编程，还涉及逻辑、数学和系统理解。提及你的CIE计算机科学（IGCSE）项目，解释你从中学到了什么，以及它为何激励你进一步学习。提及任何课外学术书籍、课程或项目，以证明持续的自主学习。
Avoid generic statements like 'I love technology' or 'I have been interested in computers since childhood.' Instead, be specific: describe a challenging algorithm you implemented, a bug you debugged, or an ethical issue in computing that you researched. Universities want to see reflective thinking. Connect your CIE IGCSE knowledge – for example, the concept of abstraction in data representation or the fetch-decode-execute cycle – to a wider context, demonstrating that you can think beyond the syllabus.
避免使用笼统的表述，比如‘我热爱科技’或‘我从小就喜欢计算机’。要具体：描述你实现的一个具有挑战性的算法、调试过的一个程序错误，或你研究的某个计算伦理问题。大学希望看到反思性思维。将你的CIE IGCSE知识——例如数据表示中的抽象概念或取指-译码-执行周期——与更广泛的背景联系起来，展现你能超越大纲进行思考。
The personal statement should also include evidence of soft skills, such as teamwork and communication, which you can illustrate through group coding projects or participation in computing clubs. However, keep a tight focus on academic discussion, as the statement is primarily a short essay to convince academics of your suitability. A well-structured narrative that ties your IGCSE studies to your future ambitions will stand out.
个人陈述还应包括软技能的证据，如团队合作和沟通能力，你可以通过小组编码项目或参与计算机俱乐部来体现。不过，重点要牢牢放在学术讨论上，因为这篇陈述本质上是一篇说服学术人员的短文。一个结构良好、将你的IGCSE学习与未来志向联系起来的叙述将脱颖而出。
10. Alternative Routes: Foundation Years and Apprenticeships | 替代途径：预科课程和学徒制
Not all students follow the traditional A-Level-to-university path. For those who do not meet the direct entry requirements for a computer science degree – perhaps due to A-Level subject choices or grades – a foundation year can be an excellent alternative. Foundation programmes at universities such as Southampton, Manchester, or Queen Mary cover the necessary mathematics, programming, and study skills to progress to the full degree. CIE IGCSE Computer Science provides a useful baseline, making the transition smoother.
并非所有学生都遵循传统的A-Level到大学的路径。对于那些不满足计算机科学学位直接入学要求的学生——也许是因为A-Level选科或成绩——预科课程是一个很好的替代。南安普顿大学、曼彻斯特大学或伦敦玛丽女王大学等院校的预科课程涵盖必要的数学、编程和学习技能，以衔接到完整的学位课程。CIE IGCSE计算机科学提供了一个有用的基线，使过渡更加顺利。
Degree apprenticeships in digital and technology solutions are another route, combining paid work with part-time study leading to a bachelor’s degree. These are offered by employers such as BT, IBM, and many government departments. The entry requirements may be lower than for full-time top-tier courses, but they still look for a strong maths background and evidence of computing interest. Your CIE Computer Science qualification, together with recommended GCSE grades, can make you a competitive applicant for such positions.
数字与技术解决方案领域的学位学徒制是另一条路径，它将有偿工作与带薪非全日制学习结合起来，最终获得学士学位。BT、IBM和许多政府部门等雇主都提供这类项目。入学要求可能低于全日制顶尖课程，但它们仍然寻求扎实的数学背景和计算兴趣证据。你的CIE计算机科学资格，连同推荐的GCSE成绩，可以让你在此类职位申请中具备竞争力。
11. Case Studies: Top UK Universities Entry Requirements | 案例研究：顶尖英国大学的入学要求
To make the requirements concrete, here are concise comparisons for some top computer science courses, using actual published conditions (subject to change each year, so always verify):
为了让要求具体化，这里对部分顶尖计算机科学课程进行简要对比，使用已公布的实际条件（逐年可能变化，请务必核实）：
| University | Typical A-Level Offer | CIE IGCSE Note |
|---|---|---|
| University of Cambridge | A*A*A (Maths required; Further Maths strongly recommended; TMUA required) | Most successful applicants have a strong suite of 8-9 (A*) grades including in Maths and Computer Science if taken. |
| University of Oxford | A*AA with the A* in Mathematics (if taking Further Maths; MAT required) | High GCSE performance is critical; CIE Computer Science appreciated but not a formal requirement. |
| Imperial College London | A*A*A – A*AAA, with A* in Mathematics; prefer Further Maths or Physics or Comp Sci; TMUA required | Strong GCSEs needed; CIE IGCSE CS an advantage to show sustained interest. |
| UCL | A*A*A with A* in Mathematics; prefer Further Maths | Good GCSE profile expected; CS IGCSE can support application. |
| University of Warwick | A*AA including A* in Maths; TMUA recommended | Clear GCSE evidence of mathematical ability is key. |
These examples illustrate that while A-Level performance is the primary focus, GCSE/IGCSE results and subject choice play a substantial supporting role. A strong grade in CIE IGCSE Computer Science is never a disadvantage and can strengthen your profile as a committed candidate.
这些例子说明，虽然A-Level成绩是主要焦点，但GCSE/IGCSE成绩和科目选择扮演着重要的辅助角色。在CIE IGCSE计算机科学中取得优异成绩绝不会是劣势，反而可以强化你的申请形象，展现你是一位坚定的申请者。
12. Planning Your Year 11 Summer and Beyond | 规划你的11年级暑假及以后
The summer between Year 11 and sixth form is a golden opportunity to build a robust foundation for your university application. With the CIE IGCSE Computer Science syllabus fresh in your mind, deepen your knowledge by tackling a self-directed programming project. Explore a new language like Haskell or C++ to understand different programming paradigms, or implement the sorting and search algorithms from the IGCSE in a more efficient manner, comparing their time complexities. Document your learning to refer back to when writing your personal statement.
11年级升入sixth form之间的暑假是一个为大学申请打下扎实基础的黄金机会。趁着对CIE IGCSE计算机科学大纲记忆犹新，通过开展一个自主编程项目来加深理解。探索像Haskell或C++这样的新语言，了解不同的编程范式，或者用更高效的方式实现IGCSE中排序和搜索算法，并比较它们的时间复杂度。记录你的学习过程，以便在撰写个人陈述时回顾参考。
Start preparing for the TMUA or similar tests by working through logical reasoning puzzles and practicing maths problems beyond the syllabus. Also research the specific universities and courses you might target, making a spreadsheet of entry requirements, test dates, and open day schedules. Attend university open days (virtually or in person) to ask current students about the realities of the course. This level of organisation shows maturity and significantly reduces stress during the actual application year.
开始为TMUA或类似测试做准备，通过攻克逻辑推理谜题并练习
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