Perception and experience of scientific and technological development 1
In a blink of an eye, human society has developed into an amazing "pluralistic" society. It has changed our life and filled our life with the breath of modern science and technology, such as smart phones, computers, televisions, electronic pedometers, learning machines and so on. Even children's toys have different functions: a top that can be divided into three parts, a top that can be accelerated manually, and an explosive yo-yo that won't stop spinning when grasped by hand.
Science and technology benefit all mankind and make our earth better!
One night, our family had dinner together. Grandpa looked at the sweet and delicious rice I brought him and couldn't help but sigh: "How developed modern technology is! You must cherish this wonderful life. At that time, it was enough for us to drink a bowl of gruel every day. Everyone ate bark and leaves! Now rice and all kinds of vegetables and fruits are planted in greenhouses, and foods with high nutritional value can be eaten anytime and anywhere, regardless of spring, summer, autumn and winter. "
My mother also agreed with my grandfather's point of view and nodded and said, "Yes, although our living conditions were better than your grandfather's when we were young, if we were hungry, there would be no nutritious food to eat." Cold dry rice and boiled water are our favorites. " Nothing is sterilized at high temperature and packaged aseptically like the milk we drink now. We can't even drink it if we want! "After listening to my grandfather and mother, I also learned to observe the world and appreciate life with my eyes that are good at discovering.
At that time, I visited the bonded commodity exhibition and trading center where my father worked.
As soon as I entered the hall, I was dazzled by the dazzling array of goods. Suddenly, the African imported fruit exhibition area attracted me and made many people stop and linger. Among them, the thorn melon is very interesting. Its appearance looks like a golden hedgehog, but its meat is extremely delicate and delicious. There is Huang Jinguo, also known as five-finger eggplant. There are five big "fingers" under the eggplant-shaped body, which surprised me.
What impressed me the most was my carefully selected pocket pumpkin-African Sun Fruit. The taste is sweet, and it can also be stewed with rock sugar and honey. It's really delicious in the mouth and sweet in the heart. Wipe my drooling glutton, as if coming to Africa, once again let me feel the changes of the times and the great development of science and technology!
Students, while enjoying the happy life brought by science and technology, we should also strive to be small experts in science and technology, study hard, be good at discovery and creation, and make contributions to future scientific and technological progress and social development!
The article expresses the theme of writing through two things-technology has changed people's lives, with rich content and detailed description. But in the future, we should pay more attention to typos and continue to refuel!
Understanding and experience of scientific and technological development II
With the development of science and technology, we have entered a new era-the information age. The changes brought about by development are changing with each passing day. With the help of science and technology, our way of traveling has changed greatly and our living standard has also improved greatly.
Five years ago, the light rail only had Line 2, and people mostly traveled by bus or private car. As a result, not only the urban roads are congested, but also the exhaust emissions are increased, which seriously affects people's travel and health. However, in just five years, the light rail has developed rapidly from two lines to 10 line, connecting the two rivers and three banks in Chongqing. It used to take us an hour to drive to the university town, but now it takes 20 minutes to get there by 1 line, which greatly saves people's travel time. Because the light rail is driven by electricity, it will not emit harmful exhaust gas, reduce the composition of PM2.5 in the air and ensure people's health.
One car of light rail can accommodate 1000-200 people, and 5-8 cars of light rail train can accommodate 1000-2000 people. I used to go to school by my mother's car, because my family had to go to school through the Yu' ao Bridge. This bridge is often congested during rush hours, which makes me often late. Now I go to school by light rail, and I have never been late. Therefore, many office workers and students choose light rail to travel. In this way, the traffic pressure in the city is greatly relieved, and people who travel by car are unimpeded, saving a lot of time.
Most of the light rails are built underground or in the air. The light rails are narrow and long, which effectively saves the space occupied by the light rails, so that people living in Chongqing will not feel nervous and oppressive. The light rail is connected with two thick iron pipes and moves by electricity. The whole process is silent, so that people living next to the railing can enjoy a silent life.
Light rail provides convenient and efficient services for people's travel, but it also has "artifacts" that greatly improve people's quality of life. They are household names-Alipay and WeChat.
Five years ago, Alipay and WeChat were mostly used by young people. Now, more and more citizens are using it, and even small vendors selling fruits on the roadside are using Alipay and WeChat. What impressed me the most was that once I came home from school, I saw an aunt who wanted to buy fruit, but because she had no money with her, she had to stare at the fruit for a few seconds. The fruit vendor had a brainwave and said, "You can use Alipay or WeChat." Aunt was so happy that she quickly chose her favorite fruit, then "swept it" and bought the fruit she wanted.
Alipay and WeChat have many functions, such as calling a car, ordering take-out, paying utilities, recharging mobile phones and so on. People can solve all the problems in your life by moving their fingers without leaving home.
Alipay and WeChat are both easy to operate. My 65-year-old grandmother learned how to use it in an hour. Now, when she goes out, she can use her mobile phone to take food and daily necessities home. Outsiders call her a fashionable old lady.
With the development of science and technology in China, people's travel and life become more and more convenient. We can't imagine how convenient life will be in the next five years, but we are grateful that this convenient life has brought us into a new era.
Understanding and experience of scientific and technological development 3
There have been many inventions and discoveries since ancient times. It is these inventions and discoveries that have promoted the development of science and technology and changed our lives bit by bit. Today, I have a deeper understanding of technology by chatting with my parents.
After dinner, my father turned on the TV. On the TV screen, we saw a picture of a farmer's uncle happily harvesting wheat with a harvester. In the picture, the harvester collects wheat quickly, with ears of wheat collected here and grains of wheat produced there. Seeing the farmer's uncle in high spirits, he must be thinking: technology is so developed, and this year's crop designation is another bumper harvest!
Seeing this picture, I can't help but sigh: "The convenience brought by technology is really everywhere!" "Yes, when we were young, there were no harvesters! Planting crops can only rely on human and animal power. If the weather is sometimes' unhappy' and there is another natural disaster such as hail and drought, it is unimaginable! " Dad sighed deeply. ""Not only agriculture, but also other industries. " Mom added, for example, in industry, what about some dangerous and difficult jobs? People use advanced technology to invent robots to do it for others, which is much safer and more convenient! ""As the new owners of the 2 1 century, we must study hard and cherish our present life! "I swear in my heart.
Technology changes life, and technology makes many impossible things possible. In the past, traveling around the world was very difficult. But now people have made high-speed trains, cars, ships, planes and other means of transportation. They will be in Shanghai tonight and may be on the streets of Hong Kong tomorrow morning. Man landed on the moon by spaceship, which made the myth of "the Goddess Chang'e flying to the moon" come true. The famous philosopher Russell once said: "In the final analysis, it is science that makes our era different from the previous era!" In short, technology exists in every aspect of our lives bit by bit. Technology has changed our lives.
Technology makes the impossible possible; Science and technology can greatly improve our living standards. Today, through talking with my parents, I deeply understand that technology changes my life! We should make good use of and develop science and technology! We should study hard at an early age, form a good habit of loving and practicing science, and let science benefit all mankind and make our life better when we grow up!
Understanding and experience of scientific and technological development
With the rapid development of science and technology, our life has undergone earth-shaking changes, and science and technology have made life better and happier!
In the past, people missed their distant relatives, or something important happened and wanted to contact their distant relatives. They usually write letters, which is time-consuming and laborious. Nowadays, high-tech electronic products-computers have unconsciously entered people's lives. As long as you click the mouse with your hand, your friends who are far away will receive your email in an instant. Or video chat, through face-to-face contact, narrowed the distance between each other and enhanced feelings.
The internet has also brought convenience to people's lives, and people like to travel in the online world! Sit comfortably in front of the computer, enjoy wonderful music, press the mouse leisurely, and you can buy back what you need without leaving home. Food and clothing can be found on Taobao, and the price is cheaper than that of physical stores. It's really good and cheap!
In the past, going abroad across the ocean was a distant dream. Now, this dream has come true. The emergence of high-tech means of transportation-airplanes, will transport people to all parts of the world smoothly and quickly! It takes several days and nights by car and boat, and it can be easily reached by plane for several hours. Flying is not only comfortable, but also saves people a lot of precious time. It's killing two birds with one stone!
Science and technology have also made medical technology develop rapidly, and people's quality of life has been greatly improved. Many previously incurable diseases have now been treated, alleviating the suffering of patients and saving a large number of dying patients. Nowadays, the advanced medical technology has made those who live in the dark world see the light again, which is really lucky!
It is technology that has changed our lives and made our lives so wonderful!
Understanding and experience of scientific and technological development
Human beings grow up in social development, and human thinking is constantly trying in development. Things are organic combinations, and biological or abiotic things can change people's views on them. Using these to create what people need is called technology. Using it on the basis of science and technology is called innovation. Innovation is diversified, and if it is used well, it will certainly benefit mankind.
People also have two sides, and their ability to observe and judge things is instantaneous. For example, Newton's law of universal gravitation is obvious to ordinary people. No one thought, no one analyzed. Before Newton appeared, people thought that "theism" was "benefiting" people. This foolish idea has no scientific basis. However, Newton happened to find apples falling from the sky, and thought that one of them had some kind of "power", and this power came from outside the earth. At that time, no one dared to imagine these so-called things outside the earth. It was Newton who discovered this falling body that led to the so-called technology. There are many such things, for example, radar is invented by using the echo of bats, and ultrasound is invented by using the sound of dolphins.
The charm of science and technology exists not only in some living objects, but also in inanimate things. People can choose technology. If we innovate simple things and use them in useful places, we can create many new things, such as the invention of lasers, electric lights and computers. We all know Bill Gates. Without his invention, the computers we know would only be typing, computers and these simple things. These may be unknown so far, so they have changed from single to multiple.
However, due to human innovation in things, some things are harmful to the native earth, and the increase of carbon dioxide is harmful to the environment. Therefore, we should pay attention to protecting the environment while inventing many new things, otherwise the near future will be like the "20 12 doomsday" mentioned in the book, and this result is not what anyone wants.
With the rapid development of 2 1 century, we must understand the beauty, charm, frontier and beautiful things brought by science and technology, but it is not enough to rely solely on science and technology. These so-called technologies are all created by human beings themselves. While new things are constantly replacing old things, we must understand what is good. Using good things in useful ways will certainly develop and bring good and positive things to people, so we believe in the power of science and technology.