Question

【题目】 You might have noticed that sometimes, when you are playing mobile games, the picture suddenly freezes(卡顿)because the network speed is o slow. However, these annoying things will soon become a thing of the past, 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 companies will be able to offer 5G network speeds to users.

The "G" in "5G"stands for generation. IG 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 SG bring?

It will allow us to download an entire HD movie in seconds. The delay(延时)between sending and receiving data will be shortened. Now, 4Gtakes about 100 to 200 milliseconds, while humans have a reaction time of about 200 to 300 milliseconds. But 5G will get the delay down to I millisecond or less, which is almost real—time.

With the development of 5G, new kinds of technology will be created and used.

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 drive more safely because they can smoothly communicate with each other, traffic lights and road sensors.

5G networks will be powerful, but not perfect. They do have some disadvantages.

On one hand, 5G signals don't go very far. On 4G networks, you can be 10 kilometers away from the nearest transmission base(传送基站）and don't lose signal. But 5G maxes out at about 300 meters. On the other hand, 5G signals have a hard time going through walls and rains. This means we will need to build many small transmitters to make sure 5G signals can be received everywhere. Soon you may see small boxes on every street lamp and building.

【1】Why does the picture freeze when we are playing mobile games?

【2】What does "G" in"5G"stand for?

【3】How long will it take to download an entire HD movie with 5G?

【4】What is the fourth paragraph mainly about?

【5】What disadvantages do 5G networks have?

Answer 1

【答案】

【1】Because the network speed is too slow.

【2】It stands for generation. /The “G” in “5G” stands for generation.

【3】In seconds.

【4】With the development of 5G, new kinds of technology will be created and used.

【5】5G signals don’t go very far and they have a hard time going through walls and rains.

【解析】

这篇短文主要讲述了5G网络的发展，解决人们上网卡的问题，创造和使用新技术是可能，自动驾驶汽车将能更安全地行驶。5G技术使人们的生活更方便，但也有很多的缺点。

【1】

题干“为什么我们玩手机游戏时画面会冻结？”根据文中“ when you are playing mobile games, the picture suddenly freezes(卡顿)because the network speed is o slow.” 当你在玩手机游戏时，画面会突然冻结（卡顿），因为网络速度太慢。故答案为Because the network speed is too slow.

【2】

题干“5G”中的“G”代表什么？” 根据文中“The "G" in "5G"stands for generation.”可知，G代表“代”。故答案为It stands for generation. /The “G” in “5G” stands for generation

【3】

题干“用5G下载整个高清电影需要多长时间？” 它将允许我们在几秒钟内下载整个高清电影。根据文中“It will allow us to download an entire HD movie in seconds.” 它将允许我们在几秒钟内下载整个高清电影。故答案为In seconds.

【4】

题干“第四段主要讲什么？”根据文中“With the development of 5G, new kinds of technology will be created and used. ” 随着5G的发展，新的技术将被创造和使用。可知，第四段主要讲述了5G新的技术将被创造和使用。故答案为With the development of 5G, new kinds of technology will be created and used.

【5】

题干“5G网络有哪些缺点？” 根据文中“On one hand, 5G signals don't go very far.”及“On the other hand, 5G signals have a hard time going through walls and rains.”可知，5G信号走得不远，很难穿过墙壁和雨水。故答案为5G signals don’t go very far and they have a hard time going through walls and rains.