Unit 5 C Water is life单元限时检测-【初中必刷题】2025-2026学年七年级下册英语同步课件(沪教版·新教材)

该初中英语单元复习课件围绕“Water is life”主题，系统整合水资源重要性、节水方法及相关语篇应用等核心知识，通过完形填空（世界水日演讲）、阅读理解（科学实验与AI用水）、书面表达（节水活动回信）等题型，从词汇辨析、语法应用到语篇理解与表达，构建连贯的语言知识网络。 其亮点在于融合语言能力与思维品质培养，如完形填空通过上下文逻辑训练语言理解能力，科学实验阅读引导学生分析现象背后原理，书面表达任务结合学校节水活动设计，提升语言表达与问题解决能力。知识拓展解析辅助词汇语法巩固，分层题型设计满足不同学生需求，助力教师精准把握学情，有效提升复习效率。

英 语 七年级下册 HN 1 2 3 Unit 5 Water is life 4 C 单元限时检测 5 刷速度 6 速度 Ⅰ.完形填空（10分） 素材话题：世界水日#1 【2025陕西西安模拟】Good morning, everyone! My name is Ethan. It’s my great honour to . .1. . a speech here. It is about World Water Day. I would like to share my ideas about “Saving . .2. .”. All people, animals, and plants need . .3. . and clean water to live. It’s hard to imagine life without water. But not all people are so lucky to have enough clean drinking water. So everyone should play a part in helping to save water. 刷速度 返回目录 7 You might think, “What can I do?” Don’t worry. Here are . .4. . things we can do. Tell others to save water. Talk to your family and . .5. .! Let them know why water is important. The more people care, the more we can work together. Turn off the tap while brushing teeth. Do you leave the tap running while brushing teeth? . .6. . that! Turn it off when you’re not using it. You’ll . .7. . a lot of water! 刷速度 返回目录 Have showers instead of baths to save more water. Showers use . .8. . water than baths. A short shower only needs a little water. What’s more, showers are quick and fun! Reuse water for plants or gardens. Use the water from washing fruit or vegetables to water your . .9. ..Even the cold water that runs before your shower heats up can be caught in a bucket and used to water flowers. These small changes may make a . .10. . to the world. Let’s work together to save water—for us, for nature, and for the world! That’s all and thank you for listening.#1.7.3 完形填空·语篇导读 本文主要是一个有关世界水日和节约用水的演讲。 刷速度 返回目录 1.( ) A.review B.show C.give D.listen C 【解析】固定短语give a speech意为“发表演讲”，故选C项。 2.( ) A.Water B.Animals C.Food D.Earth A 【解析】根据“It is about World Water Day.”可知此处指节约用水，故选A项。 3.( ) A.dirty B.fresh C.salty D.hot B 【解析】根据“All people, animals, and plants need… and clean water to live.”可知，此处指新鲜干净的水，故选B项。 刷速度 返回目录 10 4.( ) A.difficult B.tiring C.simple D.boring C 【解析】根据“Don’t worry.Here are… things we can do.”并结合下文可知， 此处指简单的事情，故选C项。 5.( ) A.sisters B.fathers C.mothers D.friends D 【解析】根据空前的your family并结合选项可知，此处指朋友，故选D项。 6.( ) A.Stop B.Leave C.Keep D.Remember A 【解析】根据“Do you leave the tap running while brushing teeth… that!” 可知，此处表示应停止刷牙时让水龙头开着的浪费行为，故选A项。 刷速度 返回目录 11 7.( ) A.waste B.save C.use D.find B 【解析】根据“Turn it off when you’re not using it.You’ll… a lot of water!”可知，关水龙头是节水措施，故选B项。 8.( ) A.less B.more C.little D.fewer A 【解析】根据“Showers use… water than baths.”可知淋浴更省水，此处修饰 不可数名词，且结合than可知应用比较级，故选A项。 9.( ) A.animals B.plants C.hands D.cars B 【解析】根据“Use the water from washing fruit or vegetables to water your…”可知，此处提倡用洗水果或蔬菜的水浇灌植物，故选B项。 10.( ) A.difference B.noise C.mistake D.decision A 【解析】固定短语make a difference意为“产生影响”，符合语境。故选A项。 刷速度 返回目录 12 Ⅱ.阅读理解（14分） A 【2024辽宁沈阳期末】Hi, young scientists! Are you ready for some fun with science? Doing science experiments is so interesting and it helps us question what we learn, think deeply, and create new ideas. Here is an easy and fun experiment about air pressure （压力） that you can do at home or school. Let’s have a try! What do we need? ①a glass ②a piece of cardboard （硬纸板） 刷速度 返回目录 13 ③some clean water How can we do it? Step One: Fill a glass with water. Step Two: Put a piece of cardboard over the glass. Step Three: Turn the glass over as quickly as possible. Step Four: Hold the cardboard for a few seconds. Step Five: Remove （移走） your hand from the underneath of the glass. 刷速度 返回目录 14 What will happen? The glass of water is upside down, but the water stays in the glass. Why does this happen? This is because air pressure pushes the cardboard onto the glass. There is more air outside the glass than inside, so there is more air pressure outside than inside. 阅读A篇·语篇导读 本文介绍了一个有趣的实验。 刷速度 返回目录 15 11.How many kinds of things do you need to do this experiment?( ) B A.Two. B.Three. C.Four. D.Five. 【解析】细节理解题。根据“What do we need?”下面的“①a glass ②a piece of cardboard③some clean water”可知，一共需要三种材料。故选B项。 知识拓展 need作实义动词时意为“需要”，后加名词、代词或动词不定式结构作宾语。 need作情态动词时意为“需要”，后加动词原形。need作名词时意为“需要”， 可用于短语in need of中。 刷速度 返回目录 16 12.What is the second step of the experiment?( ) A A.Putting a piece of cardboard over the glass. B.Turning the glass over as quickly as possible. C.Holding the cardboard for a while. D.Removing your hand from the underneath of the glass. 【解析】细节理解题。根据“How can we do it?”下面的“Step Two: Put a piece of cardboard over the glass.”可知，第二步是在玻璃杯上盖一块硬纸 板。故选A项。 刷速度 返回目录 17 13.What makes the piece of cardboard onto the glass?( ) B A.The hand. B.Air pressure. C.Clear water. D.The glass. 【解析】细节理解题。根据最后一段中的“This is because air pressure pushes the cardboard onto the glass.”可知，大气压将硬纸板推到玻璃杯上。 故选B项。 刷速度 返回目录 18 B 【2024江苏南京调研】Artificial intelligence （AI） can now do amazing things. ChatGPT is an AI tool that can answer questions, tell stories, and do much more. But it’s very “thirsty”, said a new study. When ChatGPT works, its “home”—data （数据） centres around the world—gets very hot. Workers then have to use water to cool them down. Cold water goes into pipes near the computers at these centres. Because the computers are very hot, the water turns into vapour and goes into the air. The water needs to be super clean. If they use seawater, it can eat away the pipes. 刷速度 返回目录 19 If you ask ChatGPT 20 to 50 questions, it needs to “drink” a 500-millilitre bottle of water. When people trained ChatGPT, it used 700,000 litres of water, said the study. This is the amount that is needed to make about 370 cars. ChatGPT is not the only one that needs data centres. Everything you do with computers needs data centres to work. There are more than 8,000 data centres in the world. The number is still growing. If AI keeps using a lot of water, we may have to “fight” with AI for water. AI uses a lot of water to “grow”.Many people may not have enough water to drink because of water shortage. However, we need better AI to have a better future. Should we rethink the use of AI?#1.5 阅读B篇·语篇导读 本文主要介绍了ChatGPT在运行时会消耗大量的水，这引发了 对于人工智能发展与水资源短缺之间的关系的思考。 刷速度 返回目录 14.What is the meaning of “thirsty” in this article?( ) B A.ChatGPT can answer many questions at the same time. B.ChatGPT needs some water while working. C.ChatGPT keeps learning to answer many questions. D.ChatGPT works just like drinking water. 【解析】词义猜测题。根据“When ChatGPT works, its ‘home’—data centres around the world—gets very hot.Workers then have to use water to cool them down.”可知，这里的thirsty指的是ChatGPT在工作时需要水，故 选B项。 刷速度 返回目录 21 15.Why can’t people use seawater to cool down data centres?( ) C A.Because seawater is too clean to cool down the centres. B.Because it is hard for seawater to become vapour. C.Because seawater is bad for the pipes. D.Because animals in seawater may eat the pipes. 【解析】细节理解题。根据“The water needs to be super clean.If they use seawater, it can eat away the pipes.”可知海水会腐蚀管道。故选C项。 刷速度 返回目录 22 16. 选项选择 How does the writer show the idea in Paragraph 3?( ) a. By comparing one thing with another. b. By thinking of a thing as a person. c. By drawing a conclusion （得出结论） from the different points. d. By giving numbers to make the point clear. B A.abc B.abd C.acd D.bcd 【解析】推理判断题。根据第三段内容可知，作者将ChatGPT用的水与制造汽车用 的水进行比较，并运用拟人的手法，阐述其需要“喝”水，而且通过列出具体的 数字来阐明观点。故选B项。 刷速度 返回目录 23 17.What can we learn from the last paragraph?( ) A A.There may be competition （竞争） for water use between AI and humans. B.AI may fight against animals to get more water in the future. C.AI will use less water some day to let people have enough water. D.People should stop using the data centres in order to save water. 【解析】主旨大意题。根据“AI uses a lot of water to ‘grow’.Many people may not have enough water to drink because of water shortage.However, we need better AI to have a better future.”可知，人 工智能和人类之间可能会在水资源的使用上产生竞争，故选A项。 刷速度 返回目录 24 Ⅲ.阅读还原（10分） 【2024广东广州期末·改编】For most visitors, no other tourist city is quite like Venice. They love its art museums, beautiful traditional buildings and squares. They also enjoy sitting in cafés and talking, or going to restaurants and tasting the delicious Italian food in the city.18.___ Venice is a city on the water.19.___ Canals （运河） run through the city like streets, so people usually travel around it by boat every day. For most visitors, their trips won’t be complete without a boat trip through the canals. D C 刷速度 返回目录 25 20.___ These years, it’s slowly going down into the water. When high tides （潮汐） come, the water from the ocean comes into the city. It happens more often, so Venice is lower than it was in the past.21.___ Luckily, engineers are working on a project to save Venice.22.___ It is difficult and expensive to do that. But if it works, Venice’s beautiful buildings will be safe, and the city will still be there for people to visit long into the future.#1.3 E A B 刷速度 返回目录 A.This is also destroying the old buildings in the city. B.They’re putting 78 big gates to stop the water from coming in. C.You can find over 117 islands and more than 400 bridges in it. D.But what makes Venice a really special place is the water. E.However, Venice is in danger because of its water. F.Venice is famous throughout the world, and people also call it the “Floating City”. 阅读还原·语篇导读 本文介绍了威尼斯的相关信息。 刷速度 返回目录 27 18. ___ D 【解析】根据下文“Venice is a city on the water.”可知，选项D（但使威尼 斯变成一个很特别的地方的是水。）符合语境，用于引出下文。故选D项。 19. ___ C 【解析】根据上下文可知，此处应是关于它是水上城市的介绍，选项C符合语境。 故选C项。 20. ___ E 【解析】根据“These years, it’s slowly going down into the water.”可 知，此处讲述的是水带来的危险，选项E（然而，威尼斯因为水处于危险中。）符 合语境。故选E项。 刷速度 返回目录 28 21. ___ A 【解析】根据上文可知，选项A（这也正在摧毁城市里的古老建筑。）符合语境。 故选A项。 22. ___ B 【解析】根据“Luckily, engineers are working on a project to save Venice.”可知，选项B（他们正在安装 78 个大闸门来阻止水流入。）符合语境。 故选B项。 刷速度 返回目录 29 Ⅳ.语篇填词（5分） Water is very important to us and we can’t live 23.w ________it. We usually get drinking water from rivers instead of oceans, because river water is 24.f ______ water. Then we build reservoirs to make it clean and safe to drink. Also, we can use water to produce electricity. Usually we get electrical power by burning coal （煤）.This produces harmful 25.g __________ and pollutes the air. When we use water, it is cleaner. There is not enough water on Earth. So we should 26.s _____ water in our daily lives, such as reusing water. We can do this 27.a ______ or we can work together. Let’s start from small things! ithout resh as（es） ave lone 语篇填词·语篇导读 本文介绍了水资源的重要性，并呼吁我们要节约用水。 刷速度 返回目录 30 23. _________ without 【解析】句意为：水对我们很重要，没有它我们不能生存。根据“Water is very important to us and we can’t live… it.”可知没有水，人类就无法生存； without意为“没有”，符合语境，故填without。 24. _______ fresh 【解析】句意为：我们通常从河流而不是海洋中获取饮用水，因为河水是淡水。 fresh water意为“淡水”，符合语境。故填fresh。 25. ___________ gas（es） 【解析】根据“Usually we get electrical power by burning coal.”和 pollutes the air可知此处表示产生有害气体。gas意为“气体”，既可作可数名 词，又可作不可数名词，空前无限定词，故填gas（es）。 刷速度 返回目录 31 26. ______ save 【解析】句意为：所以我们应该在我们的日常生活中节约用水，比如重复使用水。 根据such as reusing water可知此处表示节约用水，save意为“节约”；空前有 情态动词，此处用动词原形，故填save。 知识拓展 save one’s life挽救某人的性命 27. _______ alone 【解析】根据or we can work together和首字母提示可知，alone（独自）符合 语境，故填alone。 刷速度 返回目录 32 Ⅴ.书面表达（25分） 28.【2024广东深圳期末】假定你是李华，你的外国笔友Jason来信说，他想知道你 的学校平时是如何鼓励学生节约用水的，请你写一封回信。 内容包括：（1）学校的做法： ①举办节水知识讲座； ②举办节水海报设计比赛； ③…… （2）询问Jason所在的学校是否也有类似活动。 刷速度 返回目录 33 要求：（1）90词左右，开头及结尾已给出，不计入总词数； （2） 文中不得出现真实姓名和校名； （3） 可适当增加细节，以使条理清楚、行文连贯； （4） 标点正确，书面整洁。 提示词汇：讲座lecture;海报设计竞赛poster design competition 刷速度 返回目录 34 Dear Jason, I am glad that you’re interested in how my school encourages students to save water. _______________________________________ Best wishes, Li Hua 刷速度 返回目录 35 【参考范文】 Dear Jason, I am glad that you’re interested in how my school encourages students to save water.I’ll tell you something about it.There are different activities about water saving.We give lectures, telling people about the importance of water.We hold poster design competitions.Some teachers and students make posters and put them up in the school and neighbourhood.They tell us what we should do to save water.Lots of students put on short plays.They show us wasting water is 刷速度 返回目录 36 bad for humans.All these activities are helpful.More and more people know the importance of water and begin to save it. Could you tell me something about how your school encourages students to save water? Best wishes, Li Hua 【解析】知识拓展 encourage sb to do sth鼓励某人做某事 刷速度 返回目录 $