Question

B. Choose the best words and complete the passage (选择最恰当的单词完成短文)

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 (发放商用牌照) for 5G networks on June 6, 2019. This means that China’s telecommunications (电信) 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 (传感器).

5G also makes the internet of things (IoT, 物联网) 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.B

2.C

3.D

4.A

5.D

6.C

【解析】

本文介绍了中国电信公司将能够为手机用户提供5G网络速度，并介绍了5G网速将带来的好处。

1.句意：你可能已经注意到，有时候，当你在玩手机游戏或视频通话时，画面会突然停住，因为网络速度太慢了。

small小的，low低的，fast快的，high高的。根据后文的“These annoying things”和“5G network speeds for mobile phone users.”可知，此处表示网速慢，故选B。

2.句意：这些恼人的事情很快就会成为过去，因为中国刚刚在2019年6月6日颁发了5G网络的商业牌照。

present现在的，future 将来的，past过去的，old年老的。根据后文的“This means that China’s telecommunications (电信) companies will be able to offer 5G network speeds for mobile phone users.”可知，中国电信公司将能够为手机用户提供5 G网络速度，因此这些缓慢的网速将成为过去。故选C。

3.句意：“5G”中的“G”代表一代(移动网络技术)。

goes to去，looks like看起来像，relies on依靠，stands for代表。结合句意，此处G表示代表了一代，故选D。

4.句意：由于速度的提高，创造和使用新技术将成为可能。

increase增加，competition 比赛，delay延期，practice练习。根据前文的“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.”可知，此处表示5G在速度上提高了。故选A。

5.句意：自动驾驶汽车将能够更安全地行驶。

widely广泛地，slowly缓慢地，carefully仔细地，safely安全地。根据后文的“because they can smoothly communicate with each other, traffic lights and road sensors (传感器).”可知，因为自动驾驶汽车可以顺利地互相交流，和交通灯和道路传感器交流，这样它们就更安全地行驶，故选D。

6.句意：例如，你的烤面包机可能会在你的闹钟响后自动开始为你做早餐。

At last 最后，In addition而且，For example 例如，In other words换句话说。根据前文的“IoT is a large network that connects nearly everything.”可知，此处列举5G用于物联网的一个例子，故选C。