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  • 1. (2022·四川模拟) 根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。

    Do you know 5G? It is the fifth generation of mobile network technology. These new networks are coming.

    China just issued commercial licenses(发放商用牌照) for 5G on June 6. This means that China's telecom companies were soon able to offer 5G networks for mobile phone users.

    Each mobile network generation is faster and more powerful that the one before it. 1G let us talk to each other. . 3G gave us data and the Internet. And 4G made all of these things faster. What's special about 5G?

    5G has a very short delay between sending and receiving information. Now, 4G takes about 100 to 200 milliseconds to send and receive date. .

    This big change will not only make our mobile Internet faster, but also deeply change our lives. Read on to find out how.

    5G+entertainment

    5G networks are about 100 times faster than 4G. This means you can download a movie in seconds using 5G.

    . The short delay of 5G will make the games feel even more real.

    5G+transportation

    . These cars can send signals to each other. They also talk to traffic lights and road sensors.5G will allow cars to react even faster than human drivers.

    5G+smart homes

    5G also makes the Internet of things possible. . Smart homes are part of it.

    For example, your toaster can automatically start making breakfast after your alarm rings. And if its sensor feels the air becoming dry, a smart sprinkler could water your plants by itself.

    A. Also, virtual reality (VR) games will become more popular with 5G.

    B.5G will also bring us safer self-driving cars.

    C. 2G let us send messages.

    D. Internet of things is a large network that connects everything to the Internet.

    E. But 5G will get it down to 1 millisecond or less—this is almost real-time.

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