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题型:阅读理解-单选 难度:0.85 引用次数:68 题号:20108544

Your Internet experience is terrible when the net speed is too slow—it takes so long to open a web page and the film you’re watching stops every few minutes. That can be very annoying. But it could be a thing of the past. In the near future, major telecom carriers will start to provide 5G services.

What is 5G? What difference will it really make to our lives? The “G” in “5G” refers to the generations of mobile network technologies. 1G let us talk to each other, 2G let us send messages, 3G gave us mobile data and the Internet, and 4G made all of these things faster. Now 5G promises much faster data download and upload speeds, and ore stable connections. This means that you will be able to download an entire HD movie in seconds and only experience a short delay between sending and receiving data. For example, when you have a video chat with your friend, there is generally a 200 milliseconds delay with 4G, but 5G will reduce the delay to 1 millisecond, which is almost real time.

5G will be able to improve many advanced technologies, such as driverless cars, wearable devices and entertainment. With a 5G network, the short delay in information exchange will allow driverless cars to run more safely, as they will be able to communicate in real time and avoid dangers. Meanwhile, 5G-enabled wearable devices will keep doctors updated on the health status of their patients, so doctors can give patients advice immediately if there’s something wrong. Besides, VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.

Though 5G will make our lives more convenient, it will not be perfect. For one thing, 5G will not “travel” far. On 4G networks, you can be 10 kilometres away from the nearest transmission base and barely lose signals. But 5G will only cover about 300 metres, meaning that we will need more transmitters so that we can get signals. And in order to use 5G, we will have to buy new products specifically designed for 5G that are currently expensive.

1. What does the “G” in “5G” refer to?
A.Games.B.Groups.C.Grades.D.Generations.
2. What is the main idea of Paragraph 3?
A.The advantages of 5G.B.The disadvantages of 5G.
C.The price of 5G products.D.The advanced technologies.
3. Which of the following is NOT true?
A.3G gave us mobile data and the Internet.B.5G will allow driverless cars to run more safely.
C.5G will cover about 300 metres to 1,000 metres.D.5G will make the VR games feel even more real.
4. Where is the article possibly from?
A.A diary.B.A magazine.C.A storybook.D.A novel.
【知识点】 说明文 5G技术

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