It has been 202 years since the birth of the first stethoscope in the world. 18 16, French doctor Lei Naike invented the stethoscope. This year, clinical medicine has taken a big step forward.
Before the invention of stethoscope, doctors basically used the ear close to the patient's chest to check the diagnosis of cardiopulmonary sounds. But this is really inconvenient. When treating an aristocratic lady, Lei Naike suspected that she had a heart attack, but in order to make the diagnosis accurate, it is best to listen to the heart sounds. Obviously, it is not appropriate to auscultate patients directly by ear. Lei Naike paced up and down the living room, wondering if he could use the new method. It suddenly occurred to him that when he was a teenager, he played with wooden poles to transmit sound. He found a thick piece of paper and rolled it tightly into a cylinder. One end of the cylinder was placed on the noble lady's heart, and Lei Naike put her ear close to the other end. Lei Naike clearly heard the heartbeat of the noble lady. She did have a heart attack. Lei Naike gave her a prescription.
When Lei Naike returned home, he immediately had a hollow wooden tube specially made. In order to carry it easily, he divided it into two sections and connected them with wires. This is the first stethoscope in the world.
Thanks to the invention of the stethoscope, Lei Naike can diagnose many chest diseases, and he is also honored as "the father of chest medicine" by later generations.
Science comes from life, innovation is good at discovery and exploration. We should be good at observing life and draw inspiration from scientific inventions.
College entrance examination 400-word composition II. Theme stability: showing a distinct era.
The composition of the second volume of the new curriculum standard inherits the tradition of the previous national volume, which is similar to the idea of "If I live with my hero for a day" in this year's Beijing volume and "Fan Er" in Tianjin volume. The word "contemporary" embodies the distinctive characteristics of the times, and the theme is still within the scope of hot topics, that is, paying attention to society and life.
The word "elegant demeanor" can be used to refer to people's demeanor, spirit, prestige and ideal pursuit. The pursuit of the three just echoes the theme of encouraging innovation, being pragmatic and dedicated, and sharing dedication. It has nothing to do with one's birth and status. As long as everyone finds a suitable position in social life, they will have their own bright spots, and society will be more colorful and better because of these people with different life pursuits.
Second, fine-tune the form: encourage diversity and free expression.
This year's essay topic has been fine-tuned in form, and the combination of material composition news and discussion has been adopted, so that students can quickly enter the situation of "graceful character selection", and the way of asking questions is a test of students' independent thinking and free expression ability. The theme of this composition has multiple perspectives: innovation, pragmatism, dedication, greatness in the ordinary, personal interest and social dedication. ...
Students have enough space to make up their minds. They can choose a "style" from three people and turn it into reality. Whether they choose narrative style or argumentative style, they can fully reflect their individual value thinking and even regard it as the value pursuit of future life. In this sense, this composition topic is a good topic in this year's college entrance examination composition.
Watching the news in the morning, an old man continued to take the 12 college entrance examination in order to realize his college dream, and failed every time. In the face of this year's college entrance examination, the old man is optimistic and will live forever. I am really touched by his spirit here.
In June, many students used their last efforts to sprint, watered their hopes with sweat, paved a flat and bright future with the once bumpy mountain of books under their feet, used the once vast sea of learning beside them as the pier on the way forward, continued the hope of backward students with the once immature pen in their hands, and greeted the honor and glory they deserved with the most calm smile.
The college entrance examination may have injected too much fame, interests and desires into our eyes, and what we care about is the final result; However, for these old people, what he cherishes more is his own efforts and an unforgettable life course, in which he has too many unspeakable feelings. Therefore, no matter whether it is sunny or cloudy in Wan Li this June, please don't easily deny his journey. If it succeeds, congratulate him sincerely. If you encounter setbacks, give him courage and confidence. Think of this as his first experience in life!
Every year of college entrance examination, every year of life. This old man has been influencing us with his actions, friends, come on! The future is in our hands.
Shelley said, "If winter comes, can spring be far behind?" Shelley added: "No matter what kind of sky is overhead, I am ready to withstand the wind and rain." All experiences are wealth, and all encounters are enriching themselves.
Friends, if you fail, look at this old man. He fell and got up, but he was still in a hurry. As always, he fell, got up and reweaved the ideal warp and weft. Life has not failed. As long as you study all your life, you will find your own success.
If the study in recent years is compared to long-distance running, now is the final sprint stage of long-distance running. Some people give up because they are too tired; Some people slack off because they are ahead; Some people stick to it, sprint hard and run to the finish line. When the whistle sounded, the game was over and the quitter failed to reach the finish line; Lazy people are often surpassed by others; Only those who persist will win the final victory.
Some people may think, there is only a short month left, what impact will that have on the college entrance examination? In fact, the state of the last paragraph will directly affect your state in the examination room. If the state is not good, I'm afraid few people can play well. Every year in the college entrance examination, students feel good about themselves, and it doesn't matter if they relax in the last period. They didn't listen to the advice of their parents and teachers, and as a result, they didn't perform well in the examination room. Only in this way will they regret it. Instead of regretting at that time, it is better to stick to it now and walk the last journey in a down-to-earth manner.
Su Wu stayed in Hu for nineteen years, persisted in the desperate situation and left a commendable reputation. Xuanzang learned Buddhism from the west, went through difficulties and obstacles, persisted in the end, and obtained the true scriptures, which made contributions to the spread of Buddhism in the Tang Dynasty.
The ancients said: "Perseverance can open the stone." Indeed, persistence can work miracles. China women's volleyball team has been at a low ebb after its glory. Poor grades should make them slack off, but they still insist on practicing hard. At the Rio Olympic Games, they gave full play to the spirit of persistence. In the face of initial failure, they didn't give up, and finally turned defeat into victory, creating a miracle. We should stick to it like them and create our own miracle in the college entrance examination.
In this final sprint stage, we have to run to the finish line and stick to the moment of final victory!
Looking at the post-60s in their eyes, I have good expectations for them. College entrance examination composition: They are very sunny and healthy. Because people born in these times, whether in the 1960s, 1970s or 1980s, have experienced the trauma of some times, and they all have some psychological pains in the process of growing up. However, the post-90s children got rid of these injuries from birth. In their time, the information they received told them one thing: "I am great, my life is the best, and my country is the best", so the children born after 1990 are not morbid, they are sunny and healthy.
As a post-60s generation, when I heard the topic of "I said post-90s generation", my first feeling was "dizzy". Because this topic is simple but broad and looks simple, it is actually a deep topic and a composition suitable for the examination room. If I finish writing such a college entrance examination composition, there is still a lot of room for expansion of this topic. I abandoned the rigid propositional thinking under the exam-oriented education in the past, and I can talk about it in combination with my own life experience, so there is a lot of room for free play.
If the post-90s children are asked to write "I said post-90s", just as people in the 1960s wrote "I said post-60s" and people in the 1970s wrote "I said post-70s", if they want to write more weighty and valuable, they need profound experience and a lot of life.
Why does the distance between six words in the 400-word composition of the college entrance examination produce beauty? Probably because distance allows people to grasp things macroscopically, and more importantly, distance brings unknown mystery and triggers people's beautiful fantasies.
Before the United States landed on the moon, beautiful legends about the moon, such as the Goddess Chang'e flying to the moon, were already circulating in China. However, when the astronauts brought back a few cold stones and sent back some "devastated" photos of the moon, fairy tales and legends ceased to exist. From then on, when people talk about the moon, they will only think of a desolate ball, not Jade Rabbit, Guanghan Palace and WU GANG.
Looking at the moon from a distance makes people have a beautiful daydream; Look at the moon carefully, and all people get are a few cold stones. This is the wonderful function of distance.
So how can we quit and experience the neglected beauty in life?
It is impossible for people to say that they suddenly immigrated to the moon collectively and looked after their homes on the moon. Then feel different beauty. The distance here is the distance of the soul. In a materialistic society, people's hearts are always wrapped in fame and fortune, so that they can't appreciate the beauty around them. So keep a distance from utilitarianism.
When we stop studying for exam scores, we will find that the knowledge in books is so interesting; When we slow down the pace of going to work and school, you will find how vibrant the green trees on the street are. Life is full of poetry. What people lack is a proper distance.
When our hearts are liberated and we keep a distance from foreign objects, we will find that the sky is the sky that gives me the desire to soar; The earth is the earth bearing all things; The ocean is the one that gave birth to the first life.
Let's take a step back and keep a proper distance, and the beauty around us will appear one after another.
Here, I want to say to our dear parents, please let go of your hands and your arms. You may find that the canary released from the cage has gradually become a tall Dapeng, bravely moving towards your desired goal. Is this the legendary "zero-wave micro-step" I said to him, "How dare you make Hu Ziwei cry? I want to fight it today.
I'm afraid of math, even hate math, because math is something I can't figure out what it is. So I hate math very much, not in general, but I hate it so much that I don't like it, but I am full of anger. That's why I hate math.
Having said that, my mood is full of anger and trouble. I want to play math to release my anger. Ah, if people all over the world are angry with mathematics, then there will be fewer people suffering 10 times and more people who like literature 100 times. This can be said to be an idea, but it does not exist in reality. If it does exist, then I believe I am dreaming.
I hate math very much. I want to sleep when I see math problems, and I want to faint when I hear math. Anyway, I gave up math and never wanted to be bullied by math. I stood up and attacked math.
If I can, I will wave my hand to make math easier. Only after the college entrance examination 1+ 1!
Sister Lin, with her "clean and white" life, has won the praise of many literati. Even if she died, she died so poetically. She is like a hibiscus out of water, surpassing the shyness of the cool breeze. Although she has many shortcomings, she is so perfect in my mind.
She is not only beautiful, but also very literary. Baochai can't compare with her in portrait, and she can also compare with Baochai in poetry and songs. Some people think that she loves to cry too much, but they don't know that she is crying for love. Little did she know that she was a girl who fell in love. Some people say that what she throws is sharp and hurtful. But she is defending her love. What's wrong with loving and hating?
But her ending was so tragic. She didn't understand why Baoyu didn't come to marry her until he died. I don't understand why Baoyu is so heartless. Every time I see the plot of her burning manuscript, every time I read her unfinished sentence: "Hello, Baoyu ...", my heart will break and tears will involuntarily flow downwards.
She lost her parents when she was a child and lived with her grandmother. A kind of worry hung over her. Coupled with her weak body, Baoyu often quarrels with her. She is such a lovely person that she is tortured to death. It was Baoyu who gave her the courage to live. Later, it was learned that Baoyu had married Baochai, and her last hope was dashed. He died on Baoyu's wedding day. It is conceivable that it was a scene that made people cry. What a beautiful scene?
Her last tears were also shed for Baoyu. But why is her ending so tragic? I don't understand.
Although Baochai is also very good, I still like Daiyu. She will always be the first in my heart!