Unit 3 Our digital lives Section 2 同步练 2025-2026学年沪教版八年级英语上册

Unit 3 Our digital lives Section 2 同步练 班级：________ 姓名：________ 得分：________ 一、选词填空（共 10 小题，每小题 1 分，共 10 分） 从方框中选择合适的词或短语，并用其适当形式填空，每词限用一次。 big，smart，fast，interesting，powerful，good，early，famous，smooth，convenient， 1. The first computers were even ______ than cars in the 1940s. 2. Some AI computers are getting ______ than human beings in some tasks. 3. Modern computers run much ______ than those made 30 years ago. 4. I think science shows about AI are ______ than cartoon movies. 5. Deep Blue was one of the ______ chess computers in the world in 1997. 6. Ordinary people were ______ at playing chess than the first computers in the 1950s. 7. The ______ chess computers appeared in the 1950s. 8. The match between Deep Blue and the world champion was the ______ one in chess history. 9. Smart home technology makes our daily life much ______ than before. 10. With the help of smart traffic lights, the traffic in the city flows ______ than before. 二、适当形式填空（共 10 小题，每小题 1 分，共 10 分） 用括号内所给单词的适当形式填空。 1. This is one of the ______ (early) chess computers designed in the 1950s. 2. At that time, human players were ______ (good) than these early computers. 3. The 1997 match was the ______ (famous) chess game against a computer in history. 4. Back then, Deep Blue was ______ (powerful) chess computer in the world. 5. Now, an ordinary computer can beat ______ (good) human players easily. 6. Humans are still ______ (smart) than computers because we invented them. 7. Which do you think is ______ (convenient) to read, e-books or print books? 8. Is it ______ (safe) to make friends online or offline? 9. Computers today are much ______ (small) and ______ (good) than the first ones. 10. AI technology is getting ______ (popular) in our daily lives than before. 三、阅读理解 A（共 4 小题，每小题 2 分，共 8 分） 阅读下面短文，从 A、B、C、D 四个选项中选出最佳答案。 Computers: From the Past to the Future The first computers were built in the 1940s. They were huge machines—bigger than cars and even rooms! They weighed thousands of kilograms and could only do simple calculations. Back then, even ordinary people were better at solving problems than these early computers. By the 1970s, computers became smaller and faster. The first home computers appeared, though they were still much bigger than today’s laptops. In 1997, a computer called Deep Blue beat the world chess champion, Garry Kasparov. It was one of the most famous moments in AI history. Deep Blue was the most powerful chess computer in the world at that time. Today, computers are smaller, smarter and more convenient than ever. A smartphone in your pocket is more powerful than the biggest computers from the 1960s. AI computers can even beat humans in complex games like Go. However, humans are still smarter in many ways. We can think creatively, feel emotions and invent new things—things no computer can do yet. In the future, computers will get even faster and more powerful. They will help us solve big problems like climate change and diseases. But humans will always be the most important part of the digital world. 1. What do we know about the first computers in the 1940s? A. They were smaller than cars B. They were faster than today’s laptops C. They were huge and heavy D. They could beat humans at chess 2. Why was Deep Blue famous in 1997? A. It was the first home computer B. It beat the world chess champion C. It was the smallest computer in the world D. It could solve climate problems 3. According to the passage, how are humans still smarter than computers? A. They can do simple calculations faster B. They are smaller and lighter C. They can think creatively and invent new things D. They can beat computers at Go 4. Which of the following is true about computers over time? A. They have become bigger and slower B. They have become smaller, faster and more powerful C. They have replaced humans in all tasks D. They cannot help solve any big problems 四、完形填空（共 10 小题，每小题 1 分，共 10 分） 阅读下面短文，掌握其大意，然后从各题所给的 A、B、C、D 四个选项中选出最佳选项。 The Changing World of Computers Computers have changed a lot since they first appeared. The earliest computers were 1______ than cars. They were also much 2______ and slower than today’s computers. Even simple tasks took hours to finish. In the 1970s, home computers became popular. They were 3______ than the huge machines of the 1940s, but they were still not as 4______ as today’s laptops. Children loved playing simple games on them, though the graphics were not as 5______ as they are now. The biggest change came with the Internet. Computers became 6______ to use, and people could connect with others around the world. In 1997, Deep Blue beat the world chess champion. It was the 7______ moment in AI history up to that time. Today, smartphones are even 8______ than the most powerful computers from the 1990s. They are 9______ to carry and use anywhere. AI is getting smarter too, but humans are still the 10______ because we can invent new things. 1. A. bigger B. smaller C. lighter D. faster 2. A. faster B. heavier C. lighter D. smarter 3. A. bigger B. smaller C. heavier D. slower 4. A. powerful B. weak C. big D. cheap 5. A. interesting B. boring C. difficult D. simple 6. A. harder B. easier C. slower D. heavier 7. A. most famous B. earliest C. worst D. easiest 8. A. weaker B. less powerful C. more powerful D. slower 9. A. convenient B. difficult C. heavy D. slow 10. A. weaker B. smarter C. slower D. lazier 五、五选四（共 4 小题，每小题 2 分，共 8 分） 阅读下面短文，从方框内选择恰当的句子填入短文空白处，使短文内容完整、意思连贯。（选项中有一个多余选项） How to Choose the Right Digital Device Choosing a digital device can be difficult. Here are some tips to help you make the best choice. 1______ If you travel a lot, a laptop is better than a desktop computer because it is lighter and easier to carry. A smartphone is even more convenient for people who are always on the go. 2 ______If you need to do heavy tasks like editing videos, you will need a more powerful computer with a bigger memory. For simple tasks like writing emails, a smaller and cheaper device works fine. 3______ Some people find e-books more convenient to read, while others think print books are safer for their eyes. Think about what you will use the device for most of the time. 4______ The most expensive device is not always the best one. You should choose the one that fits your needs and budget. After all, the best device is the one that works for you. A. Think about the size and portability. B. Consider the power and performance you need. C. Think about how you will use the device. D. Choose the most expensive device available. E. Don’t forget to think about your budget. 参考答案 一、选词填空 1. bigger 2. smarter 3. faster 4. more interesting 5. most powerful 6. better 7. earliest 8. most famous 9. more convenient 10. more smoothly 二、适当形式填空 1. earliest 2. better 3. most famous 4. the most powerful 5. the best 6. smarter 7. more convenient 8. safer 9. smaller; better 10. more popular 三、阅读理解 A 1. C 2. B 3. C 4. B 四、完形填空 1. A 2. B 3. B 4. A 5. A 6.B 7. A 8. C 9. A 10. B 五、五选四 1. A 2. B 3. C 4. E 学科网（北京）股份有限公司 $