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  • 1. (2020八下·玄武期末) 根据句子内容,从下面方框中选择适当的短语填空,使句子内容完整正确。
     

    stands for     takes time         as well        in time        in the way

        If you look at the top of your phone, you will usually see a title symbol that says 3G or 4G. The "G"  the generation (代) of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

        About 100 times faster than 4G networks, 5G will let people download and upload data (数据) faster than ever before. People can use it for many other things.

        For example, 5G will help to make self-driving cars safer. today's self-driving test cars have one problem—lag (延迟).When the car "sees" something , it sends this information to the data center and receives instructions.

        However, it  to send and receive this information. With this kind of lag, the care may crash because they don't receive instructions . With 5G, this lag will be greatly lowered, making the cars safer.

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