Question

    If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G.1. But these symbols will become things of the past after 5G networks fully arrive.

On March 30, 2019, Shanghai vice mayor Wu Qing made the first 5G video call on a Huawei Mate X Smartphone.2.

About 100 times faster than 4G networks, 5G will let people download(下载) and upload data (数据) faster than ever before. But 5G won’t just bring faster mobile internet.3.

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” an obstacle(障碍物), it sends this information to a data center and receives instructions.4.With this kind of lag, the cars might hit each other because they don’t receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer.

5G could also be used to help the internet of things(IoT). IoT is a large online network that connects all things and people. Fast internet speeds will be the key to developing this technology. 5.For example, with IoT, your refrigerator could automatically(自动地) place an order online for eggs when it finds that there are no eggs left inside.

A.Shanghai has also become the first city in China to start testing 5G networks.

B.5G will help us buy eggs quickly.

C.People can use it for many other things as well.

D.However, it takes time to send and receive this information.

E.The “G” is the “generation(代)” of your mobile network.

F.The IoT could be used in a lot of ways.

G.5G networks are much faster than 4G or 3G.

Answer

1.E

2.A

3.C

4.D

5.F

【解析】

这是一篇说明文，文章介绍5G网络的开始测试和使用，以及5G网络的优势和用途。

1.

句意：G代表的是你的手机网络的“代”。

根据前一句的“3G or 4G”可知此处介绍G代表的含义。故选E。

2.

句意：上海也成为中国第一个开始测试5G网络的城市。

根据“Shanghai vice mayor Wu Qing made the first 5G video call on a Huawei Mate X Smartphone”可知此处介绍上海开始测试5G的情况。故选A。

3.

句意：人们也可以用它来做其他的很多事情。

根据前文“5G will let people download and upload data faster than ever before. But 5G won’t just bring faster mobile internet”可知使用5G下载和上传数据比以前更快，但是5G不仅仅是带来更快地手机网络，此处表达还可以做别的其他事。故选C。

4.

句意：然而，需要花时间来传送和收到这条信息。

根据前文“it sends this information to a data center and receives instructions”以及下一句“With this kind of lag”可知此处讲述传送信息和收信息有延迟，需要花时间。故选D。

5.

句意：物联网可以有很多方式被使用。

根据“For example, with IoT, your refrigerator could automatically place an order online for eggs when it finds that there are no eggs left inside”后文举一个例子讲述物联网使用的方式。故选F。