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）

第一节  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