In the weekday study, work and life, we are the most unfamiliar is the composition, right, the composition must be done to focus on the theme, around the same theme for in-depth elaboration, avoid East and West, the theme is lax or even no theme. So how is the general essay written? The following is my carefully organized fourth-grade students essay 6, for your reference and reference, I hope to help friends in need.
Fourth grade students essay Part 1Humans have lived in this world for more than six million years. In the long six million years, human beings have made great progress: the cognitive revolution has brought people out of ignorance and into the era of civilization of rapid development; the agricultural revolution has enabled people to get rid of famine and start a self-sufficient life; the industrial revolution has brought an end to the backward manpower era and begun the era of mechanical power, which is symbolic of speed and science and technology ... ...In the evolution of mankind, plagues, famines, wars and other disasters that once plagued mankind for a long time have been solved one by one. But there is one kind of natural disaster that mankind is helpless against even now. It is the earthquake.
Earthquake is the first of the group of disasters. Internationally, people divide earthquakes into 1 to 10 on the Richter scale. Earthquakes above 5 on the Richter scale are destructive. Destructive earthquakes can cause serious damage to buildings in an area and pose a great threat to people's lives and property. Although people now have the ability to predict earthquakes initially, there are various reasons such as underground noises and the depth of the source of the earthquake that make it impossible for people to make accurate forecasts. According to incomplete statistics, 7,000 people are killed in earthquakes every year, and the average direct and indirect losses caused by each earthquake amount to about 6 billion dollars. The damage caused by earthquakes with a magnitude of over 8 on the Richter scale is as high as about 10 billion dollars. In the face of such high property losses and hazards, is there any way we can minimize the losses? The answer is yes. There are a variety of ways to prevent earthquakes. I will share a few of them with you below.
One, the precursor of the earthquake. Before an earthquake, many animals will have different degrees of throbbing phenomenon. Some domesticated animals have the strongest performance. Pigs, sheep, cows and other large animals will appear to scurry, arching, screaming. And the water in rivers and wells will also appear abnormal. For example, turbidity, flavor, water quality and other obvious changes. At the same time often accompanied by tumbling, floating oil flowers phenomenon. As soon as an abnormality is detected, you should be alert and prepared for earthquakes. Conditions should be reported to the relevant departments.
Second, the way to evacuate during the earthquake. Generally speaking, when an earthquake wave reaches the ground, it is divided into "horizontal" and "vertical" waves. Longitudinal waves reach the ground before transverse waves. When the vertical wave arrives, the ground will be slightly bumpy. This is the "golden hour" for escape. Once the transverse wave hits, the ground will shake violently from side to side and people will feel dizzy. There are about 25 seconds between the arrival of the vertical wave and the collapse of the building. So unless you're sure you can evacuate quickly, it's best not to risk it, but to take shelter nearby.
Third, the precautions of escape. Escape must be chosen in the open, away from the building. So if the physical education class is a sudden earthquake, refuge in the playground is the best choice. When you reach a safe place to crouch down, hands on the head, to prevent stones, bricks and so on from falling from a height, resulting in life-threatening.
Fourth, the precautions of the nearby refuge . We generally learned the knowledge of refuge is to hide under the table, hands grasp the legs of the table. But in fact, this is completely wrong. If the ceiling collapses, the table will be crushed. Therefore, the casualty rate of this method is more than 95%! Therefore, the correct approach is: hide next to the seat and try to keep your body in the middle of the two objects. This way, due to the obstruction of the object, the object from above will be difficult to hit the head exactly. So the casualty rate of this method is less than 3%.
Fifth, the attention of the building. China is an earthquake-prone country. So the ground piles of the building must be very strong and play a role in preventing the building from collapsing. In addition, the nuclear power plant and other dangerous buildings must be far away from the earthquake-prone areas. For example, the Fukushima Daiichi nuclear power plant leakage accident in 20xx is because Fukushima is located in the coast of Japan, earthquake and tsunami prone. on March 11th, the sea around Fukushima occurred 9.0 on the Richter scale. The strong shaking caused the nuclear reactor at the Daiichi plant to leak. Radiation and radioactive gases spread into the air, leading to the emergency evacuation of hundreds of thousands of people. To date, the radiation has not only not dissipated, but has also spread throughout Japan! This shows that it is also very important to build the right building in the right place.
In fact, there are many more ways about earthquake prevention and mitigation. Although earthquakes are irreversible natural disasters, as long as we learn a little more about earthquake prevention and accumulate more experience in self-help, so that we will not panic when the earthquake comes, we can minimize the damage caused by the earthquake.
Fourth-grade students essay Part 2Today is a Sunday, my companion and I agreed to go outside to play.
In the morning, we walked on the road, looking around, the trees on both sides of the lush, flowers, colorful, fragrant and charming. Along with the beauty of the road, unknowingly we came to the brigade square. There is a sea of people, some in the square dance, some are touching Tai Chi, some are playing chess, really lively ah! A few of us are not willing to lag behind, quickly join in, the girls jump rope, we boys running, after these warm-up activities we played the "wooden man" game: we listen to the command, the action is particularly funny, even the grandparents nearby are amused by us.
In the pleasant game, the morning slipped away. The hot sun was scorching the earth and seemed to be reminding us that it was time to go home for dinner. After arriving home, I devour eat up, mom see me eat like can not help but break into laughter, a strong reminder to me, eat slowly, for fear that I was choked. After eating, I am still not addicted to, from the refrigerator to take an ice cream, that taste, really cool ah! When I finished eating, my father brought back a big watermelon, but I was so hungry that I couldn't eat anything in my stomach as big as a watermelon!
After a nap, a few of us gathered at the basketball court in the village and played a puzzle. The first few times I put together a very slow, but I was not discouraged, calmly analyze, and finally figured out the law, and then the performance is getting better and better, and finally came out on top! When the game came to an end, the naughty Zhang Liheng suddenly threw out the "black boss", the sudden sound of everyone jumped, everyone's interest was immediately transferred to him, the crackling sound of firecrackers, the flash of light illuminated the small basketball court.
As night fell, we were all tired of playing, but I felt very happy, and wished I could have such happy days forever!
Fourth-grade student essay Part 3Today is the Mid-Autumn Festival, I'm so happy, I can not go to school, and I can not write homework. Oye ......
Dad read a passage from his cell phone: "When I was a kid on Mid-Autumn Festival, I couldn't listen to Chang'e's story at all, and my heart was always thinking of eating mooncakes. Now over the Mid-Autumn Festival, mooncakes simply can not eat, the heart always think of Chang'e ...... "I think of moon cakes, Chang'e which have to play well, which have to watch TV and play computer good.
We went to the supermarket early in the morning to buy moon cakes and other gifts for the holidays went to Grandpa's house.
As soon as I arrived at my grandfather's house, I went to the field with my brothers to burn the fire, and I also picked an orange. My brothers began to burn the fire, I climbed the tree to watch them burn, the hand of the tangerine fell into the fire, I had to wait for the fire to go out and then eat. I waited and waited and waited, so long ah, I was in the tree dreaming a dream, the tangerine finally roasted, I picked up and tasted: "wow, the flavor is great" so I said loudly: "Let's play fruit big barbecue." A few of us picked a few oranges and started a big fire to roast them. We also prepared a "fire extinguisher" - each holding a urine. Oranges roasted, one, two, three, we pulled out their own weapons, ah, a lot of water, the fire was doused by us at once. It's really fun, better than Chang'e's story.
Eat enough baked oranges, we ran in the field, sweat wet clothes, do not feel tired. Running I ran into the mud, fell a big butt pier, clothes on all the rotten mud, stink to death. But I was so happy, I was laughing all the time. You see, my Mid-Autumn Festival is not more fun than eating mooncakes.
Time flies, as if I just played a second to go back to Loudi.
It was dark, but I didn't see the moon. It was late at night, and I dreamed of the moon, and Sister Chang'e, who smiled and said to me, "Come up here, come and play with me."
Fourth-grade student essay Part 4The Hulan River in my hometown is a beautiful river!
The Hulan River is mesmerizing in its beauty and colorfulness. When the wind is calm, the Hulan River looks like a mirror. When the breeze is blowing, the blue waves are rippling, and under the golden sunlight, the waves are sparkling, calling people to be happy. When the river gale, hundreds of miles of water white waves, surging, wind and water sound into a piece, like that thousands of horses charging ......
Fish sometimes to the surface of the water to spit bubbles to run, as if looking at the big world; sometimes to the inside of the water back and forth to play, as if mischievous children in your chase; sometimes around the A few different stones to go back and forth for a few rounds.
The banks of the river are lined with trees, the autumn wind blew over a few leaves down, like a few beautiful yellow butterflies fluttering up and down, it is really a thousand colors!
There are also a few small birds in the trees chirping as if to say, "This Hulan River is really beautiful!" They go to the water every day to drink!
Some of the birds hover back and forth above the river; sometimes they swoop right down into the water; sometimes they skim the surface of the river as if it were concentrating on catching fish.
Another man swam in the river, and when he reached the shore, all said aloud, "This water is so cool! It's so refreshing!"
I looked at the Hulan River and couldn't help but think of my childhood memories. In a sunny weather, I, Li Siqi and mother to go to the river to play I and Li Siqi in the river wash, I and it also catch fish, touch shrimp. And also saw fishing people, crooked how happy!
I love my hometown Hulan River!
I love reading since I was a child.
In the brilliant sunshine, spread out a book on your lap, smell the faint fragrance of ink emanating from the thin paper, drink water and listen to the wonderful sound of the wind blowing open the pages. My parents, in order to inculcate in me a love of reading, little . The walls of the home to install a six-layer bookshelf, I often stand in front of the bookshelf, tilting my head to look at those colorful books, I know that the love of the book, from then on, it is y imprinted in my heart.
Whether it is the heavy Siku Quanshu, touching novels of the Golden Prize, Zhu Ziqing's collection of essays, or pithy little stories of axiomatic, it allows me to understand the life of the most true and pure, or so that I understand the world's vast, infinite knowledge, but the deepest impact on me is still a book called "Harvard Family Trainings".
My classroom discipline has always been bad, love to talk nonsense, no matter how hard I try, there is not much change, my mother is a little disheartened, in my vacation when I gave me a book, the name of the Harvard family motto.
This is an unremarkable book, white cover, elegant and ordinary. Every story told is rich in educational function and profound meaning of life. The most impressive is one, "There are three people, one is a strong believer in witches and addicted to alcohol, one was in a drug house when he was a teenager and had a lot of lovers, and one did not do any bad things during his life and only drank a little bit of alcohol, which one would you like to be?" I chose the third person without reading it because I knew the first two were not going to end well. I was wrong, the first two men were Lincoln, the 2 US presidents, and Roosevelt, the US commander-in-chief in WWII, while the third was Hitler who indiscriminately killed thousands of innocent lives. It's not just a story, his story is also a life fold, and the truth in it can turn a person from being a troublemaker everywhere into a person who lives a rich life. Then if I can change my shortcomings of being talkative and confused, won't I also become a person whom my teacher likes to have a good life? Look and think I smiled, see me self-discipline, by then mom and dad will certainly also smile, I think that book, also followed the smile.
In fact, I really should be grateful for reading, the book not only gave me a lot of tangible knowledge, but also injected me with a lot of intangible power ......
Fourth-grade students Essay Part 6Some people look at the name will want to "tigers" will also be What's going on with the third-grade student? I do not sell the secret, three good students is our class of male students to Shi Xiaoyu nicknamed, because she is in our class but no one knows no one knows the super powerful characters. The nickname was born
I'll start to introduce her. She is in our class in addition to studying well in addition to the blessings of the same, because one Friday she asked us to go together to a place, she asked five people, we followed her in the afternoon to go. I didn't realize it was a small cave we played and frolicked in it. Very high hearted.
Secondly she is very capable and bold. Once our class held a handbill competition, our group of three people to participate, while her group is not one. She was the only one who organized the handbill. And her handbill won first place. I really admire her.
Thirdly, her English is also very good. One English competition, she went elsewhere than the English third. For my class to fight a lot of light. But he is also very powerful, because she is our class tigress.
This is our class number three student "tigress"