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题型:阅读理解-单选 难度:0.65 引用次数:248 题号:14302978

When you do your homework, you may often meet some problems. How do you solve them? Linda, a middle school student, would take out her smartphone, open a special app(应用)and search the problem. Answers soon appear on the screen.

Nowadays, many students do homework with the help of the special apps like Linda. “It’s convenient. You don’ t have to go out or wait for a tutor(家庭教师) at home.” Linda said. “You also learn by seeing how others work them out. It’s very helpful and improves students’ abilities” said John, another student. He said it was especially true for new types of homework.

John’s Chinese teacher often asks students to give speeches on great writers. When it comes to John’s turn, he usually searches online, picks out certain stories and makes PPTs. “I’ve become skilled at finding information online and using Microsoft Office,” John said.

However, many people think this trend (趋势)also brings up problems. Some students just copy the answers online without thinking. They become lazy.

Head teacher Mr. Wang in Linda and John’s school thinks that knowing how to use the Internet is important. The key is to have good self-control. “No matter how difficult the problem is, think about it by yourself first. Remember not to depend on the Internet too much.” the teacher said. “Be sure to understand the reasons behind the answers, or you won’t make progress. If you don’t have confidence in your self-control, ask your parents for help.”

1. If the students have problems in their homework, how do they solve them?
A.take out their computerB.wait for a tutor
C.search a special appD.ask for their teacher
2. What is not the advantage of the app?
A.convenientB.helpfulC.quickD.true
3. What progress does John make?
A.He can search online.B.He can pick out certain stories
C.He can make PPTs.D.He can become skilled at finding information online
4. Why is Mr. Wang against using the app?
A.The students have good self-control.B.The students understand the reasons behind the answers.
C.The students copy the answers online without thinking.D.The students think about the problem by themselves first.
5. What can we learn from the last sentence?
A.Mr. Wang advised students not to depend on the apps too much when doing homework.
B.Mr. Wang advised students to keep away from the app.
C.Mr. Wang advised parents to help students with their homework.
D.Mr. Wang advised parents to increase students’ confidence in self-control.
【知识点】 信息技术 教育 说明文

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【推荐1】If you look at the top of your phone, you’ll usually see a small symbol that shows 3G or 4G. The “G” means the “generation ( 代 )” of your mobile network. But they will become history after 5G network fully arrives.

In recent years, China makes great achievement in 5G network. Now it’s making efforts to popularize the business use of 5G. Shanghai is the first city in China to start testing 5G networks. On March 30, 2019, Wu Qing, one of the leaders of Shanghai, made the first 5G video call with Huawei Mate Smartphone.

5G allows people download and upload data faster than ever before. It is 100 times faster than 4G mobile network. But 5G doesn’t just bring faster mobile Internet. People can use it for many other things as well. For example, 5G can make self­driving cars safer.

Today’s self­driving cars have one problem—time lag (滞后). When a self­driving car “sees” an obstacle (障碍物), it sends this information to data center and receives instructions. However, it takes time to do that. That’s the time lag. With this kind of lag, the car might have an accident because it doesn’t receive instructions in time. But with 5G, the self­driving car can receive instructions more quickly.

5G can also be used to power the Internet of Things (IOT). This refers to a large online network that connects all things and people. Fast Internet speeds will be the key to developing this technology. For example, with IOT, your smart fridge could order eggs online when it notices that there are no eggs left inside.

1. What is True about 5G?
A.5G can only make mobile Internet faster.B.The first city in China to do 5G test is Shanghai.
C.5G network has been fully used in China.D.5G network is 10 times faster than 3G network.
2. Why does the writer use self­driving cars as an example?
A.To explain how self­driving cars work.B.To show us how important self­driving cars are.
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A.In a science magazine.B.In a historical novel.C.In a fashion magazine.D.In a story book.
4. According to the story, the IOT is________.
A.a robot that can do houseworkB.a large online store where you can buy anything you want
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5. What can we learn from the passage?
A.China supports the development of 5G network.B.There are no differences between 3G and 4G.
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● Never agree to meet someone you met on the Internet without your parents’ permission.

Never meet anyone you met online alone.

● If something you see or read online makes you uncomfortable(不舒服), leave the site and tell a parent or teacher right away.

Remember-not everything you read on the Internet is true.

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【推荐3】You and I can tell one face from another, but can computers do the same with few mistakes? At an earlier time, many people thought it was impossible, but now, the development of technology has made it come true.

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