Question

B. Choose the best words and complete the passage (選擇最恰當(dāng)?shù)膯卧~完成短文)

You might have noticed that sometimes, when you’re playing mobile games or taking a video call, the picture suddenly freezes because the network speed is too ________. When you try to download a movie on your phone, it seems to take forever.

These annoying things will soon become a thing of the ________, as China just issued commercial licenses (發(fā)放商用牌照) for 5G networks on June 6, 2019. This means that China’s telecommunications (電信) companies will be able to offer 5G network speeds for mobile phone users.

The “G” in “5G” ________ generation (of mobile network technology). 1G let us talk to each other. 2G let us send messages. 3G gave us mobile data and internet, and 4G made all of these things faster. So what will 5G bring?

First of all, 5G is so fast that it will allow you to download an entire HD movie in seconds. The delay between sending and receiving data will be shortened. Now 4G takes about 100 to 200 milliseconds (毫秒), while humans have a reaction time of about 200 to 300 milliseconds. But 5G will get the delay down to 1 millisecond or less, which is almost real-time.

Because of this ________ in speed, it will be possible to create and use new kinds of technology. Robots will be used to do operations because doctors will be able to control them from somewhere else without any delay. Self-driving cars will be able to run more ________ because they can smoothly communicate with each other, traffic lights and road sensors (傳感器).

5G also makes the internet of things (IoT, 物聯(lián)網(wǎng)) possible. IoT is a large network that connects nearly everything. ________, your toaster might be able to automatically start making your breakfast after your alarm clock rings.

All in all, 5G will shape every type of technology that it touches. And you won’t have to wait too long for that to happen.

1.A.small B.low C.fast D.high

2.A.present B.future C.past D.old

3.A.goes to B.looks like C.relies on D.stands for

4.A.increase B.competition C.delay D.practice

5.A.widely B.slowly C.carefully D.safely

6.A.At last B.In addition C.For example D.In other words

Answer 1