Ⅰ.阅读理解
China's lasting research and development efforts have helped the nation keep its pioneering role in developing 5G mobile communication technology, related standards and the licensing stage.
Chinese telecom companies are trying to keep their leading role in the global race for 5G commercialization (商业化)．They are speeding up R&D of the fifth－generation mobile communication technology.The 5G technology is said to be at least 10 times faster than 4G services which means it will enable superfast downloads of 'heavy' files like movies, self－driving cars and virtual(虚拟的) reality games.It will do large－scale experiments of using 5G in 17 cities.Yang Jie, chairman of China Telecom, said，“We aim to begin commercial 5G services in 2020.”
China Mobile Communications Corp is planning to use 5G with AI and cloud technology for a latest network, which is planned to be used in the year 2020.The company has played an important role in the finish of the first stage of global 5G standards.The company will push forward the cloud deployment (云部署) of the superfast technology and build an intelligent network.
Similarly, China Unicom said it will start 5G testing this year, commercialize 5G in 2019 and finally carry out large－scale commercialization in 2020.
China is expected to have 576 million 5G users by 2025, according to a report published by EY earlier this month.With the global united standard set to be finished in the next year or so, China is likely to advance its plan for the commercial use of 5G connections to 2019, to possibly become one of the first 5G－ready markets in the world, EY forecast.
In the past, China was behind other countries in publishing 4G and 3G licenses.But in 5G, perhaps China will race ahead in R&D.China is struggling to take a leadership role in the global landscape.China is also hungry to join in the decision of 5G international standards, making it one of the major players.
文章大意：本文是一篇说明文。文章主要讲述了中国日益发展的网络5G技术并对其进行了介绍，以及与他国的5G技术领军争夺战。
1．The word “heavy” in the second paragraph refers to C.
A．important B．long
C．huge D．valuable
解析：词义猜测题。根据文章第二段内容，“The 5G technology is said to be at least 10 times faster than 4G services which means it will enable superfast downloads of 'heavy' files like movies, self－driving cars and virtual (虚拟的) reality games.”5G技术据说比4G服务快至少10倍，这意味着它可以快速下载“大储存量”文件，如电影、自动驾驶汽车和虚拟现实游戏。故heavy的意思为“巨大的”。故选C。
2．What can we infer about the passage？A
A．China attaches great importance to the commercial application of 5G.
B．The large－scale experiments of using 5G will be done in 17 cities by China Mobile.
C．China lay behind other countries in using 4G and 3G in the past.
D．China will decide 5G international standards in the future.
解析：推理判断题。根据文章第一段第一句内容，“China's lasting research and development efforts have helped the nation keep its pioneering role in developing 5G mobile communication technology, related standards and the licensing stage.”可知中国长期的研究和开发工作，帮助国家在发展5G移动通信技术、相关标准和许可证阶段保持了开创性的作用。即中国高度重视5G的商业应用。故选A。
3．According to EY forecast, the year when China plans the commercial use of 5G connections is likely to be B.
A．2018 B．2019
C．2020 D．2025
解析：推理判断题。根据文章倒数第二段第二句内容，“...China is likely to advance its plan for the commercial use of 5G connections to 2019, to possibly become one of the first 5G－ready markets in the world, EY forecast.”可知安永预测，中国计划将5G连接商业化使用的时间可能是2019年。故选B。
4．The best title of this passage is D.
A．The 5G technology in China
B．Three communication companies in China
C．The commercial use of 5G in China
D．Chinese carriers wrest (争夺) 5G lead
解析：标题判断题。根据文章内容，文章主要讲述了中国日益发展的网络5G技术以及与他国的5G技术领军争夺战。结合选项，故选D。
