① More and more teachers say the digital age has had a good and a not-so-good influence on the American teenagers. More than 2,000 high school teachers took an online survey. 75 percent of the teachers said the Internet and digital search tools have had a “mostly good” use for their students' research habits and skills. But 87 percent agreed that these technologies “make the students not have enough attention.” And 64 percent said the technologies “do little to help them in courses.”

② The Pew Internet Project did the survey with the National Writing Project. Judy Buchanan is a voice director of the National Writing Project. Ms. Buchanan says digital research tools are helping students learn more, and learn faster. Teachers really like these tools, because they are ways to make some of learning exciting. Young people enjoy using these tools. And the goal is to help them become creative students of meaningful work, and not just that kind of copyist.

③ But one problem the survey found is that many students lack digital literacy. In other words, they trust too much of the information. Judy, Buchanan says these students, have not developed the skills they need to tell whether the online information is good or bad.

④ Another problem the survey found is something that might not seem like a problem at all, being-able to quickly find information online. Teachers say the ability of their students to work hard to find answers is becoming weaker. They say students depend too much on search engines (引擎) and do not make enough use of printed books or research, librarians.

⑤ Besides, many teachers are also worried about the problem that the Internet makes it easy for students to copy work done by others, instead of using their own abilities.

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Shanghai Vice-Mayor Wu Qing made the world’s first 5G video call on March 30, 2019, in Hongkou, Shanghai.

Now 5G, fifth-generation mobile communication technology, is coming. Compared with 2G, 3G, and 4G, 5G is not independent and brand-new. It is further development of present mobile communication technology (移动通信技术).

5G makes information break through the limitation of time and space, providing a more wonderful user experience. It will influence (影响) all areas of the society in the future, such as industrial machines, farming equipment, transportation and so on. It’s much faster than 4G—the 5G mobile network is more than one hundred times faster than the 4G mobile network. It will also realize the general hope of “Get the information whenever you want and all things on earth are at your fingertips”.

In recent years, China has paid great attention to the use of 5G and made great efforts to develop 5G network. China is expected (预料，预期) to become the world’s largest 5G market by 2025 with 460 million users, China Daily reported. The user number in China is expected to be higher than that of Europe (205 million) and the United States (187 million) combined (总和的). Backed by 5G, China’s mobile ecosystem (生态系统) is expected to add 6 trillion yuan (about 895.92 billion U.S. dollars) in value to the national economy (经济) in 2023, up from 5.2 trillion yuan last year, said the GSMA report.