Composition: write a science fiction story, more than 500 words. It needs to be quick. Homework is due tonight and tomorrow morning.

Little master, get up quickly, the local BIGBANG will start in four hours! Including us! "This is my electronic pigeon calling me." Ah! "I seem a little panicked. Because even if I take the shortest route, I can only fly out of this area in four and a half hours by my ultralight UFO. Even if we hurry to prepare now, it will be too late!

Big bang, here we go. Our earth is at the boundary of this area, so I was thrown out of this area and landed on a water-blue planet called "Children's Planet".

I live in the home of a kind person. After a long time, I found that the residents on this planet are children and will never grow up. These children come from different planets. Although a child, everything is as good as an adult. With their wisdom and sweat, they have built the "children's planet" to the level of modernization everywhere.

The industry of Children's Planet is very developed. There are hundreds of factories on the earth, including textile systems and food industry systems ... all factories are automated and controlled by only a few computers and intelligent robots. For example, the "Children's Planet Textile Factory", where textile workers no longer have to check back and forth between several machines as in the past, are replaced by intelligent robots. Once a fault occurs, the robot will handle it simply and quickly. If the fault is too big for the intelligent robot to handle, it will make a "beep" sound to remind the staff to go up and deal with it.

The course of "Children's Planet School" is very interesting. The children in the school unconsciously learned a lot of knowledge while playing. For example, in the Chinese reading class of "Children's Planet School", students in one class read an article at the same time and then make an animation according to the content of the article. Read the article again, record it and insert it into the corresponding animation according to the meaning of the article. Then adjust an appropriate speech speed. When the students have finished their own animation, the robot teacher will take turns to show each student's animation. When watching the finished animation, many students have been able to recite it backwards. All the students here love learning and get good grades. The students who come out from here are all talented people and highly valued talents.

Vegetables and crops on the "Children's Planet" grow amazingly. Walking into the farmland, we can see a "forest" of vegetables and crops. Sunflowers are as tall as small trees, and sunflowers are as big as umbrellas. Wheat grains are as big as red dates and persimmons as big as pumpkins. If persimmons are hung in front of the store, some people may mistake them for lanterns. There are all kinds of seasonal vegetables here. Why are all the fruits in the farmland here so big? It turns out that this kind of plant is planted under weightlessness, plus there is no storm, abundant sunshine, moderate nutrition, and the plant can fully grow, so the fruit is amazing.

Although there are no adults on the "children's planet", children still build this planet rich and developed. Of course, I hope everyone will visit the "Children's Planet" and increase their knowledge. In 3020, the world's top scientists discovered the wave crystal in the "Science and Technology Forest", which is the last forest made by human beings. Due to extensive exploitation and utilization, there are not many real forests in the world at present. Bo Jing is the only survivor from a distant wind-like planet, and its arrival further confirms the fact that a devastating disaster-devouring the empire is marching like the earth!

At this time, Bojing floated transparently in mid-air and a lovely girl appeared in it. She shouted: the army devouring the empire is approaching here, and it has destroyed our home. Its speed is amazing. In a few decades, it will devour the earth! !

After listening to the little girl, everyone was stupid! The home on which they live is about to disappear! "Why, we didn't provoke the empire, why did they eat us!" Humans growl angrily.

"hey!" I only heard the sigh of the little girl in Bojing! "How beautiful our home is! There are several white clouds floating in the blue sky. There are many trees and the air is so clean and natural. Greedy people use these natural resources, constantly develop and grab them, resulting in our planet not even a healthy tree. What it fears most is the purest natural resources. At this moment, when it swallowed the empire, it took advantage of our shortcomings and swallowed our planet. It absorbs all the nutrients and available substances on the earth. About 10 years later, it spit out the debris of the planet, full of smoke, bare land and erupting volcanoes. I am a survivor of this planet.

After listening to the little girl's story, everyone was dumbfounded-the earth is about to be destroyed, which is caused by ourselves. It's too late now, and there is no regret medicine to take. It's too late to mend. It was their own ignorance that caused the disaster. Everyone just sits there waiting for the moment of death, because they know that the girl said "decades" and it's only been a few days! ! At this time, human beings are regretting, scolding themselves, scolding themselves for ignorance and greed. ......

On May 13, 3020, the terrible devouring empire came, and the earth was completely dark and gradually swallowed by devourers. The terrible moment has finally arrived. .....

In 3 120 years, the earth completely lost its function and became a ruin. It is a planet described by the word "garbage", and it is not others but ourselves that lead to this result!

Dialogue with future teenagers

It's quiet at night. I toss and turn in bed and can't sleep. The clock hanging on the wall is ticking away. Suddenly, a gentle voice sounded: "Children of 2 1 century, children of 2 1 century, please answer …" The continuous voice floated in the room like a ghost. My heart suddenly shrank. Who are you? Who are you? Is it a thief? Is it a ghost? I crawled back and forth in the room, looking for the sound coming from there; I forced myself to calm my excitement and listen attentively. "oh! Oh, my God! The clock is shining? Yes ... but this is not a clock! Is that the vast and starry universe I have seen on TV? I can't help secretly surprised. Covered with faint moonlight, I gently moved to a small bench, stood up, and got close to the luminous body … closer, closer. I looked at the luminous image on the wall with fascination. How beautiful! My hand involuntarily raised and touched it. " Ah! The image became my body ... "I was sucked in by the image before I could think.

"Why, isn't this the universe?" I was surprised and looked around at many colorful tunnels. Just as I was watching, there was a loud bang, and a monster appeared in front of me: a green body covered with prickles like cactus, big black eyes and a pair of thin film wings. I almost fainted when I looked at it. It came to me step by step, opening its mouth wide, and its black fangs were daunting. Will it eat me? Or bring me back to their planet as a specimen like in science fiction ... The more I think about it, the more scared I am, shaking all over, and shrinking back step by step. "Stand still, children, I won't hurt you." Its language is actually Chinese, yes, the same as ours. Its voice is so amiable that it enters my heart like a warm current. "Who are you?" I still have a lingering fear. "I am a human in 4099! What? People, too! ? I can't believe it. I rubbed my eyes hard. " You are a 2 1 century human! ""yes. But you say you are human, why do you look like this ... no, is it? " "alas! This is all caused by the harsh environment. In order to adapt to the tyrannical and unpredictable weather, we have to use science and technology to transform and transform ourselves ... just look at the crystal screen! " The voice just fell and the tunnel next to us changed. In front of us is a dense virgin forest, and a few archaeopteryx, which can only be seen in the picture, are calling among the winding towering trees in Gu Teng. Everywhere is so beautiful, green mountains and trees, clear water and blue sky, showing a vibrant scene. Then, the screen changed again, and a dark scene came into view: "Go! Kill ... "The avalanche of shouting ShaSheng sounded; Subsequently, a large group of ancient China soldiers with long braids came to kill with old rifles; Black fireworks filled the whole battlefield. In an instant, the picture changed again: a pool of black water that is about to dry up, next to several rolling bare mountains; More than a dozen chemical plants beside the mountain "grunted" and emitted black smoke. Then, the phenomenon of flying sand and stones suddenly appeared on the screen. There were deserts everywhere, and there were no cacti. There were only four or five monsters who called themselves "beautiful women" just now, and there were several strange buildings around them. This scene is a bit like the Sahara desert. Suddenly, the screen disappeared and I went back to the tunnel. The monster in front of me said to me, "little friend, you understand everything now!" "It is because our ancestors destroyed the environment at will that it became like this. You must go back and tell people to take care of the environment! ……"

Then I went back to my room. Looking at the moonlight outside the window, I secretly made up my mind: Yes! Do it! Alien advice

One night, a cosmic man appeared in the president's office.

At that time, the president was racking his brains to consider an important question. Suddenly, he felt as if there was a voice behind him, so he turned to look-suddenly he broke out in a cold sweat. It turned out that behind him stood a terrible monster, about the size of a child, with a long and narrow triangle on his head and a cold blue light shining all over his body.

"Who are you?"

"I'm from planet ii."

"Oh, you are a cosmic person? Is it an illusion caused by my overwork? "

"Your doubt is taken for granted. Then, how about reaching out and touching my body? "

The president stretched out his hand and touched each other with a grain of salt, only feeling a little warm and unusually smooth. Only then did the president believe it.

"It seems that you are really a cosmic person. How did you get in? What is the purpose? "

"According to you, that's a flying saucer. I flew this flying saucer across the vast space and landed on this building called the Presidential Palace. Because the flying saucer is equipped with a special device, things like your radar on the earth can't find me, so I can come to you unnoticed. As for the purpose of coming here, it goes without saying that it is of course for friendship. "

"Is that right? We are of course in favor of establishing friendly relations with people from other planets. However, there are still many thorny problems on earth that have not been solved ... "

A very embarrassed expression suddenly appeared on the president's face. Owen looked at the president and said, "You can imagine what this is all about. I took a close look before landing. There seems to be opposites on the earth. This is difficult even for us in Shijie. Although we subjectively want to enhance friendship with you, it is difficult to succeed because your internal opinions are not unified. "

"Yes, I'm ashamed, please don't joke. I worry about this and that every day. I just thought your appearance was an illusion because of fatigue. However, it seems that this disunity will continue for a long time. "

"Why is that?"

"This is due to the balance of power. If only our country were stronger and weaker for the sake of founding the country, but ... "The president said regretfully. He secretly calculated in his mind that the astronaut's visit is a once-in-a-lifetime good plan, and he must not miss it. He must try to form a friendly alliance with other planets.

Il star people like to encourage the President's idea, put forward a suggestion:

"That's right. Nothing is more disappointing than this. Even I'm not going to go home empty-handed and get nothing. If you need it, I can help you and do what you want. "

"What are you going to do?"

"I'm sorry, please allow me to say something rude. The technology of our Il planet is more developed than yours. I will do my best to help you and strive to expand the strength gap between our country and your country. "

"For example ..."

"Now I have a design of absolute defense device here, which is similar in shape to a towering antenna. As long as this device is erected, nothing can pass through the space around it. "

"Is this really the case?"

"That is to say, an invisible and indestructible barrier was set up at high altitude. How about arranging this advanced absolute defense device at the border? Neither jets nor missiles can invade your country. "

As soon as the president heard Irstar's explanation, he was filled with joy, nodded happily and said with a big smile, "Oh, great. In this way, in international negotiations, no matter which country, it can adopt tough diplomatic means. "

"Well. No, this is a complete set of design drawings. Please put it into mass production as soon as possible so as to deliver it as soon as possible. It is said that there is a spy on your earth, and he is very well informed. If you hesitate, won't the secret be quickly spied by the enemy? And I can't wait here all the time. "

"I see."

"In addition, about my coming to earth, please keep it a secret for the time being. If people know that aliens are involved, it may cause unprecedented chaos. "

"I see."

The president immediately called an emergency ministerial meeting in extreme secrecy. No one objected at the meeting. This is a good thing for the country, and it can also form friendly neighbors with other planets, which is also of great benefit to all mankind.

After the trial production of the absolute defense device is completed according to the drawings, the exercise will be conducted immediately. Sure enough, no advanced weapon can break through this defense line. So the president ordered to put into mass production immediately.

Then, on the basis of self-confidence, tough diplomatic activities began. However, other countries did not buy it and protested against this unreasonable and overbearing behavior. He also warned Jianguo without weakness: arrogance will never end well. The two sides are tit for tat and do not give in to each other. Instead of reaching an agreement, the contradiction has become more acute. Finally, from diplomatic rhetoric to the real knife and gun at the border-a large-scale war began.

However, just as the president was triumphantly dreaming of dominating the world, an unexpected news suddenly came from the front.

"That's great! Enemy missiles flew in across the border, a large number of strategic targets were destroyed, and we suffered heavy losses! "

The president was suddenly surprised and turned pale, and quickly ordered a counterattack. Then, the president turned to Owen, who was standing by, and asked, "Hey, what's the matter? Is there anything wrong? "

Il star people seem to be disappointed.

"I didn't expect things to become like this. I thought there would be absolutely no problem. It's really a pity. That's a real pity. If you try, you will lose everything. I'm sorry, goodbye ... "

"Hey, hey, you are so irresponsible, this is no joke, you damn guy lit the fire but ..."

However, Irvine people put aside the angry and furious president and immediately boarded a UFO and landed on the earth. Soon after, Owen joined another UFO waiting somewhere in space and they talked to each other.

"What bad luck, lost! I have too much confidence in that absolute defense device. "

"Our side is also stepping up research on new weapons. We go all out to develop a missile that can break through any line of defense at all costs, so that those who are dizzy can use this powerful missile in the war. "

"Anyway, we were defeated this time. According to the pre-signed treaty, we must agree to all your conditions. "

"We are modern people with a high degree of civilization. Although we invented many powerful new weapons, we cleverly passed the war on to the residents of other planets and told those guys to use them. All we have to do is stand by and decide whether we win or lose in the casino through the victory or defeat of their ongoing war. This is a reasonable thing. Therefore, in this long history, there has never even been a war on our planet Il. And can maintain permanent peace in the future. " These can be adopted.