There are many people in the world now. There will be a lot ________ people next century (世纪). So the earth will be very crowded ________ there will be a little room for each person. Maybe there will be only standing room on the earth ________ 100 years. That will be a very serious ________. So people are doing their best to ________ a way to solve it.

The moon is the satellite (卫星) of the earth. Maybe people will ________ on the moon one day. But there is no air, no plants ________ no life there. So ________ are doing experiments in many ways. They may solve many problems ________ people can live on the moon. I am sure our dreams will ________ in the next century.

The year 2040 sounds like a long way off. By that time, what will technologies look like, and what _______ will they bring to classrooms? Here are some examples of what we may see in schools in the coming years.

Interactive walls (互动墙)

In traditional classrooms, teachers write on _______. But in _______ classrooms, teachers will write all the important points on interactive walls. The difference is that interactive walls can also _______ what students have written on their own desks. It can encourage them to take part in classroom activities and to become more _______ in their learning.

Holograms (全息图)

What does the inside of a planet look like? Most of us learn about this from _______ in books. But it is hard to imagine and to understand a planet only through the use of flat pictures. Students in the future are likely to have a very different _______. With the help of holographic technology (全息技术), they can learn from 3-D image (三维图像) that are projected inside of the classroom. It will help them get a_______ impression.

Virtual reality (虚拟现实)

Virtual reality has been used to teach pilots _______ to fly planes. In 2040, it may provide students with immersive scenes (沉浸式场景) to learn the skills. For another example, when they learn about an ancient queen, they will be able to “walk” in her castle. They will not only read about ________, but also “experience” it.

What will our life be like in the future? Each family will have a _______ in the future. You can ask it to do everything _______ you. It will serve you _______ hours a day. The robot will _______ like a human. It can talk with you when you are _______. You won’t know whether it is a human _______ a robot when you meet it on the street.

People will spend _______ time on work and have more time to travel. The vehicles（交通工具） in the future will fly freely in the sky because every vehicle will have wings with it. They will _______ you to any place you want to visit. You can go to _______ during your travel when you feel tired. All vehicles will be ________ because they’ve driven by robots.