The development of telephone
In the communication kingdom, the telephone has become a prosperous family, but people's requirements are also constantly improving. With the rapid development of science and technology and the wide application of electronic products, a new generation of telephone family was born!
It was not until 1844 that Morse in America invented the telegraph. The invention of the telegraph opened up a new way for the development of communication. 1850, a young German named Busso put forward the theory of transmitting sound like telegraph. 1860, a German university professor, Les, modeled on the structure of the ear and made a sound transmission machine called "telephone". This is the prototype of our telephone.
But with the sharp increase in telephone demand, the manual telephone office is busy. Operators are often busy and thirsty, but they are still unsatisfactory. They are eager to have a machine to replace their work. 1889, the automatic switch was born! This machine can automatically connect wires and find and connect wires according to the user's "command". What does the user use to command automatic exchange? Automatic telephone solved this problem. It has a more round dial than a telephone. Every mobile phone has a number, although multiple numbers will never be repeated. The automatic exchange connects the line according to the user number and the called number. The original automatic telephone can only connect to a small area, so it is inconvenient to make long-distance calls with the telephone office. This has also developed into local direct dial, domestic direct dial and international direct dial telephone. Automatic telephone has taken another step forward. Until today, the popularity of mobile phones in the world!
The development and change of telephone is really great! It represents the progress of mankind, and we will move forward step by step! Let us young people in the new era witness every glory and progress of mankind!
Please don't pirate my answer, all rights reserved!
The greatest pleasure in life is to make a cup of tea, hold a roll of text, read it carefully and savor it in the dead of night.
I often fantasize that I live in seclusion in the mountains and valleys, and live a life far away from the hubbub and isolation. Together with Tao Yuanming, "pick chrysanthemums under the east fence and see Nanshan leisurely"; Fight for crossing, fight for crossing, open gull and heron beach and Li Qingzhao; Enjoy it with Li Bai's "Flying to the Three thousands of feet, Suspecting that the Milky Way has set for nine days".
The rustling yellow leaves close the window, reminiscing about the past and setting the sunset-Nalan
The autumn wind is bleak, and you stand quietly in the sunset. A cotton robe can protect the autumn chill, but it can't protect your sentimental and sensitive heart. Staring at the endless rustling trees, you meditate, and a long-lost smile appears on your handsome face. I know you are thinking about Lu again. I miss the day when she was scared by your thoughtfulness during your spring sleep, the joy of betting on books and pouring tea, and the dribs and drabs of "being the only way" again and again. A moment that should last forever has come and gone before I know it! Looking up at the castle peak and overlooking the green water, I want to cry without tears and sing without words, and my heart is full of sadness like an undercurrent.
Playing the piano and chatting in the face of life shows unyielding will-Ji Kang
Under a big tree on the outskirts of Luoyang, your tough and straight face is reflected on a piece of iron that has been beaten red. In your eyes, you would rather die than surrender, and there is hatred for the dark rule in your eyes!
"Bang, bang, bang", you took a hammer and struck the iron hard, which was a blow to the lawless politics of society at that time. You have deep sympathy for the dawn people who are struggling in hot water; You hate traitors who seize imperial power and kill celebrities. What burns in your chest is not piles of firewood, but a desire to rule the country and level the world.
You are like a phoenix. After being baptized by fire, you light up the darkness between heaven and earth.
Independent of the world, with a strong character-Yan Guang.
Your quick thinking, extraordinary speech and eloquent talent left a deep impression on the emperor. He gave you equal status. In front of you, you don't touch the secular spirit, treat the powerful as dirt, and treat money as dirt. Fan Zhongyan, who attracted the famous politician and writer of the Northern Song Dynasty, "Worry about the world first, and enjoy the world later", admires you beyond measure. He praised you with poems and said, "Emperor Guangwu took the red symbol in his hand and became an emperor, conforming to the times and ruling his subjects. Who can surpass him in the world? Only Mr Yan Guang surpassed him by virtue of his noble integrity. Mr Yan Guang's heart is brighter than the sun and the moon. His honesty can make greedy people clean and timid people stand on their own feet. Yunshan is gray, the rivers and seas are vast, the gentleman's wind is high. "
A scholar passed by Diaoyutai in Yan Ziling, preparing to go to Beijing to catch the exam. He dared not pass by during the day, so he hid his face at night. He even left a poem to laugh at himself: "You hide for fame and fortune, and I live for fame and fortune. I have no face to see my husband's face and cross Diaoyutai in the middle of the night. "
China celebrities: Ji Kang, Ruan Ji, Xie Lingyun ... As soon as this book was touched by their breath, it turned into a white chrysanthemum, which quietly bloomed on the earth and purified the world in Fiona Fang. They despise fame and wealth, just want to be friends with bamboo and make mountains their home. It is they who embellish the century-old history of China into gold! It is they who turn decay into dew and darkness into light!
As a person, although I can't live in seclusion in the mountains like them, I can learn from their indomitable and thirsty spirit!
Book fragrance grows with me!
Write a composition of about 300 words about your own development.
Dream, like a white cloud, floats dreamily in the blue sky where I grew up. Whenever I look at that beautiful cloud, I always have infinite reverie.
I liked reading when I was very young. Books always attract me deeply with their infinite charm. Books are a wonderful world, colorful, beautiful and full. There are magnificent fantasies, tortuous stories and touching fairy tales in the book. Hold my heart tightly and cultivate my young mind in the book.
Books have enriched my childhood. Therefore, I have a dream in my heart: I want to be a writer and bring joy to everyone with my pen. I secretly fantasized that I was absorbed in writing an article on a big desk. The thick manuscript paper on the desk became a thick pile. ...
Childhood dreams. Just like innocent clouds floating carefree in the blue sky of the years, they affect my childlike innocence all the time. Writer-this dream of the future has taken root in my heart and is engraved in my memory.
Gradually, I grew up and fell in love with literature. I have been fighting for my dream. I keep reading heavy classics, hoping that those talented masters can give me inspiration and enrich my emotions; In writing class, I humbly ask the teacher for advice. In order to improve my writing ability, I insist on observing my life and recording my feelings. The writer's dream has sprouted in my heart. I use all my sweat and hard work to water it, care for it and look forward to its rapid growth. In my eyes, the clouds on the horizon are no longer far away. I will try harder to get close to it and touch it.
The passage of time, persistent persistence and hard sweat finally made my dream kiss me for the first time. Looking at the sudden appearance of departmental articles with their own names in newspapers and periodicals. I am ecstatic. I kept rubbing the concave and convex handwriting and greedily sniffed the fresh fragrance of ink. My dream has finally sprouted in my heart.
The dream at this moment is no longer like a childhood fantasy, absurd and blurred. It's right in front of my eyes. Although I haven't really become a writer, I firmly believe that this is no longer an unreachable dream. I will work harder and make progress towards my dreams, so that the seedlings of my dreams can grow sturdily and become towering trees.
I firmly believe that my future is not a dream! As long as I always want to develop myself!
4. Write a short essay with the development vision as the main topic. There is a saying in Sima Xiangru of the Han Dynasty: "A wise man has foresight before he sprouts." Foresight is the key to the success of a wise man. Throughout the ages, discerning people can often know the distance from the near, everything from the micro, and the future development trend from the scene in front of them. The omniscient can deduce universal laws from individual things; People who know from the micro level can think about the way out from the subtle things. Although these three things are small, they are really the magic weapon for smart people to win. Therefore, it is a unique vision to know its proximity, its ten thousand, and its smallness. A discerning person can know it from a close distance. The world is full of people. People are often crazy in love, but they don't know anything. Real estate has fallen into a state of no market value. But Li Ka-shing had a flash of inspiration. He quietly bought abandoned land and old buildings in decadent business. Finally, when the business sector recovered after 20 years, it emerged as a new force and ruled communist party. Li Ka-shing's bullying is really a well-known effect. Therefore, people with vision are actually the key to getting rich. A discerning person knows everything. None of them are strange. Save it from the trough. This truth is to know all by one part and all by one. People who know everything are good at ordinary things and get useful people from themselves. Lang Qingshan is pure-minded and occasionally gets a message from his friends. Because of his quick response, he became the focus of everyone and was rich. Everything you know, everything you can say. The nine-story platform starts from the foundation. Small things are really cherished by those who achieve great things. Jews have a unique vision, look closely at the growth of Japan's foreign trade, analyze its subtle differences, deliberate and act decisively, and finally break into Japan's financial market and make a lot of money. With a little knowledge, Jews will eventually shine in Japanese financial circles and make countless Japanese entrepreneurs feel ashamed and sigh. People with vision are sincere. Wang Anshi said, "Don't be afraid of clouds covering your eyes, but seek the highest." I have a unique vision, as if I were on a high place and I had a panoramic view of the whole world. Knowing the distance, knowing the end and knowing the micro are the three swords of a wise man. Only with a unique vision can I achieve great things.
5. Write a composition on the topic of "the future" and ask how to go in the future (argumentative). The development of society has entered a new era: both the speed and the scope of development far exceed any historical period. The society is developing rapidly and the world is constantly changing. It is really hard to imagine what the future society will look like. Looking forward to a bright future, we are full of confidence and hope to meet the sunshine of tomorrow, but at the same time we are a little confused. From the factors that promote social development in recent years, we can easily find that the proportion of information is increasing. Market information, social information and international information all affect the political, economic and cultural development of individuals, regions, societies and countries to varying degrees, and then affect the development direction and strength of the whole world and mankind. The world is like a big net. All countries and people are covered by the internet, and information is every thread of the network, which affects everything in the network. The whole society is developing in one direction, but things in society are developing in different directions. They are colorful. Different people have different levels, so do their knowledge structure, ideological level and moral level. There are more and more industries in society, and different industries choose different people. People's occupations vary greatly. Different people have made different contributions to society in different posts. Therefore, the scope of social development is getting wider and wider. Because different fields need different knowledge, there are more branches and more knowledge in various disciplines. All these indicate that social development has a diversified trend. Social development is like a train running in the fast lane. The speed only increases. This can be seen from some obvious phenomena in society. First of all, the time for updating knowledge is shortening constantly, and new knowledge and technology emerge day and night, just like an inexhaustible spring. And the speed of personnel flow is also beyond the past. Staying in a position for a lifetime will become history, and layoffs and reemployment will become more and more frequent. People's inter-regional mobility has also become commonplace. People's lifestyles are changing rapidly, and it is natural for the social wheel to accelerate. These * * * all illustrate a problem, that is, social development is characterized by informationization, diversification and high speed. If you want to live better in the future society, you must conform to the social development trend, change your ideas and keep pace with the times. Social informatization is like an invisible hand. It provides us with a lot of intangible but valuable information, which is convenient for us to grasp the pulse of society and the opportunities in life. However, informatization has also brought some problems. The rapid emergence of information is like a flood. In all this information, there is bound to be a mixture of good and evil: there are many valuable information, but some useless and even harmful information is not excluded. Objectively speaking, positive information will improve the spiritual and material living standards. However, negative information can do harm to people. Therefore, how to accept and use information is very important. In an era full of information, each of us may come into contact with negative information while being exposed to positive information. However, what matters is not what we saw, what we heard and what information we received, but what we adopted, absorbed and took. From positive information, we can easily get valuable things, produce positive actions and achieve success. For negative information, we should learn to turn waste into treasure, see the shortcomings and learn from them, so as to accumulate experience and avoid detours. To realize this change, we must have a broad mind and a critical eye, be able to strip away the appearance, recognize the essence and choose to accept it. Therefore, it doesn't matter to us whether the information is good or bad. It's just a matter of whether we choose or not. Social diversification is stratified by knowledge and skills, and industries with high technology content naturally choose people with high knowledge and skills. At the same time, the requirements of social diversification for scientific and technological content and knowledge level are not fixed, and their standards are getting higher and higher. Knowledge level is a person's internal implication, and skill strategy is an external display. In the future, society will focus on skills. What matters is not only how much you have mastered, but also how much you have applied and played. People with low level of knowledge, lack of theoretical guidance and support, their skills will inevitably be limited to a certain range. Those who are empty in knowledge and cling to theories will only be white-faced scholars who talk eloquently but have no hands tied to chickens, and are of no value to society. Therefore, for individuals, knowledge level and skills are equally important. Both should not be neglected. The future road is to promote learning by application, apply what you have learned in learning, apply what you have learned in learning, and completely unify learning and application. Another requirement of social diversification is to pay attention to comprehensive skills rather than just unilateral skills. With the increase of social points, lines and areas, the links between points and areas are getting closer and closer. Only with all kinds of abilities can we grasp the overall situation and make overall plans. Be competent for our own work. In order to conform to this trend, we should not only have a fixed ability to accept and master knowledge, but also cultivate the ability to use knowledge flexibly in connection with it and comprehensive knowledge, and seek similarities and differences from what we have learned, so that they can be integrated, promoted and integrated into an organic whole. Only in this way can we give full play to our knowledge, gain the greatest benefits and realize our beautiful dreams.
6. Write a short composition that looks at people from a developmental perspective. People with about 300 words are not things. He is a constantly developing life. At every moment of his life, he is becoming but never becoming the person he can be.
In the process of people's growth, academic performance has soared like blue chips. After all, only a few people, such as Hua and Balzac, did not show their talents when they were young. There is an old saying in China: You look young at three years old and old at seven. In fact, this is a static concept of seeing people. In most cases, it is impossible to predict a person's career achievements from his childhood performance. In that case, the teacher is not a teacher but a prophet. Therefore, in the process of education and teaching, students should be treated from a developmental perspective, not from a static perspective, and the immediate performance of students should not be regarded as the only criterion for evaluating students. Students are in the process of growth, with strong plasticity and great potential. I firmly believe that "development is the last word" for students.
First of all, looking at students from a developmental perspective means paying attention to students from a dynamic perspective. There is an old saying in China, "Say goodbye three days, be impressed", which just reflects such a dynamic vision. Development means change. As a developing individual, children's changes are eternal. The child's potential ability is unlimited. As someone said, a student's potential is qi. He is as big as you give him space.
Looking at students from a developmental perspective is also looking at students' personalities from a unique perspective. Modern theory of children's physical and mental development tells us that under the premise that children's physical and mental development has the same characteristics, compared with the whole, each specific child's physical and mental development may have its own uniqueness in form, content and level. The reason is. Every specific child's intelligence level, cognitive level, living environment and hobbies are different at a certain stage. Teachers should not treat students with mechanical, frozen and static eyes, but should respect individual differences and promote healthy development. Therefore, we should understand and care about students' individual differences, be good at capturing and discovering each student's spirituality, cultivate them, cultivate their self-confidence, and promote their individuality and specialty to be fully displayed and perfected. This is the proper meaning of development.
Looking at students from a developmental perspective is the basic idea of the new round of curriculum reform and the basis for forming a scientific view of students and evaluation. Looking at students from a developmental perspective means treating our students as living people with rich thoughts, emotions and personalities, respecting students' individual differences, choices, emotions and personalities, and providing a relaxed environment for the publicity and improvement of students' personalities.
As time goes by, yesterday's teenagers grow up slowly, which is the natural trajectory of life. The ignorant mind shines with the brilliance of reason, which is the proof of the development of human nature. Teacher, believe in your students and believe that they will achieve something! Look at students with a developmental perspective, even if they can't become "tigers", let them become excellent "rabbits"!
7. Write a composition on the topic of "Development of China" and open a long scroll of China history. There are endless magnificent mountains and rivers and uninhabited wilderness plains; There are glorious and prosperous proud chapters, as well as tortuous and tragic humiliating pictures. Ah, this is my motherland-China, a country with ups and downs of fate.
From that ancient era, from the source of the long river of history, China has been flowing to the present. The river is clear and turbid, sometimes turbulent, sometimes calm and peaceful. I think everyone in China should understand this. What it left us is the 5,000-year-old culture carried by China.
This culture has been passed down to this day. What is my motherland like today?
Backwardness, poverty and ignorance-this pile of mud that has dragged us down for too long has long been thrown away. Now, in China's dictionary, only these words are printed: Struggle! Development! Innovation!
What a vibrant and energetic school! This is the king's demeanor as an oriental lion!
That's true. China is proving itself to the world with actions.
Hong Kong and Macao have returned to the embrace of the motherland one after another, and the door of the World Organization has also been opened to China. On July 13, 2003, on this memorable day forever, it took over the flame that had been waiting for four years with strong arms and will be lit in 2008. Isn't this series of exciting news the best proof of China to the world? He wants to stand up, stand on the plains of Asia and shout! China's history is ancient, but its heart is just the opposite of this ancient era!
Developing, developing, developing ... This is China, ready to go, the voice of the motherland's heart beating, starting every vibration of the eastern land.
I see that Beijing and Shanghai, two bright pearls, complement each other and shine brightly to illuminate the world.
I saw that once arrogant superpower shaking hands with China in a friendly way.
I see that the living standards of the people in China are constantly improving.
I saw much more than that.
Now, China, my motherland, has laid a thick layer of paper, stained with carefully studied ink, and written a new chapter. As strong as flying, how many pairs of respectful eyes have you attracted? I don't know, because I'm not alone.
8. Ask for an essay about the development of China. The development of China.
Open the long scroll of China history, and you will see endless magnificent mountains and rivers, as well as uninhabited wilderness plains; There are glorious and prosperous proud chapters, as well as tortuous and tragic humiliating pictures. Ah, this is my motherland-China, a country with ups and downs of fate. From that ancient era, from the source of the long river of history, China has been flowing to the present. The river is clear and turbid, sometimes turbulent, sometimes calm and peaceful. I think everyone in China should understand this. What it left us is the 5,000-year-old culture carried by China. This culture has been passed down to this day. What is my motherland like today? Backwardness, poverty and ignorance-this pile of mud that has dragged us down for too long has long been thrown away. Now, in China's dictionary, only these words are printed: Struggle! Development! Innovation! What a vibrant and energetic school! This is the king's demeanor as an oriental lion! That's true. China is proving itself to the world with actions. Hong Kong and Macao have returned to the embrace of the motherland one after another, and the door of the World Organization has also been opened to China. On July 13, 2003, on this memorable day forever, it took over the flame that had been waiting for four years with strong arms and will be lit in 2008. Isn't this series of exciting news the best proof of China to the world? He wants to stand up, stand on the plains of Asia and shout! China's history is ancient, but its heart is just the opposite of this ancient era! Developing, developing, developing ... This is China, ready to go, the voice of the motherland's heart beating, starting every vibration of the eastern land. I see that Beijing and Shanghai, two bright pearls, complement each other and shine brightly to illuminate the world. I saw that once arrogant superpower shaking hands with China in a friendly way. I see that the living standards of the people in China are constantly improving. I saw much more than that. Now, China, my motherland, has laid a thick layer of paper, stained with carefully studied ink, and written a new chapter. As strong as flying, how many pairs of respectful eyes have you attracted? I don't know, because I'm not alone.
9. Write a composition about future development 1. Imagine the future. With the rapid development of science and technology, great changes are taking place in our motherland.
So, what will the future world look like? The house of the future is a flying house. Every house has a big screen, which shows the whole picture of the house. When you press the red button, the roof will immediately separate and the propeller will rise and keep turning. Wherever you want to go, just turn the steering wheel, just like driving. This way, the traffic is very convenient, just like a butterfly flying around in the sky, which is very interesting! If your house falls on the green grass, it will turn green immediately like a chameleon.
Future patients do not need to see a doctor at all. On the contrary, a very small robot is used to get into the patient's stomach from his mouth. The robot will kill all the germs in the patient's body, so as to avoid the pain caused by the operation.
The road ahead is transparent, like glass. Looking down, it can reflect everything on the ground and shine in the sun, but it is not glass. It is made of polymer building materials and coated with a layer of polishing agent, so that people and cars will not slip when walking on it. In short, the future is brilliant and advanced. We must study hard for a bright future! 2. Imagine the future. I stood on the balcony and looked at the distant scenery. The building looks so magnificent in front of my eyes, which makes me have a lot of reverie. Our motherland is changing with each passing day. In the near future, it will surely become a modern and prosperous country standing in the east of the world. In my reverie, I can't help thinking about what my motherland will be like in 20 years. How will our lives change? In the morning, beautiful music came from the pillow, reminding me that it was time to get up. I stood up in a daze, pressed a button and the scanner started. It glows red, scans my body and pops out a dress. I opened my arms and the skirt slipped in automatically. This dress is advanced, warm in winter and cool in summer, and it will change with my figure. Very comfortable.
Get dressed, take a shower, and it's time for breakfast. I went to the kitchen and took out two most popular environmentally friendly fruits. These environmentally friendly fruits have various flavors, so you can choose according to your own preferences. Cherry flavor is always my favorite. Although it contains essential nutrients and calories. After breakfast, I came to the window and glanced at it unintentionally. The green earth seems to be shaking. When I took a closer look, all our houses stopped in mid-air. It turned out to be an earthquake, and our house flew into the air, and people didn't know it at all. This is an automatic house, which can adjust the indoor temperature according to the owner's needs. Change the color of the room according to the owner's mood.
It's time for lunch again I haven't had time to buy food. Don't worry, look at me. I turned on the computer, entered the online shopping mall and put my favorite dishes in the shopping cart. Soon the food will be delivered, just washed! I put them in the smart pot, and in a short time, dishes of various colors and flavors are ready. Today's staple food is environmental protection hamburger, which is not only delicious, but also nutritious. Oh, yes, I have to go abroad to do something. This time I took a flying saucer that everyone has. It's small enough to fit in my pocket. I pressed the red button, and the flying saucer gradually became bigger. I sat in it without driving. Just enter the address of the destination and press the green button, and it will arrive in a few minutes. When I finished, I went home in the blink of an eye, pressed the blue button, and it lit up immediately.
This flying saucer has no tail gas and noise, and is an ideal means of transportation. At night, with a soft lullaby, I fell asleep ┅ ┅ This is a day in 2024, how about it? It's amazing! As long as we study hard and work hard, we will realize our dreams in the near future.
I firmly believe that our dear motherland will continue to take off and its future will be more brilliant. Look at the tall and powerful horse in the future! Don't underestimate it, it is a famous horse in the 99 th century! It is more than two meters high and 3.5 meters long, with shiny brown fur. It is not only tall, but also very strong. Its whole body is covered with muscles, its legs are thick, its neck is thick and long, and even its internal organs are covered with muscles, making it invulnerable.
The most shocking thing is that it has a pair of wings, which can stretch freely. With it, horses can fly! Unlike horses today, horses in the 99 th century have stopped eating grass. Eating grass is not environmentally friendly, so we eat garbage and pests. Look, it is wolfing down in the garbage, eating with relish! After a while, a pile of rubbish was swept away.
Its digestive function is unparalleled, even if there is more garbage, it can finish it, and there is no need to worry about it defecating like a horse before, because it can transform what it eats into nutrition and energy, and it can also predict which day it will lack energy and store it in advance! In the past, horses were very timid. When they met a loud noise, they would feel scared and even run away, but horses in the ninety-ninth century were completely different. They won't run away even if they encounter an atomic bomb, because their skin is as hard as armor and no weapon can attack it. Its most magical place is not these, but its "housekeeping skills"-amazing speed.
Look, it is catching up with Osama bin Laden, the world's number one terrorist! Bin Laden was trying to escape on a Su -30 plane when he disappeared with a whoosh. Haha, don't think that bin Laden will escape as smoothly as before. Look, the horse spread its wings and stopped in front of bin Laden with a swish like Shenzhou VI, blocking his way, only to see two net bombs shot from its wings and dispersed into a huge net. Everyone says that horses in the 99 th century are extremely brave. Actually, you don't know yet. It also has the magical "closed qigong", because with it, it can prevent sandstorms and dive! It is also a multi-functional means of transportation! ! Can be varied, do whatever you want! ! How's it going? Let's take a time machine and have a look! ! Good luck.