With the change of time, the technology of 2 1 century is really more and more developed. Let's see here first, whether computers, televisions, mobile phones and radios can reflect the development of science and technology. If you can't feel it, don't worry. Look over there with me. Cars, electronic dogs, automatic navigators, air conditioners, electric fans and many other items and technologies can reflect the increasingly developed science and technology in 2 1 century.
Technology is becoming more and more developed not only in daily life, but also in school.
See if the flexible wireless mouse can reflect the development of science and technology. See if the projector hanging in the air can reflect the development of science and technology. Do you think the big screen can reflect the development of science and technology?
Let's see what the PE teacher is holding in the gym. Can Timer Reflect Technology? You see, the rows of computers in the microcomputer classroom can reflect the development of science and technology. There is no lack of beauty in the world, but the lack of eyes to find beauty. As long as you pay attention to observation, you will find the development of science and technology in the world.
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Technology is around me.
We live in the embrace of science and technology every day and enjoy the convenience brought by science and technology every day. For example, the washing machine has brought great happiness to our life.
In the past, washing clothes was not only bitter and tiring, but also a waste of time. According to my grandmother, when she washes clothes, she carries them to the river in a bamboo basket, soaks them in water, then soaps them one by one and rubs them repeatedly by hand. After washing, knead the clothes into a ball, put them on the slate, beat them hard with a clothes-beating stick, and then wash them in the river. After washing, wring the water out of the clothes. Finally, carry the clothes home with bamboo baskets and hang them on bamboo poles.
Later, people invented semi-automatic washing machines, and life changed a lot. When washing clothes, put the clothes into the washing tub of the washing machine, then pick up the water, put the washing powder into the tub, turn on the power, press the switch and start washing clothes. When it's time to wash, start draining. When the water is drained, take out the clothes and put them in a dehydration bucket for dehydration. If you think your clothes are not clean, you can wash them a second time and a third time.
Later, there was a fully automatic washing machine, which was much more advanced than a semi-automatic washing machine. All you have to do is put the clothes and washing powder into the washing bucket and press the power switch, and it will automatically receive water, wash clothes, drain water and dehydrate. After all the work is finished, the washing machine will make a "beep" sound. At this time, you can hang up your clothes.
With the progress of science and technology, people's living needs are also improving.
Then came the multifunctional washing machine, which can not only wash clothes automatically, but also remove the peculiar smell of clothes, disinfect clothes, dry clothes automatically and iron clothes automatically. Compared with the era of "washing hands", people now live like immortals.
Washing machine, you freed thousands of people in Qian Qian from heavy housework, and I like you.
Technology is right beside me.
The word technology is familiar to everyone. Simply put, technology is technology. In a broad sense, it refers to the sum of natural science and technology and social science and technology.
Since the reform and opening up, with the passage of time, science and technology have mushroomed in the motherland. Looking around life, technology is everywhere, and technology is by my side!
Walking on the road at night, there are electric lights to illuminate us; Call a friend and take out your mobile phone at your fingertips; Back home, turn on the TV to watch the news, turn on the computer and chat with friends; Mother steamed rice with a rice cooker; Turn on the electric heater; The whole family is sitting around, enjoying the delicious food prepared by my mother with an electric wok ... Do you think we can leave technology anytime and anywhere?
Technology is very useful! For example, if there is no electric car, it will be inconvenient for us to communicate with distant relatives and friends; If there is no EMU, it will be difficult for people to travel everywhere. Without the space shuttle, it would be empty talk for people to go into space; If there were no icebreakers, it would be difficult for us to go to Antarctica. Without space instruments, it would be just an illusion for humans to land on the moon. ...
On the contrary, with technology, our life will be better-with fax, our documents can be easily sent out in an instant! With robots, you can be in a space that people can't reach; Using laser, you can make fitness equipment; With air conditioning, people can feel as comfortable as spring even in hot summer. ...
It is not difficult to see: all this, people enjoy the achievements of science and technology!
This shows that technology has helped us create a superior living environment; Science and technology have improved our quality of life; Technology is the crystallization of the wisdom of people all over the world!
We are engaged in technology, and we should constantly learn new technologies!
Science and technology are around us, and we must vigorously develop science and technology!
Changes brought about by the development of science and technology Today, I will introduce you to the development of computers.
Computer, also known as electronic computer, was invented by von Neumann in the United States in February 1946. At first, the computer needed a room to hold it, and several people had to work together to operate it. At that time, the computer was running very slowly, and it took a long time to calculate a mathematical formula.
But because of the progress of science and technology, the computer has become a pure screen computer, which runs faster, but its size has become smaller, so one person can operate and move! The most important thing is that computers have more and more functions. With the continuous efforts of scientists, pure screen computers have become liquid crystal computers. The computer screen is very thin, with little radiation and much clearer screen.
Under the research of scientists, LCD computers have become portable computers with more functions, which can be carried around and communicated with people all over the world on the train. This is the process of computer development! This is the change brought by the development of science and technology.
Write a 300-word composition about scientific production that you are familiar with, "Thinking is the most beautiful flower on the earth", and the spirit of exploration is the most brilliant. For thousands of years, human beings have been expanding their understanding of magnificent nature, wonderful science and human beings with their tireless spirit of exploration. In the endless exploration of the unknown, mankind has built a colorful and fascinating world.
British philosopher Popper once said: "Scientific progress is a mixed blessing. This is a philosophical metaphor. Looking back at the development history of human society, we can clearly see that the reason why we can create more wealth in one century than at any other time in history is that our scientific research always brings good news. Without the progress of science and technology, we can't get rid of the poverty and backwardness of agricultural society; Without the progress of science and technology, there would be no industrial revolution again and again; Without the progress of science and technology, there would be no electronic age and colorful and comfortable life. However, the development of things has its duality, that is, the so-called "misfortune, happiness and misfortune." " 」
The development of science and technology has promoted the progress of mankind, and it is the development of science and technology that has given mankind this brand-new and beautiful life. Throughout the ages, which dynasty and generation did not attach importance to the development of science and technology? Looking back, the four great inventions are unique; Look at the astronomical calendar and marvel; Look at Zhaozhou Arch Bridge, which is beautifully designed; A glimpse of the oriental masterpiece compendium of materia medica: look at the value of pi, seven decimal places; Overlooking the Silk Road and developing the economy; Blue and white porcelain is very famous overseas. Scientific and technological development is the road to a strong country and the first driving force for the progress of the Chinese nation. How can we live a happy life today without science? Without science and technology, how can we have a comfortable material life and spiritual enjoyment? Without the progress of science and technology, how can you eat hybrid 2? How can I put on cotton-padded jacket and live in a tall building?
We are happy, we are lucky, and we have caught up with an era of rapid development of science and technology, an era full of high technology. This is not only because our ancestors chose development and progress in evolution, but also includes the unremitting efforts and hard study of all people. How many hard-working scientists have bought it with their wisdom and even their lives today.
Life is so comfortable, life is so pleasant and life is so wonderful. Our average life expectancy is 30 years higher than that in ancient times, and we don't even have to go out to visit relatives and friends. Isn't this all the benefits of scientific development?
While human beings are developing high technology, relatively, it has also brought great impact to the environment, biology and the earth. For example, Taiwan Province Province has changed from an agricultural society to an industrial society. Because of human industrial activities, the exhaust gas in the earth's atmosphere is increasing, and the greenhouse effect and acid rain are becoming more and more serious, leading to ecological problems such as river and lake biological death, building corrosion and global warming. In addition, although organ transplantation has saved many lives, the society has paid a huge medical cost, and there are also many bad phenomena, such as buying and selling organs, cloning technology, etc ... And how to strike a balance between scientific and technological development and human well-being in the future is a very important topic facing mankind now.
In a word, science is hard and honest labor, which enlightens people's wisdom and cultivates people's spirit of hard work and seeking truth and being pragmatic. Science is to explore and create the future and cultivate people's grand mind, broad vision, courage to explore and innovate; Science is developed in the struggle against fallacies, which cultivates people's fearless courage to pursue and defend the truth without fear of difficulties and setbacks. Science is the common wealth of mankind. It is incompatible with all opportunistic, mercenary and selfish behaviors. It cultivates people's noble sentiments and dedication.
Science and technology change history, and knowledge changes destiny. We have entered the 2 1 century, an era full of high technology. Science has changed our lives, and science has changed our destiny. "Knowledge is power". Why do we, the people of China, a vast country with a population of 65.438+0.3 billion, stand tall in front of the world? Because our technology is constantly developing! Our technology is constantly improving!
Use your imagination and write a scientific composition of 300 words. In 2029, technology was so advanced that I was already a computer operator in the company.
I was still in bed at 6: 30 in the morning, and the puppy couldn't wake me up, so I called the robot dog. I was very worried when I got up and saw that there was not enough time. So I asked my specially designed vehicle-mounted robot to send me back to work in the company.
I arrived at the company in less than a minute. Fortunately, I was not late, so I went back to work immediately, thinking: car robots used to be so fast, and now the technology is really more and more developed.
I was in a hurry when I first came out, and I haven't had breakfast yet! I'll call the refrigerator robot right away. I immediately input the food I need on the refrigerator robot. Six seconds later, all the breakfast I wanted was in my hand. Eat for a while and then eat.
Time goes by, it's time to have a rest. I went home and cleaned up during my break, so I should be able to go home again soon. As soon as I got home, I called the robot dog and said to the robot dog, "You finished the housework today." The robot dog said, "Oh." Because the robot dog is slow to clean, I called the maid robot, and the maid robot cleaned the house in less than 10 minutes. So I went to work again.
I think it will take 20 years to realize this development of science and technology, and it needs the efforts of our generation.
Everyone is familiar with the composition about science and technology. Simply put, technology is technology. In a broad sense, it refers to the sum of natural science and technology and social science and technology.
Since the reform and opening up, with the passage of time, science and technology have mushroomed in the motherland. Looking around life, technology is everywhere, and technology is by my side!
Walking on the road at night, there are electric lights to illuminate us; Call a friend and take out your mobile phone at your fingertips; Back home, turn on the TV to watch the news, turn on the computer and chat with friends; Mother steamed rice with a rice cooker; Turn on the electric heater; The whole family is sitting around, enjoying the delicious food prepared by my mother with an electric wok ... Do you think we can leave technology anytime and anywhere?
Technology is very useful! For example, if there is no electric car, it will be inconvenient for us to communicate with distant relatives and friends; If there is no EMU, it will be difficult for people to travel everywhere. Without the space shuttle, it would be empty talk for people to go into space; If there were no icebreakers, it would be difficult for us to go to Antarctica. Without space instruments, it would be just an illusion for humans to land on the moon. ...
On the contrary, with technology, our life will be better-with fax, our documents can be easily sent out in an instant! With robots, you can be in a space that people can't reach; Using laser, you can make fitness equipment; With air conditioning, people can feel as comfortable as spring even in hot summer. ...
It is not difficult to see: all this, people enjoy the achievements of science and technology!
This shows that technology has helped us create a superior living environment; Science and technology have improved our quality of life; Technology is the crystallization of the wisdom of people all over the world!
We are engaged in technology, and we should constantly learn new technologies!
Science and technology are around us, and we must vigorously develop science and technology!
6. A 300-word environmental protection composition based on science and technology: I learned to save water.
Saving water is closely related to the life of the earth and the future of mankind. Unfortunately, many people don't save water in their lives.
Before, my sister and I didn't save water. Sometimes, turn on the water when taking a bath, and don't turn off the tap in time when washing your hair. What a waste! Not only do I waste water, but my sister often turns on the tap loudly and sometimes forgets to turn it off. Just say that two days ago, my sister didn't turn off the tap, but went to play computer.
Now, our school has carried out the activity of "cherishing the water of life", and students understand that water is more precious than life! The teacher showed us terrible pictures of the water-deficient disaster area, and several students in our class cried very sadly. Only then did I know how important it is to save water! Whenever I see my classmates wasting water, I will take the initiative to remind them that water is precious!
I took these good habits home. I washed the toilet with dirty water after bathing, and watered the flowers with water for washing vegetables and washing rice. My sister is ashamed to waste water when she sees me saving water so much.
Now, our family doesn't waste water as before. I feel that wasting a drop of water is as painful as losing blood on the earth. Drops of water, a little bit of heart, merge into a river, benefit the world! Water, you are the most precious thing in life!
7. It is best to write inventions that are beneficial to the environment in the future scientific and technological composition of 300 words. One night, I had a dream about how advanced technology would be in the future, and I became a scientist myself. I invented four tools that are useful to society.
The first type: universal shoes. This kind of shoes can be changed at any time according to where you are, what season you are doing. For example, in the swimming pool, he will become a swimming shoe; In winter, it will absorb hot air and put it in shoes; In track and field competitions, it will become running shoes again; In the high jump, it will become spikes.
The second type: clothes that adjust the temperature. This kind of clothes is not only cheap, but also makes people feel fresh and cool in hot summer. In the cold winter, you can feel the warmth like spring, so that poor beggars can avoid the pain of cold and freezing.
The third type: universal capacity device. This container can collect rainwater in rainy days and is not afraid of stopping water. It can also absorb those waste batteries and lost power, and it is not afraid of stopping water.
The fourth type: high-tech cars. This kind of car can drive freely in the sky, on the road, on the water or on the hillside. The fuel it uses is solar energy, which will not cause pollution.
8. Scientific and Creative Composition 300 words Mom and Dad are busy inside and out every day, so I hope to have a robot that can help Mom and Dad.
Every morning when we get up, the robot makes breakfast. At noon, when we got home, the robot cleaned the house and made lunch.
When I got home in the afternoon, the robot made dinner and made the bed. It's so comfortable that I can have a good sleep! However, there is still a problem. If there is no electricity, robots will starve. What can we do? If the robot drags a long wire, it will accidentally knock us down or break the robot! If they are sent to the factory for repair, the workload of employees will be great. Can the robot charge itself? I want to build a robot that can eat vegetables. After the robot eats vegetables, the vegetables become energy in the robot, and the robot can move freely.
With this kind of robot, our life will be more convenient.
9. How to write a composition about junior three science in 300 words? In the second class this morning, Teacher Zhu took us to the laboratory to do experiments. "ding . "When the bell rang, we couldn't wait to enter the laboratory.
I found a place to sit down. Looking around in the seat, we found that our experimental materials are: salt, ice, iron cups filled with 1|3 water, and semi-dry and non-wet towels.
After a short class, we started the experiment:
1. Let's measure the water in the cup by temperature first.
Put the ice cubes in the cup and see how much the temperature of the water has dropped.
Put five spoonfuls of salt in the water and measure the temperature again.
4. Add ice cubes, add two spoonfuls of salt and mix well. During the measurement, it was found that the temperature plummeted, and soon, the temperature dropped below zero.
We'll talk about it later. After class, we picked up the cup, only to find that the towel was firmly stuck to the towel and had to peel it off.
This is really a special science class!
10. Science and Technology Creative Composition 300 words Mom and Dad are very busy outside and inside every day, so I hope to have a robot that can help Mom and Dad.
Every morning when we get up, the robot makes breakfast. At noon, when we got home, the robot cleaned the house and made lunch. When I got home in the afternoon, the robot made dinner and made the bed. It's so comfortable that I can have a good sleep! However, there is still a problem. If there is no electricity, robots will starve. What can we do? If the robot drags a long wire, it will accidentally knock us down or break the robot! If they are sent to the factory for repair, the workload of employees will be great.
Can the robot charge itself? I want to build a robot that can eat vegetables. After the robot eats vegetables, the vegetables become energy in the robot, and the robot can move freely. With this kind of robot, our life will be more convenient.