The composition of the fourth grade of primary school "The future …

I'm not a wizard by profession, and I don't know, but in 2777, there will be plants and animals not only on the earth, but also on Mars, the moon and other planets. Do you want to know why? The answer is simple, because I lived in 2777, and now I just come back to play in a "time machine".

The increase of population explosion on the earth has attracted more and more scientists' attention. Finally, they showed their killer weapon: emigrating to other planets. I am a glorious group of people on the earth, and I came to the moon praised by countless ancient people. Maybe you will ask, "Isn't the moon a dead planet?" This is the power of high technology: they put a kind of "gravity glue" in a small hole on the earth drill, let the earth drill to the core of the moon, release the "gravity glue" to make the moon attractive, then dig a deep and wide pit on the moon, fill it with water, and then use various new technologies to adjust the rotation and turnover speed of the moon, overcome the temperature difference and activate the moon.

When I get up in the morning, because the gravity of the moon is not as big as that of the earth, clothes float on my body. When I reached out to catch them, my clothes fell into my hand. Get dressed, brush your teeth, wash your face, finish breakfast, turn on the radiation-free computer, enter the "home campus" website and enter the "classroom". The computer teacher began to give lectures, which became more lively and interesting. In a short time, the class was over. I clicked on the "Homework" column, and immediately a red window popped up, all the questions to be done today, and the computer finished. There is a topic: make a complete and fluent sentence with "excitement" and "sweetness" I wrote: I stood on the high podium, holding a heavy trophy, so excited that I shed sweet tears. The computer drew a crimson line under "Sweet" and wrote beside it: Please taste the tears carefully. This really makes me laugh. The study task is finished, but it's only noon. What should I do? I looked at that hot summer and suddenly had an idea: to go swimming. To come to the swimming pool, you don't need a swimming card, just a fingerprint comparison. The bathing suit was also taken in the swimming pool. It's also a fingerprint comparison. No one can steal your clothes and cards. There is also an automatic temperature control system with automatic cleaning system in the swimming pool, which is powered by solar energy and consumes no electricity at all.

Oh, my God! The "time reversal machine" is about to sail. I have to go back. Talk to you next time. Goodbye.

Time flies, and it has reached the year 2063 in a blink of an eye. Time is short. Fifty years have passed. Compared with the past, the scenery now is really even worse. During this period, the biggest difference lies in the means of transportation.

Fifty years ago, the exhaust of cars and the roar of engines echoed the "big traffic jam" at the peak of off-duty passenger flow, which not only affected people's travel, but also damaged people's health, which was really inconvenient.

Now, when you open the door, you will find that there are no pedestrians in the street, and all kinds of transportation have been replaced by an airplane, which neither burns oil nor uses electricity. When you see this, you will ask: What energy do they use? The answer is that the carbon dioxide exhaled by drivers can also produce fresh air.

Next, let's talk about its structure: this kind of aircraft is spherical and adopts the most advanced electronic structure. Volume 1m3, weight 200kg, load 300kg, zero emission. When the top speed is 10000KM, people can reach their destination at an extremely fast speed.

In addition, it has many other functions, such as when it is about to collide with other aircraft in the air, it can calculate the avoidance route within 0.00 1 second and drive according to this route, which is very safe; For another example, there is a "big traffic jam" in the air (the possibility of this situation is one in a billion). If it can't be solved in three seconds, then a four-dimensional space will pop up and reach the destination directly. In addition to the above functions, it can also be used for automatic driving, water use, entertainment and so on. And it's very easy to use.

Didi, Didi, wake me up with an alarm clock. Oh, it was a dream of Conan.