Unit 5 Great inventions单元限时检测-【初中必刷题】2025-2026学年八年级下册英语同步课件(冀教版·新教材)

该初中英语课件围绕八年级下册“Unit 5 Great inventions”主题，系统梳理发明相关词汇、语法及语篇技能，通过完形填空、短文填空、阅读理解等题型串联核心知识点，如动词辨析、词性转换、时态运用等，构建“词汇-语法-语篇”一体化知识网络。 其亮点在于采用“真题情境+分层训练”模式，如以河北调研题为例设计完形填空，培养学生语言理解与表达能力，阅读理解B篇通过AI与教师的讨论引导批判性思维，书面表达“设计小发明”鼓励创新，助力学生提升思维品质与学习能力，分层设计让不同水平学生高效巩固知识，也为教师提供精准复习教学支持。

英 语 八年级下册 JJ 1 2 3 Unit 5 Great inventions 4 单元限时检测 5 刷速度 6 速度 Ⅰ.完形填空（10分） 【2025河北承德调研】In recent years，with more and more cars on the road， flying robots are used to deliver mails. Flying robots can . .1. . mails to people’s houses. They don’t have to deal with heavy . .2. ..But they will spend too much time in returning. A research centre is trying to improve its flying robots with the . .3. . of homing pigeons. Homing pigeons are pigeons that are . .4. . trained to fly home from somewhere else. In tests,researchers . .5. . that homing pigeons were excellent. 刷速度 返回目录 7 They were . .6. . efficient than flying robots at returning to their home. So the research centre is trying to use a flying robot, together with a . .7. ., to deliver mails. After the flying robot finishes its tasks, it can . .8. . the homing pigeon back in the shortest possible time. Although it will cost more money to . .9. . homing pigeons, the research centre says that it can . .10. . time. And the time it saves will make up for the cost.#3 完形填空·语篇导读 本文主要介绍了利用信鸽帮助飞行机器人运送邮件的新方法。 刷速度 返回目录 1.( ) A.invite B.carry C.blow D.kick B 【解析】句意为:飞行机器人能将邮件运送到人们家中。invite意为“邀请”； carry意为“运送”；blow意为“吹”；kick意为“踢”。根据mails to people’s houses可知，此处表示“运送邮件”。故选B项。 知识拓展 invite sb to do sth 邀请某人做某事 刷速度 返回目录 9 2.( ) A.traffic B.railway C.fire D.pollution 【解析】traffic意为“交通”；railway意为“铁路”；fire意为“火”； pollution意为“污染”。根据flying robots和常识可知，此处指飞行机器人不 必应对交通拥堵问题。故选A项。 3.( ) A.help B.luck C.treat D.interest 【解析】句意为:一家研究中心正试图在信鸽的帮助下改进它的飞行机器人。with the help of意为“在……的帮助下”，符合语境。故选A项。 A A 刷速度 返回目录 4.( ) A.poorly B.carelessly C.specially D.musically 【解析】句意为:信鸽是专门被训练从别的地方飞回家的鸽子。根据语境可知，信 鸽应是被专门训练出来的。specially表示“专门地；特意”。故选C项。 5.( ) A.promised B.joked C.planned D.found 【解析】句意为:在测试中， 研究人员发现信鸽非常棒。根据that homing pigeons were excellent可知，此处属于发现的内容。故选D项。 C D 刷速度 返回目录 6.( ) A.less B.more C.better D.worse B 【解析】根据efficient than flying robots可知，此处指“更高效的”，应用 more。故选B项。 7.( ) A.homing pigeon B.big house C.leading person D.heavy car A 【解析】句意为:所以研究中心正尝试使用飞行机器人与信鸽一起运送信件。根据 上文可知，此处指与信鸽一起。故选A项。 8.( ) A.train B.knock C.follow D.steal C 【解析】句意为:飞行机器人完成任务之后，它可以跟随信鸽在可能的最短时间内 返回。根据上文提到的returning to their home可知，此处指“跟随信鸽返回”。 故选C项。 刷速度 返回目录 12 9.( ) A.dress B.paint C.clean D.raise D 【解析】句意为:尽管饲养信鸽会花费更多的钱，研究中心说这可以节省时间。根 据homing pigeons可知，此处应为饲养信鸽。故选D项。 10.( ) A.expect B.save C.kill D.show B 【解析】expect意为“期待”；save意为“节省”；kill意为“消磨（时间）”； show意为“展示”。根据the time it saves可知，此处表示“节省时间”。故选 B项。 知识拓展 be expected to do sth 有望做某事 刷速度 返回目录 13 Ⅱ.短文填空（15分） 阅读下面短文，在空白处填入一个适当的单词或填入括号内单词的正确 形式。 The sky train is a suspended monorail （单轨铁道） train in Wuhan and the track （轨道） is supported in the air above the train. As China’s 11. _______ （one） sky train for business, it uses new technologies and offers 270-degree views 12. ______ a big window on the floor. The whole design of the train is full of 13. _____________ （imagine）.The train’s design is 14. ________ （main） based on the topic of “Wings of Technology”.And the train uses “Technology Blue” 15. ____ its main colour. first with imagination mainly as 刷速度 返回目录 14 This tourist line will help realise the goal of 16. ____________ （develop） cultural tourism. The train runs 17. ____ a top speed of 60 kilometres per hour. In the first stage, two parts are used, and they can carry 220 people at 18. ______ （much）.Self-driving technology 19. _________ （use） on the train, too. It can carry passengers around on 20. _____ （it） own, without a driver. The tourist line of the first stage 21. ____ （be） about 10.5 kilometres, with 6 22. __________ （station）.In the future, people 23. _________ （be） able to ride the sky train to more places. developing at most is used its is stations will be 刷速度 返回目录 During the journeys on the sky train, people can look up at the blue sky and white clouds. They can see the changes of this zone from above. At 24. _____ same time, they can feel and enjoy the benefits of building an environmentally 25. __________ （friend） zone.#1.5 短文填空·语篇导读 本文主要介绍了武汉光谷空轨的相关情况。 the friendly 刷速度 返回目录 11. _______ first 【解析】句意为:作为中国第一趟商务空中列车，它采用新技术并提供270度的视 野，地板嵌有观景大窗。此处应用one的序数词first，表示“第一趟”。故填 first。 12. ______ with 【解析】根据a big window可知，此处表示“带有”。故填with。 13. _____________ imagination 【解析】句意为:列车的整体设计充满了想象力。根据语境可知，此处表示“想象 力”，of后应用名词，故填imagination，在此处作不可数名词。 刷速度 返回目录 17 14. ________ mainly 【解析】句意为:列车的设计主要以“科技之翼”为主题。分析句子结构可知，空 处填副词，修饰谓语based，main的副词形式为mainly，故填mainly。 15. ____ as 【解析】句意为:而且列车使用“科技蓝”作为主要颜色。as意为“作为”，符合 语境。故填as。 16. ____________ developing 【解析】介词of后填动词-ing形式。故填developing。 知识拓展 develop的名词形式为development，意为“发展”。 刷速度 返回目录 18 17. ____ at 【解析】at a speed of意为“以……的速度”，为固定短语。故填at。 18. ______ most 【解析】此处表示“它们最多可承载220人”。at most表示“最多”，为固定短 语。故填most。 19. _________ is used 【解析】句意为:自动驾驶技术也被用在列车上。根据上下文可知，本句时态是一 般现在时，且主语Self-driving technology与谓语动词use之间构成被动关系， 此处应用一般现在时的被动语态；主语是Self-driving technology，be应用is。 故填is used。 刷速度 返回目录 19 20. _____ its 【解析】句意为:它可以独自四处搭载乘客，不需要驾驶员。on one’s own意为 “独自；单独”，为固定短语。由主语It可知填its。 21. ____ is 【解析】根据语境可知，此处时态为一般现在时，主语为第三人称单数。故填is。 22. __________ stations 【解析】station意为“车站”，为可数名词，设空前有数字6。故填stations。 刷速度 返回目录 20 23. _________ will be 【解析】根据In the future可知，本句时态是一般将来时。故填will be。 24. _____ the 【解析】句意为:同时，他们可以感受并享受建设环境友好型区域的好处。at the same time表示“同时”，为固定短语。故填the。 25. __________ friendly 【解析】此处应用形容词修饰名词zone，environmentally friendly表示“环保 的”。故填friendly。 知识拓展 be friendly to sb 对某人友好 刷速度 返回目录 21 Ⅲ.阅读理解（16分） A 【2025河北衡水调研】#1.1 Silk The invention of silk happened thousands of years ago. Silk was widely used in a variety of business, including clothing, writing and fishing. Later, during the Han Dynasty, silk became more than just a product. It was used as a reward for a worthy common citizen or someone works for the government. 刷速度 返回目录 22 The compass The original compass was invented by the Chinese using a lodestone （天然磁石） which could turn freely and would point towards the north and south poles. During the Warring States Period, the Chinese found that the lodestone, which was first used as a divination （占卜） tool， could also be used to show directions for travellers. So the compass was invented. 续表 阅读A篇·语篇导读 本文主要介绍了丝绸和指南针这两项发明。 刷速度 返回目录 26. 选项选择 What was silk used for according to the passage?( ) C ①Writing. ②Making clothes. ③Exchanging products. ④Rewarding worthy people. A.②③④ B.①③④ C.①②④ D.①②③ 【解析】细节理解题。根据文本框第一栏可知，丝绸的用途不包括交换商品。故 选C项。 刷速度 返回目录 24 27. 图示理解 Which picture is a compass?( ) A A. B. C. D. 【解析】细节理解题。根据文本框第二栏可知，指南针会指着南极和北极。A项是 指南针，故选A项。 28. 文章出处 In which section of a newspaper can we read the passage?( ) D A.Man and nature. B.Sports and health. C.Interests and hobbies. D.Science and technology. 【解析】推理判断题。根据全文可知，本文介绍了两项发明，有可能出自报纸的 科技栏目。故选D项。 刷速度 返回目录 25 B 【2025河北张家口调研】The discussion about whether robots will take the place of teachers in the classroom is very hot. Some people think it is sure to happen in the next ten years. Others think that the value a good teacher brings, not only to the classroom setting, but for developing a child’s confidence and creativity outside lessons, cannot be easily taken the place of. AI is not new for us and is already being used successfully in many teaching and studying processes. In my opinion, AI will help kids to think in a freer and more creative way. Can AI possibly cut down the teaching work in the 刷速度 返回目录 26 future? Of course. Our teachers are always busy preparing for their lessons. Just imagine how happy they will be if they don’t have to correct hundreds of papers, but have this task or others done by machines, instead. They can use AI to collect information they need in class. However， most importantly， I do not believe AI will be able to imitate （模仿） human feelings, especially emotional intelligence. What makes learning unforgettable is shared experience， human communication，and healthy relationships. For example, experienced teachers can make a student feel better if he is under great stress. But no research shows that robots can imitate this well. 刷速度 返回目录 I also believe we need to develop our kids’ personalities and their abilities to not only make decisions but also make the right decisions.★ In short, AI has both its advantages and disadvantages. To what degree can teachers use AI in their classes?You can have all the information you want with the help of AI, but great teachers also need to depend on their own feelings.#1.4 阅读B篇·语篇导读 本文讨论了人工智能是否会取代教师。 刷速度 返回目录 29. 写作手法 How does the writer start the passage?( ) D A.By telling a story. B.By giving some suggestions. C.By pointing out his opinion. D.By comparing different opinions. 【解析】推理判断题。根据第一段的“Some people think… Others think…” 可知，作者通过对比不同的观点展开讨论。故选D项。 刷速度 返回目录 29 30.What is Paragraph 2 mainly about?( ) C A.The successful uses of AI in many fields. B.AI helps teachers to correct hundreds of papers. C.How helpful AI is to both students and teachers. D.Teachers are more important than AI in improving kids’ way of thinking. 【解析】主旨大意题。根据“AI is not new for us and is already being used successfully in many teaching and studying processes.”及下文可知， 第二段主要介绍了人工智能对学生及教师的帮助。故选C项。 刷速度 返回目录 30 31.In Paragraph 3, the example is used to ________.( ) B A.tell the history of AI B.support the writer’s opinion C.explain why AI develops rapidly D.remind readers of the importance of AI 【解析】推理判断题。根据第三段可知，作者举的机器人不能模仿教师情感，让 学生感觉好些的例子是为了支持自己的观点，作者不相信机器人能模仿人类的情 感。故选B项。 刷速度 返回目录 31 32.Which of the following can be put in “★”? ( ) C A.And then AI becomes an important part of life. B.So I tried to find some advantages of AI. C.To achieve this, depending only on AI is impossible. D.But I don’t believe we can use AI in a proper way. 【解析】推理判断题。根据“I also believe we need to develop our kids’ personalities and their abilities to not only make decisions but also make the right decisions.”可知，作者认为发展儿童的个性以及做正确决定的 能力是人工智能不能独立完成的。C项承接上文，符合语境。故选C项。 刷速度 返回目录 32 33. 篇章结构 What’s the structure of the passage?( ) B A. B. C. D. 【解析】推理判断题。通读全文可知，第一段引出话题；第二、三段分别介绍人 工智能的优势和局限性；第四段总结全文。故选B项。 刷速度 返回目录 33 Ⅳ.阅读表达（10分） Just days ahead of the 2024 fall term, a primary school in China’s Zhejiang Province had completed preparing a surprise for its students. When arriving back at school, students found their usual desks and chairs replaced by multi-functional desk-chair sets. They could be changed into comfortable beds by pulling two buttons. During the summer vacation, such sets were placed in all 16 classes of the school’s two grades. “With the help of the multi-functional desk-chair sets, students can take a good rest at noon and be ready for school activities in the afternoon”, said the 刷速度 返回目录 34 school’s headmaster. The local government had paid much attention to the students’ need to rest. To meet this need, 12 other schools were also chosen as test places to use multi-functional desk-chair sets. In the past, due to being unable to lie down when napping, many students ended up sleeping lightly for a short time on their desks. They felt tired and sleepy in the afternoon. This was bad for their health and study. As a result, multi-functional desk-chair sets were invented and introduced to schools. It was meant to improve students’ sleeping conditions and their health. Multi-functional desk-chair sets allowing students to lie down at noon have now become common among primary and secondary schools in China.#1.3 阅读表达·语篇导读 本文介绍了多功能桌椅的应用。 刷速度 返回目录 34.According to the first two paragraphs, how may the students feel when arriving back at school? __________________________ They may feel surprised. 【解析】根据第一段的“… had completed preparing a surprise for its students.”可知，学生们可能会感到惊讶。 35.How many schools were chosen to test the multi-functional desk-chair sets? _________________________ Thirteen/13（schools）. 【解析】根据a primary school及12 other schools were chosen as test places可知，一共有13家学校。 刷速度 返回目录 36 36.What time can students use the multi-functional desk-chair sets? __________ At noon. 【解析】根据students can take a good rest at noon可知，学生们在中午可以 使用多功能桌椅。 37.Why were the multi-functional desk-chair sets invented? _____________________________________________________________ To improve students’ sleeping conditions and their health. 【解析】根据“It was meant to improve students’ sleeping conditions and their health.”可知，多功能桌椅的发明是为了改善学生的睡眠及健康状况。 刷速度 返回目录 37 38.What do you think of the multi-functional desk-chair sets? _____________________________________________________________ I think they are good for the health and study of students. 【解析】本题答案不唯一，言之有理且无语法错误即可。 刷速度 返回目录 38 Ⅴ.书面表达（15分） 39.【2025河北承德调研】学校网站为鼓励同学们立大志、敢创新，努力成为有思 想、有见解的时代新人，号召同学们开动脑筋，设计一个新颖实用的小发明。请 以“My invention: ____”为题，用英语写一篇短文介绍你想进行的发明，内容必须 包括提示中的要点。 提示：（1）What do you want to invent? （2）Why do you want to invent…? （3）What are the advantages of your invention? 刷速度 返回目录 39 要求：（1）要点齐全，书写工整； （2）词数不少于80； （3）请勿在文中出现真实的个人信息。 ____ 刷速度 返回目录 40 【参考范文】 My Invention： The Eco-bottle Hello! I’m Li Hua.Today, I’d like to invent an eco-bottle—a smart water bottle that helps reduce plastic waste. Many students buy bottled water daily, creating too much trash.The eco-bottle has a built-in filter to clean tap water, and a digital screen that counts and shows how many plastic bottles you’ve saved.It reminds you to drink water and shows your environmental impact. There is no doubt that the eco-bottle is useful for us to reduce the usage of plastic bottles.In addition, with the eco-bottle, we can stay healthy and protect the earth at the same time! 刷速度 返回目录 41 【解析】知识拓展 remind sb to do sth 提醒某人做某事 刷速度 返回目录 42 $