In the choice of style, writing argumentative essays may be more general, while writing narrative essays may be more specific and touching. Of course, this is not absolute. You can choose freely according to your major, materials and understanding. Attention should be paid to the integration of narration and lyricism in expression techniques.
Fan Wen: A Bird's Prayer I am a poor bird. I once lived in a dense forest in the upper reaches of the Yellow River, where the scenery was beautiful and the air was fresh. The river there is clear and blue; There are abundant weeds and blooming flowers ... I live in a carefree home with my friends. All kinds of animals live in harmony. When the sun is shining and the spring breeze is warm, we often get together to hold a grand party. We are free and happy! Our home is beautiful: Aunt Chun brings us bursts of spring breeze with cheerful dance; Xia Bobo brought us a pool of clear water and clear springs against the background of blue sky and white clouds; Uncle Qiu greeted the bleak cool breeze and presented us with a string of golden fruits; Grandpa Dong put on his white winter clothes and reported our hopes for the coming year.
We are proud and gratified to have a comfortable and warm home! Time is like running water, gone forever. With the continuous expansion of human territory, our lovely home is being destroyed by human beings. When I flew back to my hometown again, I was very surprised at the scene before me: spring came, and the little grass sister got out of the soil and was no longer so green; The wild flowers opened her smiling face, but her smile was covered with a trace of melancholy; Brother Dahe took off his thick ice coat, but his body became thinner and thinner. Grandpa Dashu's condition is getting worse and worse, and the business of several new buds who just debuted is so lacking.
The long summer is really hard. The sun is shining in the forest, and the singing of the animal singer cicada is so weak that it makes people upset. Autumn has come, and the fruits on the trees are sparse, not as red or as big as before, so indifferent.
Winter has just arrived, and the animals in the forest are going to hibernate. Ah, we lost our beautiful and charming home.
Pieces of trees were cut down and the grass was yellow; Wild flowers hang their heads; The river is about to stop flowing. Tall buildings have risen from the ground, and the chimneys are constantly emitting smoke.
The environment is destroyed, the blue sky is no longer blue, and the river is no longer clear. Our old home has become a lifeless "dead zone".
There are no more animal laughter in the forest; No more warm sunshine; No more gurgling springs; No more "lullabies" ... Dear friends-human beings, please help us! We long for blue sky and clear water, and we pray for a peaceful home. With children's psychology and unique vision, the author expressed his understanding of environmental protection with fairy tales from the standpoint of birds.
The conception is novel and strange, the language is beautiful and vivid, the feelings are sincere and moving, and more importantly, the empty reasoning is avoided, making the article pleasing to the eye; At the end of the article, the bird called on human beings to "save us!" We are eager for blue sky and clear water, and we pray for a safe home. ".
2. A 700-word composition on the laws of nature: the revelation of nature
Art comes from nature, technology comes from nature, and everything in our lives comes from nature. Let's see what comes from nature.
People invented radar through bats and airplanes through bird flight. The flight behavior of people through dragonflies is very simple, only two pairs of wings keep flapping. Scientists have successfully developed helicopters based on this structural foundation. When an airplane flies at high speed, it often causes violent vibration, and sometimes even breaks its wings, causing the airplane to crash. Dragonflies rely on the aggravated wing moles to fly safely at high speed, so people follow the dragonfly's example and add weights to the two wings of the plane to solve the thorny problem of vibration caused by high-speed flight.
We learned the story of a small village, which told us that we should take good care of trees, protect the surrounding environment and maintain ecological balance. If we don't take care of nature, we will be punished by nature. We also learned the way of nature and told us not to go against the laws of nature. We must first understand and understand the laws of nature, otherwise we will do bad things with good intentions. Violating the laws of nature will inevitably be punished by them. This kind of punishment may take decades or hundreds of years to appear. In the end, it can only be human beings themselves. It is better to be kind to the natural environment and have more reverence for nature, so as to achieve harmony and balance. Being kind to nature means being kind to yourself. In order to protect nature, I put forward the following suggestions, establish the moral concept of interdependence between man and nature, and let people realize the importance of nature. Publicity once a year, action once. Every year, the school organizes an action with the theme of protecting nature to make students realize that they should protect vegetation and plant trees.
I also benefited a lot from this report on learning achievements held in my class. The students introduced the information they collected, many of which I didn't know, such as: ostrich eggs can be kept fresh, and velcro was invented by Xanthium sibiricum ... This time, I also realized how scientists carefully observed how long it took them to do experiments and research, and how long it took them to succeed, which brought convenience to people. This is really not easy for scientists! I will also carefully observe every part of nature, and when I grow up, I will invent useful things to bring convenience and speed to people.
Nature has infinite charm. As long as we are willing to observe and be good at discovering in life, we will certainly get a lot of enlightenment.
I discovered the mystery of Populus euphratica landing. Spring has come, and the sun shines warmly on the earth.
Willow branches sprout, apricot trees bloom, and grass sticks out from the ground. The stream is flowing happily, and the ducklings are playing happily in the water.
In my hometown, "Populus euphratica" is the one that can best show the information of spring. You see, other trees have not changed much, but the "Populus euphratica" on the tall and straight poplar has climbed out of its head and become thick and long day by day.
The fluffy and soft "Populus euphratica" is swaying and fluttering in the spring breeze, as if to say to people: "Spring is coming, and the weather is getting warmer." I often hear the old farmer say, "Poplar beard will never fall to the ground."
Is that really the case? I am dubious and determined to find out. After a spring rain, I carefully observed that "Populus euphratica" splashed on the ground in the fresh and humid air after the rain.
Why is this? Is it a coincidence, or is there some scientific truth? There are two reasons why "Populus euphratica Hu does not fall to the ground": the first "Populus euphratica Hu" is the seed of poplar, but its seed is light and small, hidden in the fluffy "Hu". Because the seeds are small and light, unlike other plants that have a certain weight when they mature, they can naturally fall to the ground.
Second, after the spring rain, the fluffy Hu absorbed enough water and gained a lot of weight. Plus, after the rain, "Baiyanghu" spilled all over the floor. This interesting natural phenomenon appears every year, so it is no wonder that the experienced old farmer said, "Poplar Hu does not fall on dry land."
When Populus euphratica landed, it was the season when we were busy planting spring garlic here. Friends, how interesting nature is! Let's go to nature to observe carefully and study deeply.
4. An article named "Laws of Nature" won the composition of "Laws of Nature"
Nature has laws, but if we don't obey these laws, we will be punished by nature. But if we pay attention, these natural laws will have great enlightenment to our lives.
If you don't obey the laws of nature, it will lead to disaster. For example, once upon a time, there was a beautiful small village surrounded by green trees and the river was clear. People live in a humble log cabin and live in peace and contentment. Suddenly one day, a man felt that his house was not beautiful, so he cut down several trees to build a new house. Another man saw it and wanted to compete with him, so he also cut down trees to build a new house. In this way, one is built one day, and one is built one day. The trees are gone, the water is mixed, and the houses are washed away. Therefore, everyone should protect trees and forests.
Tell another story about a person who values and cares about nature and gets help from it? The appearance of gas masks. During the First World War, the Germans fought against the British and French allied forces, and they never won or lost for more than half a year. As a result, the Germans used chemicals and attacked each other through the wind, killing a large number of wild animals. Only the wild boar is still alive and well. Why? After careful observation and research, it turns out that pigs love to arch the ground with their mouths, and the arched soil has a filtering effect. Scientists therefore invented the gas mask, so the mouth of the gas mask is like a pig's mouth.
There are many revelations from nature, such as: it will rain when ants move, and the sky will change when dragonflies fly low. I won't elaborate on this. I believe that everyone has mastered many such natural laws. Let's stay away from disasters and discover more natural laws for the benefit of mankind.
There are many secrets in nature. In this article, a little turtle has a "scout". When it is in danger, it will come back to keep other little turtles from going out, so that they can enter the sea safely. However, it could have been like this, and things are far from simple.
In April and May, the author, his companion and a tour guide went to the Galapagos Islands to observe a baby turtle leaving its nest and entering the sea. They saw that a little turtle was about to be taken away. Out of sympathy, they took it to the seaside. Then hundreds of young turtles left their nests and were pecked to death by carnivores, thus realizing that everything in nature has its own way to survive and avoid disasters.
In my opinion, people are also animals, and they should follow the laws of nature. Nature has already arranged the food chain, which could have allowed any species to survive. It is fair, and there are many rules.
There are some goldfish in my family, all of which are very small. In order to make them grow up quickly, I just want to give them more. Maybe they can grow fatter and fatter like people. So I poured half a bag of fish food into it. They ate these rice-sized fish food one by one, and soon they almost ate it up, but it seems that they still want some. To meet their requirements, I poured some fish food. Eating is a bit slow. I swam for a while, ate one, and then went away to do something else. When I went to see them again, their bellies swelled and they floated sideways on the water. They died. My mother told me that goldfish can't feed too much food at a time, and it won't grow up if it is fed too much. No secret can make him grow up quickly. Yes, who can grow up at once?
Nature has many arrangements and secrets, and all creatures in nature should abide by them, including us, otherwise everything will go to the opposite side.
6. Natural Law Composition Topic: Respect for Natural Development
It can be said that the story of "encouraging seedling growth" happened 2000 years ago, and we can still see their far-reaching significance today. It can be seen how difficult it is to protect the ecological environment and respect the laws of nature, and how long it will take us to work together. Therefore, every one of us in China should respect nature, respect the law and establish the principle of acting according to law. Of course, the premise of respect is to understand and master the laws of nature and learn more about nature. In this way, there is a scientific basis for respecting the law and doing things according to law. Otherwise, we will always act as the above farmers and kind tourists, and things are often self-defeating.
7. Composition against the laws of nature When the mother said that the fish appeared in pairs, the child did not believe her mother's statement and went to find it again. Sure enough, the child found a similar fish. What makes mom know that there must be another fish? What made the child really find another fish? This is the law of nature. Those fish will appear in pairs, which is a natural law.
The laws of nature can help children find another fish and help us find the right way to develop.
Following the laws of nature will lead science in the right direction. When Mendeleev arranged the earliest periodic table of elements with playing cards, few scientists present agreed. However, when the elements predicted by Mendeleev were discovered one by one and were similar in nature, Mendeleev laughed at people's surprise: "This is only the law of nature". Yes, Mendeleev only discovered simple natural laws, but it was by following these natural laws that people discovered one unknown element after another.
If we make rational use of the laws of nature, it will certainly promote the development of scientific society. On the contrary, if you don't obey the laws of nature, it will inevitably lead to the bitter fruit of failure. Ambitious China people made the Great Leap Forward after the reunification of China, and put forward the unrealistic goal of catching up with Britain and the United States within ten years. "How bold people are and how productive the land is" was all the rage at that time, but such a serious violation of the laws of nature will inevitably lead to failure. The failures of our predecessors inspire us all the time, and we should develop on the basis of observing the laws of nature in order to succeed.
Even if there are huge benefits in front of us, we should still stay awake and obey the laws of nature. During the industrialization period, greedy people kept producing, completely ignoring the serious harm caused by industrial tail gas to the earth's ecological environment. As a result, sea level rise, global warming and acid rain hazards followed. People began to re-examine their "heinous crimes", began to reproduce according to law, reduced the harm to nature, followed the laws of nature, and made human life better.
It is true that you can send scientists like Copernicus to the fire pit, but Heliocentrism's laws of nature will not change. Similarly, no matter how you deny it, the laws of nature exist objectively and will not be transferred by human will.
So, follow the laws of nature, so that you can get better development.
No matter how you deny the laws of nature, if you don't follow the laws of nature, you set an unrealistic goal of catching up with Britain and the United States within ten years and restart production according to the laws. When the mother said that the fish appeared in pairs, the child didn't believe her mother's statement and went to look for it again. The failure of predecessors inspires us all the time, and the scientists present rarely agree that we should develop on the basis of observing the laws of nature. But when the elements predicted by Mendeleev were discovered one by one and their properties were similar.
So, follow the laws of nature, so that you can get better development.
Scientists like Copernicus can indeed be sent to the fire pit.
Rational use of natural laws can make human life better, but Heliocentrism's natural laws will not change. Similarly, the child found a similar fish. What makes mom know that there must be another fish? What made the child really find another fish? This is the law of nature. In this way, science will be led in the right direction. At that time, Mendeleev arranged the earliest periodic table of elements with playing cards. China's prosperous people achieved the Great Leap Forward after reunification, but Mendeleev laughed off people's surprise. Yes, Mendeleev only discovered simple natural laws, but it was by following these natural laws that "how bold people are and how productive the land is" was all the rage at that time, but such a serious violation of natural laws will inevitably lead to failure: "This is just a natural law." Those fish will appear in pairs, which is a natural law.
The laws of nature can let children find other fish, and also let us find the right way of development. People have discovered one unknown element after another.
Only by following the laws of nature can we succeed.
Even if there are huge benefits in front of us, we should still stay awake and abide by the laws of nature, which will certainly promote the development of science and society. On the contrary, the laws of nature exist objectively and will inevitably lead to the bitter fruit of failure. Global warming and acid rain will harm these disasters one after another, and the sea level will rise. During the industrialization period, greedy people kept producing, completely ignoring the serious harm caused by industrial tail gas to the earth's ecological environment. People began to re-examine their "heinous crimes", reduce the harm to nature, and follow the laws of nature, which will not be transferred by human will.
9. The laws of nature, the theme of the composition, the discovery of nature in the fourth grade of primary school and the fourth grade of primary school.
Nature is a mysterious magician, showing people its magic and creating a small question mark for us to seek the answer.
Grandma's family planted many fruit trees, but when I came home last holiday, I found a strange phenomenon: why are the fruits not sweet when it rains too much, and why do some fruits fall off when they are ripe? These questions aroused my curiosity. Through consulting the information, I learned that we feel very sweet when eating melons and fruits, because melons and fruits contain a lot of sugar. These sugars are stored in fruits through photosynthesis. With sufficient light, the stored sugar will increase accordingly. If it is always rainy, the time for the sun to shine on plants will be reduced, the sugar stored in the fruit will be reduced, and the fruit will naturally not be sweet. If the fruit hanging on the branch is ripe, it will fall off, because the fruit and the branch are connected by some cellulose in the fruit handle. When the fruit is ripe, the cells on the fruit stalk begin to age and lack nutrition, forming a so-called "delamination" at the base of the fruit stalk. The abscission layer is like a knife, which divides the fruit handle into two parts, so that the fruit will fall off when it is slightly blown by the wind.
Although this is only a small discovery, it makes me understand a truth-as long as I pay attention to observing nature, I will find something.
Discovery of natural model essays in the second grade of primary school
There are many wonderful secrets in nature waiting for us to discover and explore. For example, why do dragonflies order water from time to time? What tools do crickets use to build nests?
Once, I played with some friends by the river. Suddenly, a beautiful dragonfly passed before our eyes and came to the mirror-level water surface, and then stroked it on the water surface from time to time, rippling around the waterline. My curiosity drove me to find the answer. I waited quietly for the opportunity, staring at the dragonfly's movements-clicking there again and again. I told my parents about this strange phenomenon. They said: "Dragonflies may drink water, because they love hygiene and bathing as much as we do, so they often drink water." I'm skeptical. So, I asked my good assistant-computer for help. I looked at one website after another.
Ah, many things happen. I found the answer I wanted in Baidu: In fact, dragonflies that drink water are all females. Some people say that drinking water is for washing, laying eggs, courtship or water beauty, so I need some water. Why on earth do dragonflies need water? In fact, although dragonflies are insects that live on land and fly in the air all day, their larvae live in water. In order to breed, they must choose to lay their eggs where there is water, and fertilized eggs can only hatch in water. So the dragonfly dipped its tail in water to discharge the fertilized egg into the water, and the egg attached to the aquatic plants in the water. Soon, they hatch larvae. After living in water for a period of time, larvae are called hydra, which climb out of the water along the branches of aquatic plants.
Although this discovery is small, it is very meaningful to me.
I know a lot about nature. I will open my eyes and discover more secrets in the future!
Discover nature in the fourth grade of primary school
Last summer, when I was playing in the yard, I found flowers of the same different color. After searching the information, I finally found the reason.
If the color of flowers changes between red, blue and purple, this is the role of anthocyanins. Anthocyanin is an organic pigment. As long as the temperature and pH change slightly, it will change color immediately.
But flowers are not just red, blue and purple. What about other colors?
I checked "100,000 Why" again, only to know that the orange-red change of yellow flowers is due to carotene. Carotene is also an organic element, and many flowers contain carotene.
I thought, do you have any black flowers? After searching online, I found that although there are many colors of flowers in the world, there are very few black flowers.
Because black can absorb all light waves, the black petals heat up quickly in the sun, and the flower tissues are easy to be burned, which is not conducive to the self-protection of flowers. Moreover, black flowers are not easy to cultivate, and few varieties are naturally preserved. It is also very difficult to create black varieties artificially, and even the chances of obtaining black flowers through hybridization are slim.
I can know so much from a little flower. I must observe things around me more, so that I can know more about the laws and truths of nature.
10. The natural law of topic composition is irresistible.
Sun, moon and stars, storms, rain and snow, and alternation of day and night are all natural phenomena. People can only explore, discover and use nature on the basis of respecting it and following its laws. Draw something useful for my use; Discard waste and clean the environment; Create a living space suitable for human beings: rice, oil, salt, sauce, vinegar and sugar necessary for material life; The joys and sorrows necessary for spiritual life.
In a well-off society, only under the premise that biology is limited to the survival of the fittest can human beings achieve faster development and rely on science and technology to vigorously develop productive forces; Rely on scientific and technological strength to overcome unfavorable factors and improve the harsh environment.
Recently released: In today's world, in addition to mathematics, the brilliance and warmth of the new Nobel Prize nourishes the earth, and the power of knowledge economy will benefit mankind. On the shoulders of "natural law giants", let the gods who benefit mankind-Nobel Prize winners spring up like mushrooms after rain!