【题目】 There has been a lot of publicity recently surrounding 5G, the next generation of wireless technology for the world. But what is this technology and how might it change our lives?
5G stands for fifth generation, meaning the next step in the progression of technology to replace the current 4G system. 4G was the replacement for 3G, which came after 2G, and so on. Earlier "G" systems were designed to improve mobile communication operations. Each new technology brought major improvements in speed and greatly increased network capacity（容量）. The new 5G system promises more of the same. However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.
Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（传感器） networks. 5G is also expected to connect self-driving cars and support new technologies involving virtual reality. Higher 5G speeds could also permit doctors to commonly perform remote medical operations. Factories and businesses could use 5G technology to increase automation and improve the collection of information.
Every coin has two sides. Much of the data could contain private details about individuals, businesses or government organizations. The increased data flow would give internet attackers a lot more possibilities to steal and misuse data. In addition, the wider use of a 5G wireless network means any breakdown of the system would have more widespread and severe results. Such difficulties could affect public safety as well as world economic activity.
【1】What is the significant difference between 5G and the early “G” systems?
A.It will affect more devices and industries.
B.It will change the way people communicate.
C.It will reform the pattern of information system.
D.It will improve internet speed and network capacity.
【2】What can we learn about "smart cities" from the passage?
A.Smart city is a city full of intelligent people.
B.Now many smart cities have been built all over the world.
C.As long as there is a wireless network, you can build a smart city.
D.The development of 5G accelerates the construction of smart cities.
【3】Why can 5G allow doctors to perform long-range medical operations?
A.Because of the low cost of 5G.
B.Because of the wide range of 5G.
C.Because of the high speed of 5G.
D.Because of the ability of 5G to collect information.
【4】What is the last paragraph mainly about?
A.Possible risks of 5G technology.
B.The advantages of 5G technology.
C.The influence of 5G technology on the world.
D.The importance of information security in the 5G era.
【答案】
【1】A
【2】D
【3】C
【4】A
【解析】
本文是一篇说明文。主要介绍了5G以及其优缺点。
【1】细节理解题。根据文章第二段的However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.可知然而，技术专家说，有一个主要的方法，5g不同于早期系统。 比其他“g”版本，它将远远超越移动网络技术，影响更多的设备和行业。故答案选A。
【2】推理判断题。根据文章倒数第二段的Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（传感器） networks.(无线产业集团表示，5G将通过连接传感器网络帮助增强未来的“智能城市”。)可推断5G技术的发展加速了智能城市的建设，故答案选D。
【3】细节理解题。根据文章倒数第二段的Higher 5G speeds could also permit doctors to commonly perform remote medical operations.可知较高的5g速度也可以允许医生进行一般远程医疗操作。故答案选C。
【4】主旨大意题。段首的Every coin has two sides意为任何事物都有两面性，联系上一段讲的是5G的优势，故本段讲述的应为5G可能存在的风险。故答案选A。
推理判断题是对暗含在文章中的人物的行为动机、事件的因果关系及作者未言明的倾向、意图、态度、观点等要进行合乎逻辑的判断、推理、分析，进一步增强理解能力，抓住材料实质性的东西。例如本题第2小题，根据文章倒数第二段的Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor（传感器） networks.(无线产业集团表示，5G将通过连接传感器网络帮助增强未来的“智能城市”。)可推断5G技术的发展加速了智能城市的建设，故答案选D。
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