How to write a 400-word composition describing the scene of scientific and technological activities

1. 500 Scenarios of Science and Technology Festival A: Scenarios of Science and Technology Festival

Technology makes our campus life more vivid! Recently, our school held the fourth Science and Technology Festival. There are more than 20 kinds of competitions in the Science and Technology Festival, including science and technology game competition, science and technology speech debate competition, science and technology forum, science fiction painting and so on. As a player and a small reporter, I am very busy. You have to take part in the competition and report live. Come with me to the scene and have a look.

First of all, the students listened to a popular science report with great interest, which was made by Fujimori, an academician of Chinese Academy of Sciences. Academician Teng cited a large number of examples to encourage us to "love science and learn science". The students really opened their eyes and benefited a lot. Oh, it's my turn to play! I took part in the radio direction finding competition. The competition is divided into preliminaries and finals. The students used the radio direction finder to find the signal source and accurately measured the radio number. The top five in each group entered the finals. In the preliminaries, there was a weak signal source in the grass on one side of the playground, so I looked around. I detected the signal of Radio 5. At this time, many students rushed to the finish line and I rushed to the finish line. I was the seventh to arrive. The first five students all said it was a signal from Channel 3, and then the teacher asked me. I stick to my answer, I am right! Successfully entered the finals, and the final venue was expanded to the whole school. I searched the playground with the direction finder, but there was no signal anywhere except in front of the teaching building, so I rushed over. There is a buzzing sound in the earphone, and there is a signal! I pressed the one-way key and looked around. Suddenly someone shouted, "Found it! Find it! " I've been thinking about it for a long time. Maybe everyone found out, so I'm in a hurry. I didn't listen carefully, took a card and rushed back to the classroom, only to find that I was the third. I wrote seven, and the result was wrong. I regret my carelessness very much, and I know that I should be serious in everything and never be careless. I won't risk success.

As an evening news reporter, interviewing is of course an important task for me. After participating in the competition, I immediately ran to the playground. Many experts and parents came today. I interviewed a visiting parent. "Now middle school students are very nervous about their studies. In this case, do you support their children to participate in scientific and technological activities? " The parent said that although middle school students are nervous about learning, scientific and technological activities can enrich students' lives, and science and technology is also the expansion of learning. I hope the school can hold a science and technology festival to integrate science and technology into campus life more deeply.

This science and technology festival has opened students' eyes and benefited a lot. I also have more fresh experiences, which are really interesting.

2. Find a 400-word composition describing the activity scene-relay race.

The school sports meeting is about to begin. In the classroom, Miss Li cheered us on: "Don't worry, run hard, we can't win baseball. We lost four games in a row. In this last year, we will win anyway. Look, I brought my camera! "

As the referee gave the order, the best students in our class flew like arrows, and soon they were ahead. The cheerleaders waved a small flag that said "Class 43 will win" and shouted "Come on". The second stick is Wu Jixian. She ran hard with her long feet, but Class 44 couldn't catch up with her. Maybe she was carried away by the momentum of our class. The students in Class 44 panicked and dropped the stick, which lengthened the distance in our class. However, the good times did not last long, and our class also lost the stick. Before Class 44 could cheer, their class dropped their sticks. The teacher of Class 44 quickly encouraged them to say, "Don't panic." But where they can hold their ground, everyone is lost and everyone is in a panic.

The students in our class saw the stick drop several times, and their spirits came and they ran very fast. As soon as I received the stick, I ran like crazy, and the surrounding scenery flashed vaguely. Amid the cheers of my classmates, I thought of the victory of our class, so I ran harder, but I was afraid of losing my stick until the smooth handover.

In a short time, we arrived at the last stop. Tan Bin finished the last race. He is only about one meter tall in the sixth grade. He is as thin as a stick. Don't underestimate him. He is the "king of running" in our class. He blushed and held back his strength. His hands shook with the rhythm of his feet. His feet seem to have stepped on the wind, and he can't see clearly at all. Did he use Huang Feihong's "shadowless legs"? Although our class has taken a big lead, he still dare not take it lightly, for fear of accidentally throwing a "mud dog" to let the other side catch up. For the long-lost victory, our class shouted together: "Come on, Tan Bin." Tan Bin lived up to expectations and handed the stick to his first classmate safely. Yeah! We won, and with a click, Miss Li's camera captured this wonderful moment. Everyone cheered and smiled, and Tan Bin was carried back to the classroom by a large group of students. The students in Class 44 are very depressed and sad. Some female students bowed their heads and stamped their feet, and tears unwillingly flowed down, which was in sharp contrast with our class. Haha, it seems that our class has the last laugh.

Back in the classroom, the teacher held a celebration party for us. Everyone sang the song "Unity is Strength", and the loud voice echoed in the campus.

3. How to write the composition of scientific and technological activities in the fourth grade of primary school? I also wrote that the ancient poet wrote in the blue sky, "there is no dust in the river"; The sky written by modern writers is "the blue sky is spotless and crystal clear".

Unfortunately, it is rare to see such a beautiful "day" now. Especially in cities or industrial areas, it is really uncomfortable to be shrouded in smog all day.

In the face of all this, you may be tempted to sigh: "Fresh, refreshing and clear breath, where have you been?" Hurry up and cure the "disease" of the atmosphere, and give me a blue sky and a red sun! We really have a lot of things to do, and the most important thing is to try to reduce the discharge of pollutants. Smoke and dust are mainly produced by the endless combustion of coal and oil.

By improving the combustion mode, the fuel can be fully burned, and the smoke can be greatly reduced. Try not to burn loose coal, develop coal gasification and liquefaction, and reuse the fuel containing a lot of ash and sulfur after washing.

The pollutants produced should be recycled by absorption, catalysis, adsorption and condensation, so as to turn harm into benefit and reuse. Even pollutants entering the atmosphere, we should try our best to reduce their harm.

We should strengthen the greening of the city, plant more flowers and trees, and open up more parks and avenues. From the point of view of preventing global warming, to control the growth of greenhouse gases, especially carbon dioxide, we should try our best to use natural gas as fuel.

If we can cancel the small chimneys of one household, provide central heating or implement power supply and heating cogeneration, we can save fuel and reduce carbon dioxide emissions. If the secondary utilization of aluminum in the world is doubled on the existing basis, the pollutants discharged into the atmosphere can be reduced by 6,543,800 tons per year.

There are more than 400 million cars in the world, which emit about 654.38+83 million tons of carbon dioxide every year. In order to reduce the greenhouse gas emissions of automobiles, besides limiting the number of automobiles, saving fuel consumption and installing purification devices, cleaner fuels such as methanol and ethanol should also be tried to develop public transport vehicles and electric vehicles.

Finally, the development and utilization of clean new energy is the most fundamental way to reduce air pollution. Such as nuclear energy, solar energy, wind energy, biomass energy, geothermal energy and other energy sources are clean, rich in reserves and have great development prospects.

The destruction of the ozone layer is a global problem. The United Nations Environment Assembly decided that the production of chlorofluorocarbons, the "culprit" that destroys the ozone layer, will be phased out at the end of 1995.

However, the life span of HCFCs is 50- 100 years, and150,000 tons of HCFCs have been lost to the atmosphere. So far, only a small part has destroyed the ozone layer, and most of the rest are still in action. The ozone layer will continue to be destroyed and will reach its peak in the first 10 year of the next century. As for the complete return to normal natural level, it will take at least a century! Air pollution is caused by human activities, and finally it has to be solved by human beings themselves.

It's just time waits for no one. We'd better take resolute action from now on and take measures to purify the air and give me back the blue sky.

4.xxx's scientific and technological activities composition 400 words scientific and technological activities

Today, everyone came to Zaozhuang Road Children's Palace with great interest to learn the last science and technology activity class-building structure design and creation.

After learning to turn in the morning, we began to build a house. I'm with Jiayi, Sisi and Yufan. Build a wall first, because I built a side with a door, so for the sake of beauty, I built stairs under it. The house was sewn by riding a horse, with three layers of Huang San ash, and the effect was good. But cece has some problems. She was so extravagant that she finally built a wall and broke it with a cry. Feather is the easiest. As long as a few pillars are erected, the wall will be finished. It occurred to me that I would build a garden, and everyone applauded. I asked Yu Fan to find seven plots of land, and then quickly put three on the left and three on the right, with a square bridge in the middle and pillars on the four sides. Jiayi suggested that we build a fitness area in the small garden, and we agreed to put some barbells and the like in the corner of the garden.

The garden has just been completed, and the house is being put on the roof, but Cece and Yufan have come to help. The house is too big to put on the roof. At this moment, a light flashed before my eyes. I said first bring the roof, put two boards on it, and then put the roof on it, and it will become a movable board. If it doesn't rain at night, we can still enjoy the moon! Everyone did it, and it felt good. In order to look better, I built a staircase and observation deck directly above the balcony, which can see the garden. You're finished. We finished the work.

Oh! Everyone has finished their work and is "celebrating"! Through this activity, we not only built a house, but also understood that unity is power, so we must unite in the future!

5.xxx's scientific and technological activity composition is 400 words, and then put columns on all sides, and make a group with Yu Fan.

Build the wall first, because I built the side with the door, so for the sake of beauty, Jiayi, Cece and I started her scientific and technological activities after she finished learning this morning. Today, she built a wall in luxury, but she accidentally broke it. She gave a shout and we began to build the house. I built stairs under it. The house was sewn by riding a horse, with three layers of Huang San ash.

I asked Yu Fan to find 7 pieces of land and then! Everyone has finished their work. I say we go to the top first. Oh, I feel good. In order to look better, we finished the work and put two boards on it. Everybody clap. Jiayi suggested that we build a fitness area in the small garden, and we all agreed to put some barbells and the like in a corner of the garden.

The garden has just been completed, and the house is on the roof, but Cece and Yu Fan came to help, and the effect is good. But there was something wrong with Cece, and then the top cover was put on, and it became a movable board. They were "celebrating". The house was too big to get to the top. Just then, a light flashed in front of my eyes.

Feather is the easiest. No sooner had I put up a few pillars than the wall was finished. I put up a staircase. I had a whim to set up a garden, and set up an observation deck directly above the balcony, where I could see the scenery of the garden. You're finished. Put 3 pieces on the left and 3 pieces on the right, and the middle can be used as a bridge. If it doesn't rain at night, you can enjoy the moon! Everyone did it right, and everyone went to Zaozhuang Road Children's Palace with great interest to learn the last science and technology activity class-architectural structure design and creation.

6. The composition describes the 400-word SOSO user at the scene on September 8, 2009. First of all, we must explain the background of the scene.

Such as the time, place and environment of the event site, let people know what kind of social or natural environment the scene is in. Second, we should write details on the basis of the overall situation.

When writing a scene, you should make a general summary of the scene, so that readers can understand the overall appearance. But at the same time, the scene should also have a key part, which should be written in detail, specific and comprehensive.

Third, write the atmosphere. Atmosphere is an emotion or feeling that people see or feel in a certain environment.

No matter what the scene is, there will be an atmosphere, such as a celebration scene with a happy atmosphere; The atmosphere at the game site is tense; Farewell to the scene has an inseparable atmosphere and so on. Fourth, write the scenes in order.

The scene is a comprehensive picture composed of people, events, scenes and things, and it is impossible to write it all at the same time. Therefore, you should arrange the order when writing the scene.

Generally speaking, scene descriptions can be arranged from face to point. For example, to describe the celebration of Teachers' Day, you can first write the general atmosphere of the celebration and outline the situation of "face", and then write the performance of the principal, teachers and classmates respectively.

So that they can be combined and organized. Scene description is a focused and concrete description of the scenes and scenes of activities.

The key is to write an appropriate atmosphere in the scene description, show the wonderful scene, and make people feel in the mirror.

7. Find a 400-word composition describing the activity scene-the school sports meeting of the relay race is about to begin. In the classroom, Miss Li cheered us on: "Don't worry, run well, we can't win the game. We lost four games in a row. In this last year, we will win anyway. Look, I brought my camera! " As the referee gave the order, the best students in our class flew like arrows, and soon they were ahead. The cheerleaders waved a small flag that said "Class 43 will win" and shouted "Come on".

The second stick is Wu Jixian. She ran hard with her long feet, but Class 44 couldn't catch up with her. Maybe she was carried away by the momentum of our class. The students in Class 44 panicked and dropped the stick, which lengthened the distance in our class. However, the good times did not last long, and our class also lost the stick. Before Class 44 could cheer, their class dropped their sticks.

The teacher of Class 44 quickly encouraged them to say, "Don't panic." But where they can hold their ground, everyone is lost and everyone is in a panic.

The students in our class saw the stick drop several times, and their spirits came and they ran very fast. As soon as I received the stick, I ran like crazy, and the surrounding scenery flashed vaguely. Amid the cheers of my classmates, I thought of the victory of our class, so I ran harder, but I was afraid of losing my stick until the smooth handover. In a short time, we arrived at the last stop. Tan Bin finished the last race. He is only about one meter tall in the sixth grade. He is as thin as a stick. Don't underestimate him. He is the "king of running" in our class. He blushed and held back his strength. His hands shook with the rhythm of his feet. His feet seem to have stepped on the wind, and he can't see clearly at all. Did he use Huang Feihong's "shadowless legs"? Although our class has taken a big lead, he still dare not take it lightly, for fear of accidentally throwing a "mud dog" to let the other side catch up. For the long-lost victory, our class shouted together: "Come on, Tan Bin."

Tan Bin lived up to expectations and handed the stick to his first classmate safely. Yeah! We won, and with a click, Miss Li's camera captured this wonderful moment. Everyone cheered and smiled, and Tan Bin was carried back to the classroom by a large group of students.

The students in Class 44 are very depressed and sad. Some female students bowed their heads and stamped their feet, and tears unwillingly flowed down, which was in sharp contrast with our class. Haha, it seems that our class has the last laugh. Back in the classroom, the teacher held a celebration party for us. Everyone sang the song "Unity is Strength", and the loud voice echoed in the campus.

8. An activity mainly describes a 400-word scene. On that day, the school organized a June 1 activity for us. During the day, we went to the garden, played games, and visited the garden mainly to see some wooden figures, including handmade products, some paintings drawn by students, and scientific composition.

After visiting the knowledge booth, I went to the class to play games, but I didn't arrive at the class. Suddenly, the radio informed me that we should take pictures together. There are 64 people in the class, I am 44, and I am very nervous when I arrive. The photos must be ugly. After taking photos, I flew back to the classroom. The teacher waited for us to take all the photos, and then returned to work to give us snacks, including chocolate, hollow cakes and small sour Q candy.

Wait a minute. Food.

I didn't start the game until I distributed the food. Unfortunately, the game can only be played once, and there is only one set of drinks. When I get any drinks, I get a bottle of drinks. Drinks include: rock candy Sydney, Pepsi-Cola and Jiaduobao, but I donated money from 22 yuan on June 1st, so the teacher will reward students with a bottle of Jiaduobao above 1T20. In the evening, there are some students' performances, but only for parents. Four or five students in our class performed on stage, three students danced Jiangnan Style, and three students danced street dance, with dreamy eyes.

This is our June 1st, Happy June 1st, our happiest program of the year.

With the rapid development of modern science and technology, we have walked out of the previous era of eating blood and drinking blood, and came to the era of advanced science and technology.

The development of science and technology has brought great convenience to our life. I used to worry that there would be no lights at night, but every household is brightly lit tonight; It used to be luxurious to taste the delicious food in the sea, but now fish and shrimp are commonplace; In the past, I always found it difficult to deliver letters from home, but now, heaven is still our neighbor ... yes, a series of benefits brought by science can not be ignored! In the Tang Dynasty, Yang Guifei wanted to eat fresh litchi, but fresh litchi could only be eaten in the south, so the emperor sent someone to transport it from thousands of miles away with a fast horse. How many fast horses have been exhausted to ensure freshness! But nowadays, it is common for ordinary people to eat fresh litchi everywhere in the market.

It can be seen that the development of science and technology has brought us a lot of convenience.

10. The activity scene in the park, describing the writing scene in 300 words.

What's the scene? The scene we are discussing here,

Refers to more people.

An activity scene formed by interaction on a certain occasion. Such as the flag-raising ceremony,

Classroom discussions, cultural performances, sports competitions, etc. , there are many people attending, and

Mutual * * *, so it constitutes a certain scene, that is, the scene.

Describing these scenes in words is scene description. Scene description

It is often a comprehensive use of narrative, description, lyricism, discussion and other expressions.

Focus on venue environment and people's activities,

Let readers have an immersive experience.

Feeling, so as to achieve the role of rendering the atmosphere and highlighting the center.

There are two elements that make up the scene: one is the site environment, and the other is people.

Activities, in which character activities are the key elements. So if you want to write a good scene, you must

Pay attention to the following three points:

First of all,

Write a typical environment where the scene appears,

Set off the characters with the environment

Activities.

Second,

Write down the activity groups that make up the scene,

Because this is a scene,

no

It can be formed by the activities of one or two people.

What can be formed is the words of more people.

Therefore, writing a good activity group is the basic content of scene description, that is, field.

"Noodles" in noodle description.

Third,

Write down the main characters and activities in the scene,

In one scene,

There are many people and diverse activities, so it is impossible to cover everything. We should catch them.

Safety engineer, electrical engineer, property manager, registered asset appraiser and registered chemical engineer.

Don't describe typical people and activities in detail, be focused and specific.

Vivid and impressive, this is the "point" in the scene description.

The combination of point and surface and the contrast of environment are the basic methods to write a good scene.

In the following homework for primary school students, the scene description is very wonderful.