U4 D 单元限时检测-【初中必刷题】2026-2027学年八年级上册英语同步课件（外研版·新教材）

该初中英语课件围绕“Unit 4 Digital life”主题，以“科技改变生活”科技节为大单元情境，整合数字技术应用（如智能拐杖、AI发明、大数据等）的语篇材料，通过完形填空、阅读理解、语法填空等任务，系统梳理相关词汇、语法及语篇理解策略，构建“主题情境—语言技能—知识拓展”的完整知识网络。 其亮点在于采用情境化任务链设计，如通过“数字技术利弊分析”完形填空培养语言理解能力，“AI发明介绍”阅读理解提升推理与信息整合的思维品质，分层任务（基础题到书面表达）满足不同学生需求。详细解析与知识拓展辅助学生巩固语言知识，助力教师精准把握学情，提升复习效率。

英 语 八年级上册 WY 1 2 3 Unit 4 Digital life 4 D 单元限时检测 5 刷速度 6 大单元主题情境 学校举办了一场以“科技改变生活”为主题的科技节，每个学生都 讨论了科技对生活的影响。 返回目录 7 速度 情境1 Nab提出数字技术从助残器具、教育公平到消防机器人，深刻改变了生活,虽存在 过度用眼和信息风险，但合理运用仍能造福人类。 任务一 完形填空（10分） 【2026山东烟台调研】Digital technology has changed our lives in many ways. From the moment we wake up to the time we go to bed, we are surrounded （环绕） by digital products and technologies. 刷速度 返回目录 8 A new type of smart walking stick is helping blind people live more . .1. ..It can detect （检测） objects as soon as the user gets close and . .2. . them of danger. It can also provide directions and bus timetables, making outdoor activities safer for the disabled. In education, digital technology is bridging （消除） the gap between urban and rural areas. In India, rural schools with internet connections now have access to online lessons from top schools in big cities. This gives students in remote areas the same learning . .3. . as those in cities. 刷速度 返回目录 Firefighting robots are another example of digital technology in use. These robots can walk, run and climb in dangerous fire environments. They . .4. . video information to the control unit, helping firefighters make safe plans. This . .5. . firefighters from unnecessary risks. However, digital life also has . .6. ..Some people spend too much time on screens, which easily . .7. . to less physical exercise. There are also risks of personal information being collected by hidden software. Except for these problems, digital technology is still . .8. . a big part in our lives. It’s important to use it . .9. . and balance digital time with real-life . .10. ..#6 完形填空·语篇导读 本文主要介绍了数字技术的好处与存在的问题，指出人们需 要明智使用并平衡其与现实生活。 刷速度 返回目录 1.( ) A.safely B.slowly C.suddenly D.noisily A 【解析】句意为：一种新型智能拐杖正帮助盲人更安全地生活。safely意为“安 全地”；slowly意为“缓慢地”；suddenly意为“突然”；noisily意为“吵闹 地”。根据“It can detect objects as soon as the user gets close and… them of danger.”可知，智能拐杖能检测物体并提醒危险，可帮助盲人更安全地 生活，故选A项。 刷速度 返回目录 11 2.( ) A.talk B.say C.speak D.warn D 【解析】句意为：它能在使用者一靠近物体时就检测到，并提醒他们有危险。 talk意为“谈论”；say意为“说”；speak意为“讲话”；warn意为“提醒；警 告”。根据语境可知，智能拐杖检测到危险后会提醒使用者，故选D项。 知识拓展 warn sb to do sth意为“告诫某人做某事”，warn sb about sth意为“警告某 人某事/某物”。 刷速度 返回目录 12 3.( ) A.results B.chances C.jobs D.games B 【解析】result意为“结果”；chance意为“机会”；job意为“工作”；game意 为“游戏”。根据“In India, rural schools with internet connections now have access to online lessons from top schools in big cities.”可知，农 村学生能学习城市的优质课程，拥有了和城市的学生一样的学习机会，故选B项。 刷速度 返回目录 13 4.( ) A.receive B.refuse C.send D.hide C 【解析】receive意为“接收”；refuse意为“拒绝”；send意为“发送”；hide 意为“隐藏”。根据helping firefighters make safe plans可知，机器人要把 现场视频信息发送给控制单元，消防员才能据此制订计划，故选C项。 知识拓展 send sb sth=send sth to sb 把某物送/发送/寄给某人 刷速度 返回目录 14 5.( ) A.protects B.hurts C.follows D.invites A 【解析】protect意为“保护”；hurt意为“伤害”；follow意为“跟随”； invite意为“邀请”。protect sb/sth from sth意为“保护某人/物免受……”， 符合语境，故选A项。 知识拓展 protect作动词，意为“保护”，“protect sb against/from…”意为“保护某 人免受……”。其名词形式为protection，意为“保护”。 刷速度 返回目录 15 6.( ) A.advantages B.purposes C.disadvantages D.differences C 【解析】句意为：然而，数字生活也有缺点。advantage意为“优点”；purpose 意为“目的”；disadvantage意为“缺点”；difference意为“不同”。前文介 绍了数字技术的好处，根据However及后文可知，此处要讲数字生活的不足，即缺 点，故选C项。 7.( ) A.leads B.finds C.gets D.makes A 【解析】lead意为“导致”；find意为“找到”；get意为“得到”；make意为 “制作；使”。根据语境可知，花太多时间在屏幕上会导致锻炼减少，lead to意 为“导致”，故选A项。 刷速度 返回目录 16 8.( ) A.doing B.hearing C.taking D.playing D 【解析】句意为：尽管存在这些问题，数字技术仍然在我们的生活中起重要作用。 根据语境可知，此处表示“在我们的生活中起重要作用”，play a part in为 “在……中起作用”，故选D项。 刷速度 返回目录 17 9.( ) A.carelessly B.wisely C.quickly D.loudly B 【解析】句意为：明智地使用它，并平衡数字时间和现实生活的活动是很重要的。 carelessly意为“粗心地”；wisely意为“明智地”；quickly意为“快速地”； loudly意为“大声地”。根据语境可知，数字技术虽有问题但很重要，所以要明 智地使用它，故选B项。 10.( ) A.problems B.technologies C.activities D.products C 【解析】problem意为“问题”；technology意为“技术”；activity意为“活 动”；product意为“产品”。根据语境可知选C项。 刷速度 返回目录 18 情境2 Poer介绍了四种人工智能发明:诗歌创作AI、乒乓球机器人、自动驾驶AI和人脸识别。 任务二 阅读理解A（10分） 【2025天津期末】AI has changed our lives. There are four useful AI inventions here.#1 Jiuge The AI can remember 300,000 Chinese poems clearly. What’s more, it can write a poem in a very short time. In a CCTV show, Jiuge beat three great poem fans from famous colleges. 刷速度 返回目录 19 Forpheus The ping-pong robot can play in an easy way with a beginner and a difficult way with a better player. What’s more, it not only encourages players with words like “Good job!” but also gives some good advice to improve their skills. Self-driving AI It can drive the car more safely than humans. It doesn’t drink wine and never feels tired. It can do what we humans do. For example, if a car with this AI has passed a bus, it will flash （闪） two white lights side to side to show thanks to the bus. 续表 刷速度 返回目录 20 Facial Recognition （人脸识别） It is used a lot in the world such as ACS.ACS won’t let a stranger in without the house owner’s permission （允许）.Paying by facial recognition is common now. The police in Hangzhou even caught a criminal （罪犯） at a concert with its help. 续表 阅读A篇·语篇导读 文章主要介绍了四种有用的人工智能发明。 刷速度 返回目录 11.Why is Jiuge special?( ) C A.Because it can play the violin. B.Because it can drive cars safely. C.Because it’s good at poems. D.Because it was on CCTV. 【解析】细节理解题。根据“The AI can remember 300,000 Chinese poems clearly.What’s more, it can write a poem in a very short time.”可知， 九歌擅长背诗和写诗。故选C项。 刷速度 返回目录 22 12.What will Forpheus do while playing?( ) D A.It will guess what the player’s job is. B.It will be angry if the player is a beginner. C.It will say “What a shame!” to the player. D.It will change its way of playing according to different players. 【解析】推理判断题。根据“The ping-pong robot can play in an easy way with a beginner and a difficult way with a better player.”可知，乒乓球 机器人能根据运动员的不同水平改变打球的方法。故选D项。 刷速度 返回目录 23 13.When does the Self-driving AI car flash two white fights side to side?( ) A A.When it has passed other vehicles. B.When the car wants to slow down. C.When the car is ready to speed up. D.When the car has to stop. 【解析】细节理解题。根据“For example, if a car with this AI has passed a bus, it will flash two white lights side to side to show thanks to the bus.”可知，拥有这种人工智能的汽车超过其他车辆时，它就会闪两边的白 色灯来表示感谢。故选A项。 刷速度 返回目录 24 14.What does the underlined word “ACS” mean in Chinese?( ) C A.电子商务 B.社会福利 C.门禁控制系统 D.公共卫生系统 【解析】词义猜测题。根据“ACS won’t let a stranger in without the house owner’s permission.”可知，ACS未经房子主人的允许不会让陌生人进入； 据此可以推断，画线词意为“门禁控制系统”。故选C项。 高分技巧 有些词义猜测题没有明显的标志或线索，这时我们可以利用上下文提供的语境， 进行合乎逻辑的综合分析，通过对比选项推测出画线部分的含义。 刷速度 返回目录 25 15.Which is TRUE according to the passage?( ) D A.No one can beat Forpheus. B.Jiuge has written 300,000 poems. C.Self-driving AI can make subway trains safer. D.Facial Recognition helped the police catch a criminal. 【解析】细节理解题。根据“The police in Hangzhou even caught a criminal at a concert with its help.”可知，人脸识别技术帮助警方抓到了罪犯。故选 D项。 刷速度 返回目录 26 情境3 Ober讨论了数字技术通过在线游览古迹、修复文物和智能研究等创新手段，让历 史学习更生动有趣，有利于助力文化遗产保护。 任务三 阅读理解B（8分） 【2026重庆调研】History is an important part of human culture. It helps us learn from the past and plan for the future. However, it is hard for us to truly experience history. Now, digital technology is changing the way we learn about history. 刷速度 返回目录 27 Digital technology allows people to “visit” historical places online. For example, students can explore ancient buildings or cities through their computers. They can even walk through famous places like the Great Wall of China or the Pyramids of Egypt without leaving home. This is much more interesting than just reading books or listening to teachers. It helps them understand different cultures and life in the past in a lively way. Besides, digital technology helps protect old artworks and documents. Many old paintings and books are easily damaged （损坏） as time goes by. Museums can turn them into digital copies to save them forever. This way, people around 刷速度 返回目录 the world can see these treasures online easily. Digital tools can also help repair damaged artworks. Broken parts of ancient statues （雕塑） can be fixed on computers, so they won’t disappear over time. Digital technology is also useful for historians. In the past, studying old materials took years, but now with computers, they can work faster. They can search old texts quickly or use AI tools to find connections between events. This leads to new discoveries and ideas about history. In short, digital technology makes learning history easier and more fun. As technology keeps developing, we will find even better ways to explore and protect our culture. Maybe one day, virtual reality （VR） will let us “live” in history!#5 阅读B篇·语篇导读 本文主要说明了数字技术如何改变我们学习和理解历史的方式。 刷速度 返回目录 16. 写作手法 How does the writer develop his idea in Paragraph 2?( ) B A.By telling a story. B.By giving examples. C.By listing numbers. D.By asking questions. 【解析】细节理解题。根据第二段的“For example, students can explore ancient buildings or cities through their computers. They can even walk through famous places like the Great Wall of China or the Pyramids of Egypt without leaving home.”可知，在第二段作者主要通过举例子来呈现自己 的想法。故选B项。 刷速度 返回目录 30 17.Why do museums make digital copies of old artworks?( ) D A.Because they want to sell them online for money. B.Because they want to make the artworks look more colourful. C.Because they want to replace the real artworks. D.Because they want to protect them from being damaged. 【解析】细节理解题。根据第三段的“Many old paintings and books are easily damaged as time goes by. Museums can turn them into digital copies to save them forever.”可知选D项。 知识拓展 “turn… into…”意为“把……变成……”。 刷速度 返回目录 31 18. 写作目的 What is the writer’s purpose in writing this text?( ) C A.To tell us the advantages and disadvantages of technology. B.To compare old and new ways of learning history. C.To explain how digital technology improves history learning. D.To share a personal story about visiting museums. 刷速度 返回目录 32 【解析】推理判断题。根据第一段的“Now, digital technology is changing the way we learn about history.”以及最后一段的“In short, digital technology makes learning history easier and more fun. As technology keeps developing, we will find even better ways to explore and protect our culture.”可知，作者写这篇文章主要是在介绍数字技术是如何改变我们学 历史的方式的。故选C项。 刷速度 返回目录 33 19.What is the best title for this text?( ) A A.Digital Technology Makes History Alive B.How to Visit Museums C.The History of Digital Technology D.The Importance of Old Art 【解析】主旨大意题。文章主要说明了数字技术改变了我们学习历史的方式，让 历史变得更加生动，A选项（数字技术让历史栩栩如生）符合文章主旨。故选A项。 刷速度 返回目录 34 情境4 Ramos介绍了大数据的定义及其在政府、学校和公司中的应用，同时也探讨了大 数据可能带来的问题。 任务四 阅读还原（10分） 【2025江苏镇江期末】Big data is many sets of information that are put together to be used by a computer program. The computer program looks for different kinds of answers in the data. We can find different kinds of information from many sources in big data, such as information from the internet, schools, companies, and governments. 20.___ Another set can have what they like, how they go to school, and how much time they spend on the computer. D 刷速度 返回目录 35 Big data can be helpful in many ways. The government uses it to understand how many people travel on buses or trains. 21.___ Some schools use big data to understand how many children need extra help in class. The teachers can then give these students more help or support. 22.___ It helps them understand their buyers better. For example, one company uses weather data to see when people eat the most ice cream. 23.___ For example, although some people have not done anything wrong, it may still predict that they break the law or hurt others. How can big data be used for good and bad things? 24.___ And they usually think in their own ways and then build a thinking model. The thinking model is used to look at and understand the data.#1.3 E A C F 刷速度 返回目录 A.Companies use big data, too. B.Big data can also be used in other fields. C.However, big data can also bring trouble. D.One set of data can have people’s names and addresses. E.The information is then used to improve bus or train services. F.Computer engineers write programs to understand big data. G.Big data is so large that it’s difficult to process in traditional ways. 阅读还原·语篇导读 本文主要介绍了大数据的相关信息。 刷速度 返回目录 37 20. ___ D 【解析】根据“Another set can have what they like…”及选项可知此处介绍 了一组数据，选项D（一组数据可以包含人们的姓名和地址。）符合语境。故选D项。 21. ___ E 【解析】根据“The government uses it to understand how many people travel on buses or trains.”可知政府用它来了解乘坐公共汽车或火车的人数， 选项E（然后，这些信息被用来改善公共汽车或火车服务。）符合语境。故选E项。 刷速度 返回目录 38 22. ___ A 【解析】根据“It helps them understand their buyers better.”及选项可知 此处指企业使用大数据来帮助他们更好地了解买家，选项A（企业也使用大数据。） 符合语境。故选A项。 23. ___ C 【解析】根据下文可知此处介绍大数据带来的问题，选项C（然而，大数据也可能 带来麻烦。）符合语境。故选C项。 24. ___ F 【解析】根据“How can big data be used for good and bad things?”可知此 处引出如何解决这个问题，选项F（计算机工程师写程序来理解大数据。）符合语 境。故选F项。 刷速度 返回目录 39 情境5 Nana讲述了AI如何改变了电影制作的方式，展示了AI在创意领域的潜力。 任务五 阅读下面短文,在空白处填入一个适当的单词（有提示词的， 填入所给单词的正确形式）（10分） Making movies used to be something that only professional teams with lots of money could do. But now, thanks to AI, anyone can create a film. In 2024, for the first time, the 14th Beijing International Film Festival had 25. ___ （冠词） special part, the AIGC Short Film Unit. It got 430 films from all over the world. 26. ______________ （surprise）, independent creators made a Surprisingly 刷速度 返回目录 40 up 45 percent of the total, with the 27. __________ （young） one being just 11 years old. AIGC is changing the game by 28. _________ （let） anyone make movies. Wang Zimin, 29, got the Best Creative Award. In his film, a team was 29. _____ （set） up. Its purpose is to identify （识别） AI 30. ______ （介词） humans to prevent possible problems. In the movie, the team catches Sun Wukong, 31. __________ （think） he must be AI because of his superpowers which match the things AI can do. youngest letting set from thinking 刷速度 返回目录 But making movies with AI isn’t perfect yet. Many AI apps can only produce pieces of videos based on users’ prompts （提示词）.As a result, 32. ______________ （character） faces often appear differently in later scenes. Wang solved this problem. He only started playing with AI two months before making his 33. ____________ （success） film. Anyone can take part in AIGC.The only thing you need is to have a strong desire to express yourself 34. _____ （连词） the only limit is your imagination.#1.4 语篇导读 本文主要介绍了人们利用人工智能制作电影的相关信息。 characters’ successful and 刷速度 返回目录 25. ___ a 【解析】句意为：2024年，第十四届北京国际电影节首次有了一个特别的部分， AIGC电影短片单元。根据the AIGC Short Film Unit可知，此处表泛指，special 是发音以辅音音素开头的单词，应用不定冠词a修饰。故填a。 26. ______________ Surprisingly 【解析】句意为：令人惊讶的是，独立创作者占总数的45%，最年轻的创作者只有 11岁。分析句子结构可知，此处应用副词修饰整个句子，surprisingly意为“令 人吃惊地”，符合语境。句首单词首字母大写，故填Surprisingly。 知识拓展 surprise是名词，意为“惊讶”；surprising意为“令人惊讶的”；to one’s surprise意为“让某人惊讶的是”。 刷速度 返回目录 43 27. __________ youngest 【解析】句意见上一题解析。根据“with the… one being just 11 years old” 可知，此处应填形容词最高级youngest，意为“最年轻的”。故填youngest。 28. _________ letting 【解析】空前为介词by，空处应用动名词形式。故填letting。 29. _____ set 【解析】句意为：他的电影中成立了一个团队。根据a team was和所给词可知，a team和set之间是被动关系，应用一般过去时的被动语态，结构为“was/were+过 去分词”，set的过去分词为set。故填set。 刷速度 返回目录 44 30. ______ from 【解析】句意为：它的目的是从人类中识别人工智能，以防止可能（产生）的问 题。根据“identify AI… humans to prevent possibleproblems”可知，此处 指从人类中识别人工智能，应用介词from。故填from。 知识拓展 prevent sb from doing sth意为“阻止某人做某事”。 31. __________ thinking 【解析】句意为：在电影中，团队抓住了孙悟空，认为他一定是人工智能，因为 他的超能力与人工智能能做的事情相匹配。根据“the team catches Sun Wukong… he must be AI”和句子结构可知，团队认为孙悟空是人工智能，the team与think之间是逻辑上的主动关系，此处应填现在分词。故填thinking。 刷速度 返回目录 45 32. ______________ characters’ 【解析】根据语境可知，此处应用复数名词所有格修饰faces，故填characters’。 33. ____________ successful 【解析】句意为：在制作这部成功的电影之前，他开始摆弄人工智能仅有两个月。 根据film可知空处应用形容词作定语。结合语境，故填successful。 知识拓展 success意为“成功”，作名词，其动词形式为succeed。 34. _____ and 【解析】句意为：你唯一需要的就是有一个强烈的表达自己的渴望，唯一的限制 就是你的想象力。前后分句之间为并列关系，用连词and。故填and。 刷速度 返回目录 46 情境6 Scent介绍了二维码的发明及其在中国的广泛应用，展示了科技如何让生活更加便捷。 任务六 从方框中选择合适的单词并用其适当形式填空（10分） 【2025广东汕头调研】#1 information an and be wide easy card second lose to invent year With the development of internet technology, the two-dimensional code （二维码） is very popular among us. It’s also called the quick response code （QR code）.This special code was 35. __________ by a Japanese company in 1994.It’s 36. ________ used in China now. invented widely 刷速度 返回目录 47 QR codes are used for keeping 37. _____________.They are also used for storing pictures. It is 38. ______ to use a QR code. If you want to get the information in it, just take out your phone and scan （扫描） the code with 39. ____ app, and then you can get it easily. Today, QR codes are popular in China. There 40. _____ QR codes everywhere. They are on TV 41. _____ the internet. People have printed QR codes on Chinese train tickets since 2010.When a machine scans the code on the ticket, information of the ticket owner and the train will appear on the screen in a few 42. _________. information easy an are and seconds 刷速度 返回目录 Recently, special cards with QR codes are introduced 43. ____ old people in some cities. If they get 44. ______, people can know their names, addresses and telephone numbers of their family members by scanning the codes on the cards. How convenient the QR code is!#1.1.4 语篇导读 本文主要讲述了二维码的发明以及在中国的使用。 to lost 刷速度 返回目录 35. __________ invented 【解析】句意为：这个特殊的代码是1994年由一家日本公司发明的。此处指二维 码的来源，invent符合语境，主语This special code和动词invent之间是被动关 系，结合was,故填invented。 36. ________ widely 【解析】句意为：它现在在中国被广泛使用。根据“It’s… used in China now.”可知，空处应使用副词修饰动词，wide的副词形式widely符合语境。故填 widely。 刷速度 返回目录 50 37. _____________ information 【解析】句意为：二维码被用于保存信息。根据“They are also used for storing pictures.”可知，二维码是用来保存信息和图片的，故填不可数名词 information。 38. ______ easy 【解析】根据“… and then you can get it easily”可知，二维码很容易使用， easy符合语境。is后加形容词作表语，故填easy。 刷速度 返回目录 51 39. ____ an 【解析】句意为：如果你想获得它里面的信息，只要拿出你的手机，用一个应用 程序扫码，然后你就可以很容易地得到它。根据“and scan the code with… app”可知，此处指一个应用程序，表泛指，且app的发音以元音音素开头，故填 an。 40. _____ are 【解析】句意为：到处都是二维码。根据“There… QR codes everywhere.”可 知，此处为there be句型，主语是复数，时态是一般现在时。故填are。 41. _____ and 【解析】句意为：它们在电视和因特网上。根据“They are on TV… the internet.”可知，此处表并列，应用连词and连接。故填and。 刷速度 返回目录 52 42. _________ seconds 【解析】句意为：当机器扫描车票上的码时，车票主人和火车的信息将在几秒钟 内出现在屏幕上。根据句意可知，此处表示在几秒之内,second意为“秒”；根据 a few可知要用second的复数形式，故填seconds。 43. ____ to 【解析】句意为：最近，在一些城市中，带有二维码的特殊卡片被介绍给老年人。 be introduced to意为“被介绍给”，为固定短语。故填to。 44. ______ lost 【解析】句意为：如果他们迷路了，人们可以通过扫描卡片上的码知道他们的名 字、地址和他们家庭成员的电话号码。固定词组get lost意为“迷路”，符合语 境，故填lost。 刷速度 返回目录 53 情境7 参加完活动，学生们写了一篇关于科技如何改变生活的短文。 任务七 书面表达（15分） 45.【2026辽宁沈阳调研】数字技术（digital technology）极大地改变了我们的生活。 学校正在开展“数字科技改变生活”主题演讲活动，请你以“Digital Technology: A Great Helper in My Life”为话题，写一篇发言稿。要点如下： （1）介绍数字技术在生活中的重要性； （2）具体描述数字技术在你学习、娱乐或生活等方面的应用； （3）你对数字科技未来的发展的期待。 刷速度 返回目录 54 注意： （1）词数80~100，开头和结尾已给出，不计入总词数； （2）可适当增加细节，以使行文连贯。 Dear students, Nowadays, digital technology plays a very important part in our lives.____ That’s all. Thank you! 刷速度 返回目录 55 【参考范文】 Dear students, Nowadays, digital technology plays a very important part in. .our lives. It makes our life more convenient and efficient. In my daily life, digital technology helps me a lot. For study, I often use learning apps to review lessons and watch online courses to improve my weak subjects. For entertainment, I enjoy listening to music and watching movies on my smartphone. Besides, my family often use mobile payment when shopping, which saves us much time. 刷速度 返回目录 56 I believe digital technology will bring us more surprises in the future. Maybe we can use VR to travel around the world at home. I’m looking forward to a smarter life with digital technology. That’s all. Thank you! 【解析】知识拓展 “play a role/part in…”意为“在……中扮演角色”。 刷速度 返回目录 $