Unit3 单元练习2025-2026学年沪教版八年级英语上册

2025学年第一学期 8年级上 Unit 3 课堂限时练习 （练习时长：50分钟 试卷满分：65分） 一、语法选择（共15小题，每小题1分，满分15分） Nowadays, most middle school students can’t imagine 1 life without digital devices like smartphones or tablets. For many of us, these devices are not just tools but also 2 important part of daily life. Take 14-year-old Xiao Ming as an example. He used to check his phone every 10 minutes, even during classes. His teachers often reminded him that this habit was 3 for his study, but he didn’t listen. One day, Xiao Ming’s mother talked to him seriously. She said, “Digital devices can help you, but using them too much will make you lose focus.” Xiao Ming decided to try a “digital detox” (数字戒断). For the first three days, he felt 4 uncomfortable than before. He kept reaching for his phone, only to remember he had put it away. 5 he felt bored, he tried reading books or playing basketball with friends. After two weeks, Xiao Ming noticed great changes. He could finish his homework 6 faster than before because he wasn’t distracted by phone notifications. He also found that talking face-to-face with friends was 7 more enjoyable than chatting online. His eyes felt less tired, and he slept 8 at night. Now, Xiao Ming still uses his phone, but he knows how to control the time. He said, “I used to think I couldn’t live without my phone, but now I realize life can be more colorful 9 we don’t depend too much on digital devices.” Many experts say that developing good digital habits is important for teenagers. We should learn to use digital technology wisely, not let it control 10 . For example, we can set a time limit for using phones every day, or turn off non-important notifications. In this way, we can enjoy the benefits of digital life 11 avoid its negative effects. Last month, Xiao Ming’s class held a discussion about “How to Improve Digital Literacy”. All students shared 12 ideas. Some said they would check the reliability of online information before sharing it. Others planned to learn more about protecting personal data online. Xiao Ming suggested that everyone 13 make a “digital habit plan” and stick to it. As we enter a more digital world, it’s necessary for us to understand that digital devices are here to help, not to take over our lives. By balancing our time online and offline, we 14 have a healthier and happier life. And this is exactly what Xiao Ming 15 learned from his “digital detox” experience. 1. A. our B. your C. his D. their 2. A. a B. an C. the D. / 3. A. bad B. badly C. worse D. worst 4. A. much B. more C. most D. very 5. A. When B. However C. Because D. Unless 6. A. many B. more C. much D. most 7. A. very B. so C. too D. much 8. A. good B. better C. best D. well 9. A. because B. unless C. until D. if 10.A. we B. ours C. our D. us 11.A. but B. and C. or D. so 12.A. they B. them C. their D. theirs 13.A. should B. would C. will D. shall 14.A. need B. must C. can D. should 15.A. has B. have C. had D. is having 二、完形填空（共10小题，每小题1分，满分10分） In the past, people used words to express their ideas and feelings. With the development of science and technology, the Internet 16 . As a result, people had other 17 to share their lives with their friends. Nowadays, most people show their lives through all kinds of social software. On the Internet, people often use sounds, videos and words to 18 what they want to say. Some people don’t write anything. They only 19 photos to show what they are eating, drinking, listening to and buying. Someone says that social software 20 a personal TV station. People can choose a specific (特定的) person to know about his daily life. Besides, most social software is free. So people don’t have to spend any 21 putting their videos on the Internet. Some people become 22 because of their excellent short videos. Some people even have millions of fans. People’s lives become 23 because of the Internet. In the past, people had to walk a long way to get to the 24 in order to buy things. Now, people can 25 buy what they want with their mobile phones. Sometimes they buy something online in the morning and it arrives in the afternoon. It really saves much time. 16．A．closed B．ended C．changed D．appeared 17．A．subjects B．rules C．ways D．problems 18．A．imagine B．express C．stop D．forget 19．A．take B．buy C．sell D．touch 20．A．looks like B．lights up C．comes from D．puts up 21．A．time B．money C．energy D．electricity 22．A．lazy B．sad C．angry D．famous 23．A．simple B．convenient C．boring D．usual 24．A．hospital B．school C．market D．cinema 25．A．completely B．difficultly C．slowly D．easily 三、阅读（共两节，满分25分） 第1节 阅读理解（共15小题，每小题2分，满分20分） A What do you usually do in your free time? Last Sunday we had a survey. We asked 100 students about their free time activities. Here are the results. ①How often do you watch TV? ②How often do you surf the Internet? (Students’ number) ( )26. What is the survey about? A. Students' school life. B. Students’ free time activities. C. Students' dream jobs. D. Students' vacation plans. ( )27. Which activities does everybody take part in? A.①③ B.②④ C.①④ D.③④ ( )28. What can we know from this text? A. They did the survey last Saturday. B. Twenty-two students surf the Internet every day. C. 25% of the students exercise every day. D. Four students never do housework. B Imagine a picture like this: You wake up in the morning. A soft light turns on in your room. You go into the bathroom and the shower starts. The water is warm. After your shower, you go into the kitchen. Your favorite breakfast is already on the table. Welcome to your future house. Our houses in the future will be“smart”. Machines at home will be able to talk with each other and with you. For example, your fridge will know what you have in it and tell you what dishes you can make with the food. When you need more food, your fridge will tell you to buy it. This will be possible because of a special tool called RFID chips. They can store (储存) the information about all the food in your fridge. Our future houses will also be able to “think”. If you are tired of the color of your walls, you won't have to paint them again. The walls will be able to change colors because of a special kind of technology—OLED. In fact, OLED walls will be screens. A computer will join the walls and the other things, and this computer will rule your house. Your house will learn about your likes and dislikes（不喜欢）. It will then use that information to start the environment. It will also darken（使...变暗） the windows at night and lighten (点亮）them when it's time to wake up. What do you think of our future houses? ( )29. What does Paragraph（段落） 1 mainly talk about? A. What future houses will be like. B. Why you should wake up. C. What you will do in the morning. D. Where you have your breakfast. ( )30. What can RFID chips do? A. Make dishes. B. Buy food. C. Store information. D. Clean fridges. ( )31. What special technology will make walls change colours? A. LED. B. RFID. C. OLED. D. Remote controls. ( )32. What is the best title for the passage? A. A Special Tool B. Our Future Houses C. Helpful Computers D. A Smart Technology C Safer Internet Day is on the second Tuesday of February every year. On this day, people in about 170 countries take part in activities to try to make the Internet a safer place for children and young people. Safer Internet Day celebrates all the great things about being online. We can use the Internet to learn new things, video call family members who live far away, chat with friends, listen to music, watch videos and play games. 34.___________________________________________ For example, online bullying (霸凌) has recently become a hot topic. What is online bullying? It is when someone uses the Internet to make another person feel bad, often with bad messages on messaging apps or social media. Online bullying can also happen in games when players post unkind messages in the chat box. What do people usually do on Safer Internet Day in the UK? Children often do activities at school, at home and in other places. They do small tests, read stories, watch films, make posters and have discussions about how to stay safe online. Here are some tips on how to stay safe online: 1. If you see something online that makes you scared or worried, or if you know that someone is being bullied, tell a parent, a teacher, or other adults who you trust. If someone is unkind while you are playing a game, an adult can help you report that player. 2. Don’t meet people who you only know online. It’s possible that some people you meet online may make up stories（编造故事）. It can be dangerous to go to meet them in real life. 3. Don’t believe everything you read online! Not everything you read online is true. When you look for information, make sure that you use a website you can trust. And only share things with your friends if you know that they are true. ( ) 33．What’s the purpose of Safer Internet Day? A．To ask people to take part in the activities. B．To celebrate the things about being online. C．To make people know that the Internet is safer than before. D．To make the Internet a safer place for children and young people. ( ) 34．Choose the best sentence to fill in the blank in Paragraph 2. A．So it is safe when we use the Internet. B．What can we do about online bullying? C．That means we can do a lot of things online. D．But there can also be dangers when we are online. ( ) 35．What can we get from the three tips? A．We can use the Internet to learn new things. B．Online bullying only happens when you play games. C．If you are scared or worried, ask adults for help. D．Don’t send bad messages to the people you meet online. 第2节、 阅读填空（共5小题，每小题1分，共5分） Not many years ago, the world had no smartphones. No iPhones, no Androids. It was a simp-ler time with face-to-face talks, paper maps, and alarm clocks. 36. First, communication was different. People used pens to write letters. Getting a handwritten letter was exciting. Calling someone meant pressing real buttons and waiting. No emojis existed, so words alone showed feelings. Next, let's talk about travelling.37. Finding the right way was fun, but if lost, you asked a stranger for help. Getting directions was part of the adventure. 38. There was no Xiaohongshu or Bilibili. People read books, played games like chess, or went outside. “Angry birds” were just noisy animals in trees. “Tweeting” meant bird sounds, not sharing online. 1 学科网（北京）股份有限公司 People also had a different relationship with time. People wore watches and used wall clocks. 39. Important dates were marked on paper calendars 40. It was about being present, patient, and enjoying the moment. Maybe one day, we will look back on life before AI the same way. Until then, let's appreciate how far we've come. A. They set alarm clocks by hand before going to bed. B. The ways of having fun were also different. C. Let's take a time machine and travel back to that world. D. All in all, life before smartphones was not worse—— just different. E. Without apps like Baidu Maps, people used paper maps and compasses while travelling. 四．语篇填词 （共5小题，每小题1分，共5分） A technology 41.e________ came to our school and gave a talk yesterday. He 42.w_______ us not to download unknown software on our laptops, as it may make the devices slow or even steal our information. Besides, looking at the43. s________ for a long time is not a good idea for teenagers. He also shared some tips to keep laptops running 44.s__________. For example, we should clean up old files every week and charge the battery properly. Many students asked him questions, and he gave 45.p________ answers to all of them. After the talk, I learned that taking good care of a laptop is not hard. I will follow his advice to make my laptop work better for a long time. 5、 完成句子（共5小题，每小题2分，共10分） 46.数字技术改变了我们的工作和学习方式。 Digital technology has _________ _________ _________ we work and _________. 47.电脑可以连接到全球的网络，获取最新信息。 Computers can ________ ________ ________the global network to get the latest information. 48.移动支付让在线购物变得更快更安全。 __________ ___________ makes online shopping __________ and __________. 49.虽然网上交流很方便，但亲自见面能更好地表达情感。 Online communication is convenient, but meeting _______ _______ can better express feelings. 50.对青少年来说，提高数字素养很重要，因为它能帮助我们辨别网上的虚假信息。 teenagers _________ improve their digital literacy, because it can help us tell fake information online. $