ChatGPT, a smart AI chatting tool, has been popular in the education world in the past months. 【小题1】 Developed by US company OpenAI, ChatGPT is a powerful tool. 【小题2】

Although it seems useful to a certain degree, some schools in the US have banned (禁止) the use of ChatGPT. 【小题3】 The ban comes out of worries that the tool could make it easier for students to cheat on school tasks.

【小题5】 From their point of view, AI is a helpful tool that people will use and what we need to do is to change our learning, teaching and examinations.

If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G. The “G” stands for the “generation（代）” of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

On March 30, Shanghai vice-mayor（副市长）Wu Qing made the first 5G video call on a Huawei Mate X smartphone, CGTN reported. Shanghai has also become the first city in China to start testing 5G networks.

About 100 times faster than 4G networks, 5G will let people download and upload data faster than ever before. But 5G won’t just bring faster mobile internet. People can use it for many other things as well.

For example, 5G will help to make self-driving cars safer. Today’s self-driving cars have one problem—lag（延迟）, When the car “sees” an obstacle（障碍物）, it sends information to a data center and receives instructions.

However, it wastes time to send and receive this information. With this kind of lag, the cars might crash because they don’t receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer, according to CNN.

5G could also be used to power the internet of things（IOT, 物联网）. This refers to a large online network that connects all things and people. Fast internet speeds will be the key to developing this technology.

The IOT could be used in a lot of ways. For example, with IOT, your refrigerator could automatically（自动地）place an order online for eggs when it finds that there are no eggs left inside.