Unit 4 Digital life 单元培优测试 2026-2027学年外研版英语八年级上册

八年级英语（外研版）上册单元培优测试 Unit 4 Digital life （考试时间90分钟　满分100分） 注意事项 1. 本试卷不含听力部分，共六大题，满分100分，考试时间90分钟。 2. 答题前，请将姓名、班级、考号填写在试卷密封线内规定的位置。 3. 请用黑色字迹的钢笔或签字笔答题，答案必须写在答题区域内。 一、完形填空（共10小题，每小题1.5分，满分15分。） 阅读下面短文，从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。 My grandmother turned seventy last month, and my parents bought her a smart phone as a gift. For the first few days, she kept it in a drawer and (1)______ to touch it. "I am too old to learn this," she said. One evening, I sat down beside her and asked her (2)______ me how to make dumplings. She was surprised but happy. While we were working, I said, "Grandma, could you teach me something else too? I want to show you a (3)______ trick." I opened the camera app and asked her (4)______ a photo of the dumplings. She held the phone carefully, and when the picture appeared on the screen, her eyes lit up. "It is really there!" she said (5)______. Over the next two weeks, we had a small class every evening. I taught her how to make video calls, and she (6)______ me how to choose fresh vegetables. She learned quickly — much (7)______ than I had expected. Now she uses her phone every day. She sends me voice messages, shares photos of her garden, and even (8)______ a small group of neighbours how to shop online safely. "Digital tools are not only for young people," she told me (9)______. "They are a bridge. The problem is not age; it is whether someone is willing to (10)______ us patiently." Her words reminded me of something important: technology becomes truly useful only when we help each other to use it. 1. A. hoped B. agreed C. hurried D. refused 2. A. teach B. to teach C. teaching D. taught 3. A. difficult B. dangerous C. useful D. boring 4. A. take B. to take C. taking D. took 5. A. sadly B. angrily C. excitedly D. quietly 6. A. tells B. told C. is telling D. will tell 7. A. slower B. harder C. faster D. worse 8. A. asks B. shows C. lends D. borrows 9. A. in a hurry B. at a loss C. on purpose D. with a smile 10. A. watch B. test C. warn D. help 二、阅读理解 共15小题，每小题2分，满分30分。 阅读下列短文，从每小题所给的A、B、C、D四个选项中选出最佳选项。 A 阅读下面某校八年级学生“数字生活”问卷调查结果表，完成各小题。 Question Most common answer Percentage What do you use your phone for most? Looking up learning materials 42% How long do you use digital devices daily? About one hour 38% Who taught you to use digital tools? My parents or grandparents 45% Have you ever helped an adult with a digital problem? Yes, more than once 61% What worries you most online? Not knowing whether information is true 52% The survey was carried out among 600 Grade 8 students in March 2026. According to the school, the results will be used to design a new course on safe and healthy digital habits. 11. What do students use their phones for most? A. Looking up learning materials. B. Playing online games. C. Watching short videos. D. Chatting with strangers. 12. How long do most students use digital devices daily? A. About ten minutes. B. About half an hour. C. About one hour. D. More than three hours. 13. What will the school do with the survey results? A. They will design a new digital course. B. They will ban phones at school. C. They will write to the parents. D. They will buy new computers. B Ten years ago, most Chinese people paid for things with paper money. Today, more than 90 percent of everyday payments in cities are made with a phone. This change has happened so quickly that many visitors from other countries are surprised. Digital payment has clear advantages. First, it is fast: scanning a code takes less than two seconds, while counting coins may take half a minute. Second, it is safer: people no longer need to carry large amounts of cash, so the risk of losing money drops greatly. Third, it leaves a record. If you forget what you bought last week, you can simply look at your payment history. However, this convenience brings new questions. Some elderly people find it hard to learn the new system and feel left out. Others worry about privacy — every payment we make leaves information about where we were and what we bought. To solve the first problem, many cities have set up free classes in community centres to teach older people how to use smart phones. Some banks have also promised that cash will always be accepted. As for privacy, experts suggest that we should check the permissions of each app and never share our payment codes with strangers. "New technology should make life easier for everyone, not just for the young," one bank manager says. "That is the real test of a smart society." 14. What advantage of digital payment is mentioned in Paragraph 2? A. It costs more than cash. B. It is only used in big cities. C. It cannot be used by visitors. D. It takes less than two seconds to pay. 15. What can people do with the payment record? A. Avoid paying any money. B. Check what they bought before. C. Get a better price next time. D. Share it with their friends. 16. What problem do some elderly people face? A. The elderly may feel left out. B. Phones are too expensive. C. Codes are easy to remember. D. Banks refuse to accept cash. 17. What does the bank manager mean by his words? A. Cash will never be used again. B. Everyone should stop using apps. C. New technology should serve everyone. D. Only young people need digital skills. C Can a paper book and a tablet live in the same schoolbag? Teachers and researchers have discussed this question for years, and their findings may surprise you. Teachers have found that digital tools help students most in three areas. First, in subjects such as geography and biology, students who used interactive maps and 3D models understood difficult ideas more easily than those who only used textbooks. Second, students with learning difficulties benefited from the "read aloud" function, which let them listen to texts while reading. Third, students who were absent from school could follow lessons online and did not fall far behind. Yet there are also two dangers to watch out for. The first is distraction: when a lesson was delivered on a tablet, students were much more likely to switch to games or videos. The second is eye strain: students who spent more than three hours a day on screens reported far more headaches and dry eyes. The question is not whether to use digital tools, but how. A tablet is like a knife: it can help you prepare a meal or hurt your finger. What matters is the hand that holds it. A simple rule for schools may be this: use digital tools for tasks that paper cannot do well, such as showing how a volcano erupts, and keep paper for tasks that need deep, slow thinking, such as writing an essay. 18. In which subjects did digital tools help students most? A. In geography and biology. B. In history and art. C. In music and PE. D. In maths and physics. 19. How did the "read aloud" function help students? A. It made lessons much shorter. B. It replaced all textbooks. C. It reduced the homework load. D. It helped students listen while reading. 20. What is one danger of using tablets in class? A. Students may switch to games. B. Tablets are too heavy. C. Teachers refuse to use them. D. Paper books are more expensive. 21. What does the writer mean by comparing a tablet to a knife? A. Digital tools should be used for everything. B. Paper should be thrown away. C. The key is how we use digital tools. D. Screens are always harmful to eyes. D When Chen Hao moved to a new city in Grade Seven, he felt completely lost. He did not know anyone, and his new classmates already had their own groups. One afternoon, his mother suggested that he should join the school's photography club. "You can record what you see and share it with others," she said. Chen Hao was not sure, but he decided to try. The first meeting was difficult. The club leader asked every member to take ten photos of the school and post them on a shared page. Chen Hao walked around for an hour and took only three. When he uploaded them, he felt nervous about what others would say. The next morning, he found eleven comments under his photo of an old tree. "I never noticed this tree before!" one classmate wrote. "Where is it?" asked another. Chen Hao replied happily and, for the first time, had a real conversation with his new classmates. Over the following months, the shared page became a small community. Members posted pictures of morning fog, sports day, and the school canteen. They also began to help each other: one student showed Chen Hao how to edit photos, and he taught others how to find good angles. "I used to think a phone separates people," Chen Hao says now. "But this page brought us together. The screen is just a tool — what really matters is that you are willing to share a part of your life with others." By the end of the year, Chen Hao had more than two hundred photos in the album. "Each photo reminds me that I am no longer a stranger here," he says. 22. Why did Chen Hao feel lost when he moved to a new city? A. He had no phone with him. B. He failed an important exam. C. He lost his school bag. D. He did not know anyone there. 23. What did Chen Hao's mother suggest? A. Join the photography club. B. Take extra maths lessons. C. Move back to his old school. D. Stop using his phone. 24. How did Chen Hao feel when he uploaded his photos? A. He felt proud of his photos. B. He forgot to upload them. C. He felt nervous about others' comments. D. He was asked to leave the club. 25. What does Chen Hao's experience suggest? A. A phone always separates people. B. Sharing can bring people together. C. Photography is an easy hobby. D. New students should stay alone. 三、任务型阅读（共5小题，每小题3分，满分15分。） 阅读下面短文，根据短文内容完成各小题的任务。 Digital tools are now part of every student's life. But how can we use them well? Here are four rules that many teachers share with their classes. Rule one: decide before you start. Before opening a device, write down in one sentence what you want to finish — for example, "find three facts about volcanoes". This simple habit stops you from wandering from page to page. Rule two: keep devices out of your bedroom at night. Studies show that the light from screens makes it harder for the brain to fall asleep. Students who leave their phones in the living room often report falling asleep more easily. Rule three: check before you share. Not everything online is true. Before sending a piece of news to a group chat, ask yourself three questions: Who wrote it? When was it written? Can I find the same information on a reliable website? Rule four: use screens to create, not only to consume. Making a short video, designing a poster or writing a blog post turns you from a passive viewer into an active maker. Students who create content regularly say they feel more confident and learn faster. One way to think about digital tools is this: they are a little like a bicycle. They can take you somewhere wonderful — but only if you hold the handlebars yourself. 26. What should students do before opening a device? 27. Why should devices be kept out of the bedroom at night? 28. 根据短文内容，完成下面的用网四则梳理，每空不超过3个词。 Rule 1: decide your ①______ first. Rule 4: use screens to ②______, not only to consume. 29. What does the writer mean by comparing a digital tool to a bicycle? （回答不超过20词） 30. Which of the four rules do you think is the most useful for you? Why? （回答不超于20词） 四、补全对话（共5小题，每小题2分，满分10分。） 根据对话内容，从方框内所给的七个选项中选出五个恰当的句子补全对话，使对话意思完整、通顺。 A. What is the app for? B. How much did you pay for it? C. Who told you about it? D. I only use it for a short time each day. E. It is a digital tool for learning English. F. Would you like me to show you how it works? G. Do you use it every day? Lucy: Hi, Tom! You are looking at your phone again. What is that? Tom: It is a new app on my phone. It is a digital tool for learning English. Lucy: 31. ______ Tom: It helps me remember new words. Every morning it gives me ten words to review. Lucy: 32. ______ Tom: Yes, I do. I spend about fifteen minutes on it before breakfast. Lucy: 33. ______ Tom: My English teacher told us about it. Lucy: That is good. But don't you worry about spending too much time on screens? Tom: 34. ______ Lucy: You are right. Using it for a short time every day is fine. Tom: 35. ______ Lucy: Sure! I'd love to try it. Thank you. 五、语法填空（共10小题，每小题1.5分，满分15分。） 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Last month, our school invited a young engineer (36)______ (give) a talk about digital safety. She began by asking us (37)______ (raise) our hands if we had ever shared a photo online. Nearly everyone put up a hand. "Then let me ask you another question," she said. "Did you ask the people in the photo before you posted it?" The hall went (38)______ (sudden) quiet. Very few hands went up. "A photo is not just a picture," she explained. "It carries information about (39)______ (you), your friends and even your home address." She told us that a photo we post may allow strangers (40)______ (find) out where we live. Then she gave us three pieces of advice. First, check your privacy settings (41)______ (one) a month. Second, never share your password with anyone, even your best friend. Third, if someone online asks you to do something that makes you uncomfortable, tell an adult (42)______ (immediate). Her talk lasted only forty minutes, but it changed (43)______ (we) habits. That evening, I went through my old posts and deleted six photos. My mother said she was proud of (44)______ (I) for what I had done. "Technology is neither good nor bad," the engineer said at the end. "(45)______ matters is how we choose to use it." 六、书面表达（满分15分） 学校英文报 Digital Life 栏目正在举办以“My Digital Life”为题的征文活动。请你写一篇短文投稿，内容包括： 1. 你日常使用电子设备（手机、平板或电脑）主要做什么； 2. 你认为数字工具给你带来的一个好处和一个困扰； 3. 你就如何健康使用数字工具提出至少两条建议。 注意： 1. 词数80—100，开头已给出，不计入总词数； 2. 可适当增加细节，以使行文连贯； 3. 文中不得出现真实的姓名和校名。 My Digital Life Digital tools have become part of my daily life. __________________________ 参考答案与解析 一、完形填空 1. D 解析：考查动词辨析（态度）。由后句“我太老了，学不会这个”可知，奶奶起初拒绝碰这部手机。“希望”、“同意”、“匆忙”均与抗拒新事物的态度矛盾。 2. B 解析：考查非谓语动词（ask sb to do）。ask sb to do sth 意为“请求某人做某事”，用不定式作宾语补足语，为本单元核心语法。 3. C 解析：考查形容词辨析（评价）。作者要教奶奶用手机拍照，这是一项“有用的”小技巧。“困难的”、“危险的”、“无聊的”均与善意教学的语境不符。 4. B 解析：考查非谓语动词（ask sb to do）。ask sb to do sth 意为“请某人做某事”，用不定式作宾语补足语。 5. C 解析：考查副词辨析（情感方式）。照片出现在屏幕上，奶奶感到惊喜，excitedly 符合语境。“悲伤地”、“生气地”、“安静地”均与惊喜的心情相反。 6. B 解析：考查一般过去时。全文叙述过去两周发生的事，与前后句 taught、learned 时态一致，故用过去式 told。 7. C 解析：考查副词比较级（程度）。由前句 She learned quickly 可知，她学得比“我”预期的快得多。slower 与 worse 方向相反，harder 与“学得快”矛盾。 8. B 解析：考查动词辨析（行为）。奶奶主动教邻居如何安全网购，show sb how to do sth 意为“向某人演示如何做某事”。“询问”、“借出”、“借入”均不合语境。 9. D 解析：考查介词短语（神态）。奶奶说这番话时心情愉快，with a smile 意为“面带微笑”。“匆忙地”、“不知所措”、“故意地”均与温和的劝说语气不符。 10. D 解析：考查动词辨析（抽象行为）。全句意为“问题不在于年龄，而在于是否有人愿意耐心地帮助你”，与全文“互相帮助使用技术”的主旨一致。“观看”、“测试”、“警告”均偏离主题。 二、阅读理解 11. A 解析：表格信息检索题。第一行显示学生使用手机最常见的用途是“查找学习资料”，占 42%。 12. C 解析：细节题。第二行显示学生每日使用电子设备的时长最常见答案是 About one hour（约一小时）。 13. A 解析：细节判断题。表后说明调查结果将用于设计一门关于安全健康数字习惯的新课程，该项与之吻合。 14. D 解析：细节题。第二段指出数字支付的第一个优势是快捷——扫码不到两秒，而数硬币可能要半分钟。 15. B 解析：细节题。第二段第三点说明数字支付会留下记录，忘记上周买过什么时可以查看支付历史。 16. A 解析：细节题。第三段指出新问题之一是部分老年人难以学会新系统，感到被落下。 17. C 解析：引语理解题。银行经理强调新技术应让所有人生活更便利，而不只是年轻人，这是智慧社会真正的考验。 18. A 解析：细节题。第三段指出在地理、生物等学科中，使用互动地图与三维模型的学生更容易理解难点。 19. D 解析：细节题。第三段说明有学习困难的学生从“朗读”功能中受益，可以边读边听。 20. A 解析：细节题。第四段指出第一个危险是注意力分散——用平板上课时，学生更容易切换到游戏或视频。 21. C 解析：引语理解题。文中以刀为喻，强调关键不在是否使用数字工具，而在于如何使用，该项精准转述。 22. D 解析：细节题。首段说明陈昊转学到新城市后谁也不认识，同学们也早已有了各自的小圈子。 23. A 解析：细节题。第二段指出母亲建议他参加学校的摄影社，用照片记录所见并与他人分享。 24. C 解析：细节题。第三段说明他上传照片时很紧张，不知道别人会怎么评价。 25. B 解析：主旨理解题。陈昊总结说这个共享页面把大家聚到了一起，屏幕只是工具，真正重要的是愿意与他人分享生活，该项概括准确。 三、任务型阅读 26. Write down what they want to finish. 解析：细节查找题。第二段指出使用设备前应先写下一句“我想完成什么”。 27. Because screen light makes it harder to fall asleep. 解析：原因查找题。第三段说明屏幕光线会让大脑更难入睡。 28. ① goal　② create 解析：信息梳理题。第一空依据 decide before you start；第二空依据 use screens to create，每空不超过 3 词。 29. A digital tool is useful only when we control it ourselves. 解析：句意概括题。抓住“工具能否带你到好地方，取决于是否由你自己掌控”这一含义，限 20 词以内。 30. 示例：I think Rule two is the most useful for me, because I often play games in bed and feel tired the next morning. Leaving my phone outside will help me sleep better. 解析：开放性表达题。需明确选择一条规则并给出个人化理由，不少于 20 词且语言规范。 四、补全对话 31. A 解析：后句 Tom 回答“它帮我记新单词”，说明此处询问这个应用是做什么用的，该项精准对应。 32. G 解析：后句回答 Yes, I do，说明此处是一般疑问句；G 项“你每天都用吗”与后文“我每天早饭前用十五分钟”完全匹配。 33. C 解析：后句 Tom 回答“英语老师告诉我们的”，说明此处询问他是怎么知道这个应用的，该项“谁告诉你的”精准对应。 34. D 解析：面对 Lucy 对屏幕时间的担心，Tom 说明自己每天只用很短时间，该项与后句“每天用一小会儿没关系”呼应。 35. F 解析：后句 Lucy 回答 Sure! I'd love to try it，说明此处 Tom 提出为她演示用法，F 项完全匹配。B、E 两项为干扰项。 五、语法填空 36. to give 解析：考查非谓语动词。invite sb to do sth 意为“邀请某人做某事”，用不定式作宾语补足语。 37. to raise 解析：考查非谓语动词。ask sb to do sth 意为“请某人做某事”，用不定式作宾语补足语。 38. suddenly 解析：考查词性转换。修饰形容词 quiet 须用副词形式，sudden 的副词为 suddenly。 39. yourself 解析：考查反身代词。about yourself 意为“关于你自己”，与后面的 your friends、your home address 并列。 40. to find 解析：考查非谓语动词。allow sb to do sth 意为“允许某人做某事”，用不定式作宾语补足语。 41. once 解析：考查频度表达。once a month 意为“每月一次”，与 First 引领的第一条建议相配。 42. immediately 解析：考查词性转换。修饰动词 tell 须用副词形式，immediate 的副词为 immediately。 43. our 解析：考查代词。修饰名词 habits 须用形容词性物主代词，we 的形容词性物主代词为 our。 44. me 解析：考查代词。空处作介词 of 的宾语，须用宾格形式，I 的宾格为 me。 45. What 解析：考查主语从句。空处位于句首作主语，指代“真正重要的事情”，用 What 引导且首字母大写。 六、书面表达 参考范文 My Digital Life Digital tools have become part of my daily life. I usually use my tablet to look up learning materials and review English words. The biggest advantage is convenience. When I meet a new word, I can find its meaning in a few seconds. However, the screen also brings me trouble. Sometimes I open a game by accident and waste half an hour before I notice it. So I have made two rules for myself. First, I always write down what I want to finish before I turn on the device. Second, I keep my tablet outside my bedroom at night. 学科网（北京）股份有限公司 $