【推荐1】Artificial Intelligence (AI) is growing _______. We are living in a world that depends more and more on AI. It’s a group of technologies that _______machines get, understand and use information to do tasks.

AI's ______developments have got a lot of social attention. Some people have welcomed Al ______it makes things possible. For example, AI will have big influence ______areas like medicine and engineering. But this attention has also ______a lot of fear. Especially, many workers are worrying that AI could make them lose ______jobs.

According to a recent study, nearly five percent of jobs will disappear _______AI. In some industries, AI is already doing the work ______people used to do. such as assembling (装配)cars, digging the coal and lifting goods. Self-driving cars and ______by AI will also take away the drivers' jobs in the future.

On ______hand, AI will also create many new jobs for people. More people will be needed to write programmers for AI systems and they will set up and ______them, too. Meanwhile, jobs that require feelings, excellent ______skills with people will not be replaced by AI. These______jobs in fields like teaching, nursing and personal training.

AI is here. It is changing ______people live and work in many ways. That makes AI important to watch, not to fear.

【推荐1】Space suits don’t just make astronauts (宇航员) look cool. Without these special suits, astronauts wouldn’t be able to _________ their spacecraft (宇宙飞船). That is to say, they wouldn’t be able to walk on the _________ or work outside the International Space Station.

★_________ do astronauts need to wear space suits?

Space is a _________ place for human beings. Firstly, there is no air to breathe (呼吸). Secondly, space also has high levels of radiation (辐射) that can pass _________ our bodies and make us sick. Thirdly, some parts of space are really _________ while other parts are very hot. So astronauts could die in just a few seconds if they stepped outside their spacecraft without their suits. With a space suit, astronauts can move around in _________ for several hours.

★What can a space suit do for an astronaut?

Space suits keep astronauts safely sealed (密封的) inside. A backpack sends O₂ (氧气) in to let astronauts breathe _________. At the same time, the CO₂ (二氧化碳) that astronauts breathe out is sucked away (吸走). The suit also _________ them from harmful radiation and fast-moving space dust. Under the space suit is another suit that looks like a pair of tight pajamas (睡衣) with little pipes (管子) running through them. Water runs through these pipes to __________ astronauts because wearing a space suit can make astronauts very hot!

【推荐2】Doctors diagnose(诊断) patients online. Robots help to send food to _____. Drones(无人机) monitor people in crowds. We are using new ways to fight the novel corona virus. They are safe. They can help people ___ in touch with each other. Let’s meet these high-tech helpers!

Tele-medicine(远程医疗) system

With remote video system, doctors can diagnose patients without seeing them in person. Also, doctors from different hospitals can have a meeting by using the system ____. This saves a lot of time. Both Huoshenshan and Leishenshan hospitals have this system.

Drones warn people in groups

In some rural places, police use drones to monitor people in groups. When the drone _____ big groups of people, police will warn them through the loudspeaker on the drone. In some places, people also use drones to disinfect(消毒) their ___.

3D “hospital”

A company in Shanghai ___ 15 rooms by using 3D technology. They sent the rooms to Hubei for patients to live in. Each room is about the ____ of your bedroom. A 3D printer takes 24 hours to build the rooms.

AI system check for fever

At the Mudanyuan subway station in Beijing, an AI system can check people in crowds to see ___ they have fevers. When people ____, the system scans people’s faces. The system can check about 300 people in one minute.

Smart robots   

Time to eat! In some hospitals, smart robots help to deliver food to patients. The robots can also help to ____ medicine and show the way to people.

You might have noticed that sometimes, when you’re playing mobile games or taking a video call, the picture suddenly freezes because the network speed is too ________. When you try to download a movie on your phone, it seems to take forever.

These annoying things will soon become a thing of the ________, as China just issued commercial licenses (发放商用牌照) for 5G networks on June 6, 2019. This means that China’s telecommunications (电信) companies will be able to offer 5G network speeds for mobile phone users.

The “G” in “5G” ________ generation (of mobile network technology). 1G let us talk to each other. 2G let us send messages. 3G gave us mobile data and internet, and 4G made all of these things faster. So what will 5G bring?

First of all, 5G is so fast that it will allow you to download an entire HD movie in seconds. The delay between sending and receiving data will be shortened. Now 4G takes about 100 to 200 milliseconds (毫秒), while humans have a reaction time of about 200 to 300 milliseconds. But 5G will get the delay down to 1 millisecond or less, which is almost real-time.

Because of this ________ in speed, it will be possible to create and use new kinds of technology. Robots will be used to do operations because doctors will be able to control them from somewhere else without any delay. Self-driving cars will be able to run more ________ because they can smoothly communicate with each other, traffic lights and road sensors (传感器).

5G also makes the internet of things (IoT, 物联网) possible. IoT is a large network that connects nearly everything. ________, your toaster might be able to automatically start making your breakfast after your alarm clock rings.

All in all, 5G will shape every type of technology that it touches. And you won’t have to wait too long for that to happen.