Your Internet experience is ruined（破坏；毁掉） when the net speed is too slow — it takes so long to open a web page and the reality show you're watching stops every few minutes.That can be very annoying.But it could be a thing of the past.On June 3，2019，the Ministry of Industry and Information Technology announced that China's major telecom carriers （电信公司） would start to provide 5 G services.
What is 5 G？
The "G" in "5 G" refers to the generations of mobile network technologies.1 G let us talk to each other，2 G let us send messages，3 G gave us mobile data and the Internet，and 4 G made all of these things faster.Now 5 G promises much faster data download and upload speeds，and more stable connections.This means that you will be able to download an entire HD movie in seconds and only experience a short delay（延迟） between sending and receiving data.
What changes will 5 G bring us？
With a 5 G network，the short delay in information exchange will allow driverless cars to run more safely.Meanwhile，5 G-enabled wearable devices（设备） will be of great use in hospitals.Besides，VR games will become more popular with 5 G because the short delay of 5 G will make the games feel even more real.
What are the disadvantages of 5 G？
According to the BBC，though 5 G will make our lives more convenient，it will not be perfect.For one thing，5 G will not "travel" far.On 4 G networks，you can be 10 kilometers away from the nearest transmission base and hardly lose signal（信号）.But 5 G will only cover about 300 meters.And in order to use 5 G，we will have to buy new products specifically designed for 5 G that are expensive at present.All in all，there is still much to be done before 5 G's popularization.
（1）The "G" in "5 G" refers to BB.
A．the speed of the Internet
B．the generations of mobile network technologies
C．the delay in information exchange
D．the game on the smart phone
（2）How many advantages of 5 G are mentioned in the third paragraph？ CC
A．One.
B．Two.
C．Three.
D．Four.
（3）What is the structure of the passage？ AA
A．Para 1
Para 2 Para 3 Para 4.
B．Para 1 
Para 2
Para 3 
Para 4.
C．Para 1 Para 2 Para 3 
Para 4.
D．Para 1 Para 2 
Para 3 Para 4.
（4）What is the best title of the passage？ CC
A．The Progress of Technology
B．Changes 5 G Brings Us
C．An Introduction of 5 G
D．Disadvantages of 5 G
【答案】B；C；A；C
【解答】
【点评】
声明：本试题解析著作权属菁优网所有，未经书面同意，不得复制发布。
发布：2024/4/20 14:35:0组卷：2引用：1难度：0.5
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