Year 7 CIE Computer Science Unit Test Mock Paper Walkthrough | 七年级CIE计算机单元测试模拟卷解析

📚 Year 7 CIE Computer Science Unit Test Mock Paper Walkthrough | 七年级CIE计算机单元测试模拟卷解析

This article provides a detailed walkthrough of a mock unit test for Year 7 CIE Computer Science, covering core topics such as hardware and software, binary, internet safety, algorithms, and computer systems. Each section presents a test question, the correct answer, and an explanation to help you revise effectively.

本文详细解析了一份针对七年级CIE计算机课程的单元测试模拟卷，涵盖硬件与软件、二进制、网络安全、算法以及计算机系统等核心主题。每个部分将展示一道试题、正确答案及解析，帮助你高效复习。

1. Hardware vs Software | 硬件与软件

Question: Explain the difference between hardware and software. Give one example of each.

问题：解释硬件和软件的区别，并各举一例。

Hardware refers to the physical components of a computer that you can touch, such as the keyboard, mouse, or monitor. Software consists of the programs and instructions that tell the hardware what to do, like Microsoft Word or a web browser. An operating system is also software.

硬件指计算机中可以触摸的物理部件，如键盘、鼠标或显示器。软件则是由程序和指令组成，它们告诉硬件该做什么，例如 Microsoft Word 或网络浏览器。操作系统也属于软件。

Many students incorrectly say that software is something you can download but not touch, which is partly true, but the key distinction is physical versus non-physical. Remember, even downloaded files are software.

许多学生错误地认为软件是可以下载但不能触摸的东西，这有一定道理，但关键区别在于物理与非物理。记住，即使下载的文件也属于软件。

2. Input and Output Devices | 输入与输出设备

Question: Identify three input devices and three output devices.

问题：指出三种输入设备和三种输出设备。

Examples of input devices are a keyboard (enters text), a mouse (moves a pointer), and a microphone (captures sound). Output devices include a monitor (displays images), speakers (produce sound), and a printer (produces hard copies).

输入设备的例子包括键盘（输入文本）、鼠标（移动指针）和麦克风（捕捉声音）。输出设备包括显示器（显示图像）、扬声器（产生声音）和打印机（制作纸质副本）。

A common mistake is to classify a touchscreen as only an input device; it is both an input and output device because it displays information and detects touch.

常见的错误是将触摸屏仅归类为输入设备；它既是输入设备也是输出设备，因为它既能显示信息又能检测触摸。

3. Binary and Denary Conversion | 二进制与十进制转换

Question: What is the binary number system? Convert the binary number 1101₂ to denary (decimal).

问题：什么是二进制数制？将二进制数 1101₂ 转换为十进制数。

The binary system is a base-2 number system that uses only two digits, 0 and 1. Computers use binary because they work with two electrical states: on and off. To convert 1101₂ to denary, we multiply each bit by its place value:

二进制是一种以2为基数的数制，仅使用0和1两个数字。计算机使用二进制是因为它们处理两种电状态：开和关。要将1101₂转换为十进制，我们将每一位乘以其位值：

1101₂ = (1 × 2³) + (1 × 2²) + (0 × 2¹) + (1 × 2⁰) = 8 + 4 + 0 + 1 = 13

The denary equivalent is 13. Always start from the rightmost bit, which is 2⁰ (1), and move left, doubling the place value each time (2, 4, 8, …).

十进制等值是13。始终从最右边的位（2⁰ = 1）开始，向左移动，每次位值翻倍（2、4、8……）。

4. Internet Safety Rules | 网络安全规则

Question: Describe two safety rules for using the internet.

问题：描述使用互联网的两条安全规则。

Rule 1: Never share personal information such as your full name, address, or phone number with strangers online. This protects your identity and physical safety.

规则1：切勿与网上的陌生人分享个人信息，如全名、地址或电话号码。这可以保护你的身份和人身安全。

Rule 2: Use strong passwords that include a mix of letters, numbers, and symbols, and do not reuse the same password across different websites. A password manager can help.

规则2：使用包含字母、数字和符号混合的强密码，且不要在不同的网站上重复使用相同的密码。密码管理器可以提供帮助。

Other acceptable answers include not clicking on suspicious links, reporting cyberbullying, and balancing screen time. Always apply the THINK rule: True, Helpful, Inspiring, Necessary, Kind?

其他可接受的答案包括不点击可疑链接、举报网络欺凌以及合理安排屏幕使用时间。始终应用 THINK 规则：真实、有帮助、鼓舞人心、必要、友善？

5. What is an Algorithm? | 什么是算法？

Question: What is an algorithm? Provide a simple example from daily life.

问题：什么是算法？举一个日常生活中的简单例子。

An algorithm is a precise, step-by-step set of instructions to solve a problem or complete a task. It must be clear, unambiguous, and have a defined sequence. A recipe is a good example: to make a cup of tea, you boil water, place a tea bag in a cup, pour the boiling water, wait a few minutes, then remove the tea bag and add milk or sugar if desired.

算法是一套精确的、逐步的指令，用于解决问题或完成任务。它必须清晰、无歧义且有一个明确的顺序。食谱是一个很好的例子：要泡一杯茶，你需要烧水，把茶包放入杯中，倒入沸水，等待几分钟，然后取出茶包并根据需要加牛奶或糖。

In computing, algorithms are used to sort data, perform calculations, and control programs. Flowcharts and pseudocode are common ways to represent them before coding.

在计算机领域，算法用于排序数据、执行计算和控制程序。流程图和伪代码是编码前表示算法的常见方法。

6. Inside a Computer System | 计算机系统内部

Question: Label the three main internal components in the diagram (CPU, RAM, Hard Drive). Explain the role of the CPU.

问题：在图中标记出三个主要的内部组件（CPU、RAM、硬盘）。解释 CPU 的作用。

The three core components are the Central Processing Unit (CPU), Random Access Memory (RAM), and the hard drive (or solid-state drive). The CPU acts as the ‘brain’ of the computer; it fetches, decodes, and executes instructions from programs and processes all the data. It performs arithmetic and logical operations.

三个核心组件是中央处理器（CPU）、随机存取存储器（RAM）和硬盘（或固态硬盘）。CPU 扮演计算机的“大脑”；它从程序中取出、解码并执行指令，并处理所有数据。它执行算术和逻辑运算。

RAM is temporary memory that holds data the CPU is actively using; it loses its contents when power is off. The hard drive provides long-term storage. A common misconception is that more RAM directly increases the CPU speed, but it simply allows more tasks to run smoothly simultaneously.

RAM 是临时存储器，保存 CPU 正在使用的数据；断电后其内容会丢失。硬盘提供长期存储。一个常见的误解是更多的 RAM 会直接提高 CPU 速度，但它只是允许同时更顺畅地运行更多任务。

7. Is a Smartphone a Computer? | 智能手机是计算机吗？

Question: True or False: “A smartphone is a computer.” Justify your answer.

问题：判断对错：“智能手机是一台计算机。”并证明你的答案。

True. A smartphone meets the definition of a computer because it has a processor (CPU), memory (RAM), storage, input devices (touchscreen, microphone), output devices (screen, speakers), and runs an operating system (e.g., iOS or Android) that executes applications. It can process data, connect to networks, and perform general-purpose tasks just like a desktop or laptop.

正确。智能手机符合计算机的定义，因为它有处理器（CPU）、内存（RAM）、存储器、输入设备（触摸屏、麦克风）、输出设备（屏幕、扬声器），并且运行一个操作系统（如 iOS 或 Android）来执行应用程序。它可以处理数据、连接网络并执行通用任务，就像台式机或笔记本电脑一样。

The only difference from a traditional computer is the form factor and the emphasis on mobile connectivity and touch interface, but the fundamental architecture is the same.

与传统计算机的唯一区别是外形尺寸以及对移动连接和触摸界面的侧重，但基本架构是相同的。

8. Writing an Algorithm: Jam Sandwich | 编写算法：果酱三明治

Question: Write a step-by-step algorithm to make a jam sandwich. Assume all ingredients are on the table.

问题：编写一个逐步算法来制作一份果酱三明治。假设所有配料都在桌子上。

A precise algorithm should include detailed instructions, avoiding ambiguity. Example:

一个精确的算法应该包含详细的指令，避免歧义。示例：

1. Pick up two slices of bread and place them on a plate.
2. Open the jar of jam using both hands.
3. Pick up a butter knife by its handle.
4. Dip the knife into the jam jar and scoop a small amount of jam.
5. Spread the jam evenly onto one side of one slice of bread.
6. Place the second slice of bread on top of the jam-covered slice, with the dry sides facing outward.
7. Gently press down on the sandwich to stick the slices together.
8. If desired, cut the sandwich in half diagonally using a clean knife.
9. Serve on the plate.

1. 拿起两片面包，并将它们放在一个盘子上。
2. 用双手打开果酱罐。
3. 握住黄油刀的刀柄将其拿起。
4. 将刀插入果酱罐，舀取少量果酱。
5. 将果酱均匀涂抹在一片面包的一面上。
6. 将第二片面包盖在涂有果

Published by TutorHao | Year 7 Computer Science Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）

Year 7 CIE Computer Science Unit Test Mock Paper Walkthrough | 七年级CIE计算机单元测试模拟卷解析