Have you ever seen a group of tiny ants crawling on the wall, carrying food as small as sand all the time, and walking in droves? That tiny figure is very fragile, so long as it is pressed by people, its life may end like this. Although the ant is small, it is very United. When an ant finds food, it can't carry it by itself because it is too big, so it immediately returns to its nest and informs its partners that everyone can unite together. If we can cooperate, we can stand firm in our life.
Cactus lives in desert area, where it is extremely hot, and there are many vicious beasts, and its situation is very dangerous. However, cactus has lived there for a long time, but it has not become extinct. This is because it grows sharp thorns to adapt to the dangerous environment, which makes the animals helpless. This seems to tell us that we must overcome difficulties, and we must rely on our own strong perseverance to solve the external tough environment. As the saying goes, "Nothing is difficult in the world, only if you put your mind to it."
2. What composition did I find about animals? 400 words Butterfly and Bionics.
Colorful butterflies, such as the butterfly with double moon pattern and monarch butterfly with brown vein, especially the butterfly with fluorescent wings, whose hind wings are golden, green and blue in the sun. Scientists have brought great benefits to military defense by studying the color of butterflies. During World War II, the Germans surrounded Leningrad in an attempt to destroy its military targets and other defense facilities with bombers. According to the lack of understanding of camouflage at that time, the Soviet entomologist Schwarzenegger put forward the principle that the color of butterflies is not easy to be found in flowers, and covered military facilities with butterfly-like camouflage. Therefore, despite all the efforts of the Germans, the military base in Leningrad remained undisturbed, laying a solid foundation for winning the final victory. According to the same principle, people later produced camouflage uniforms, which greatly reduced the casualties in the battle.
The constant change of satellite position in space can cause sudden temperature change, sometimes the temperature difference can be as high as two or three hundred degrees, which seriously affects the normal work of many instruments. Inspired by the fact that the scales on the butterfly will automatically change their angles with the direction of sunlight to adjust their body temperature, scientists made the temperature control system of the satellite into a louver style with great differences in radiation and heat dissipation capacity between the front and back of the blade. A metal wire sensitive to temperature was installed at the rotation position of each window, and the opening and closing of the window could be adjusted with the temperature change, thus keeping the internal temperature of the satellite constant and solving a major problem in the aerospace industry.
3. Write a composition about dogs (Title: My Discovery in 400 words) My little dog.
There is a little yellow dog in my house. It is covered with golden hair and looks as bright as oil. Round, dark and shiny eyes, like beads, turn round and round all day; It has a long mouth and a pair of very clever ears. If there is any noise nearby, it will put its ears up. The yellow paws are like four plum blossoms, and the pouting tail is always swaying leisurely, which looks very pleasing. I named it Xiao Huang.
"Xiao Huang" likes to lie on the ground in the sun during the day, but at night, he guards like a doorkeeper and barks at every movement. It is never picky about food, and even the leftovers are eaten with relish. It is also very smart and good at thinking. Once, I filled the bucket with clear water, and "Xiao Huang" came running with his tail wagging and craned his neck to drink water. But the bucket was too high to drink, and he didn't lose heart. He circled around the bucket several times, then proudly held his head high, his front paws were on the side of the bucket, and he pressed hard. The bucket fell down and the water flowed all over the floor, and he drank enough, hehe!
"Xiao Huang" will also call in different lengths. When you are happy, you are very enthusiastic, and when you are unhappy, you are indifferent. When others bully me, it will see me and help me. It barked, and everyone else was afraid to bully me again.
"Xiao Huang" still loves to play in the water. Just after it rained, I ran out. When I saw a small puddle, I ran to catch water with my small paws. After catching it several times, I felt that I was not satisfied, so I plopped and jumped. This is a bad thing. I was wet all over, hehe! Trembling with cold.
This is my "Xiao Huang", really naive and lively, naughty and lovely!
4. Write a composition about my little discovery in 400 words. I found a little secret, "Observe, observe, and observe again". Pavlov said it well. Only by observing can we find wisdom in life, gain enlightenment, understand the infinite mystery of nature and discover the unknown world. The following is a little secret I found in my life. One night, I went to the kitchen to pour water. "Oh, my god" I shouted. I saw little black ants everywhere on the ground, on the table and beside the vegetable washing pool, and almost the whole kitchen became an ant world. I saw some of the ants carrying scattered rice grains and peels, some riding alone and looking around, and some swarming like pieces of black armor. I was shocked: how can there be so many ants in my house, I'm afraid there are more than 1,000? In order to prevent the ants from eating all the food and polluting the kitchen, I started. I first called in the air force-the hair dryer. When I plugged in the power supply, I heard a buzz. Many ants flew far away at once, just like getting on a plane, but they just flew away but didn't die. They also raised their tentacles to demonstrate to me. I was so angry that my feet suddenly met something-the kitchen "oil gourd" cleaner. Is it useless to use it to deal with ants? But it is a kitchen cleaner! I sprayed it willy-nilly. It didn't matter if I sprayed it. The ant suddenly closed its eyes and kicked its legs-it was dead. I was so happy. It was really "it didn't take much effort to get it". I was going to do a big job, but it suddenly occurred to me that the teacher said that insects are alive and can't hurt them! But they are pests. If there were no such creatures on the earth, would our life be happy? Aren't there many rare animals like giant pandas and golden monkeys in the past? Didn't you kill one and lose one? Can you attract them away in other ways? They come for food! At this time, I observed the kitchen and found the "source" of ants-the sewer! I had a brainwave: ants don't like sweets! I put a few pieces of sugar according to their route, which lured the ants away. It is true that "paying attention everywhere is learning" in life. I found that the "Gourd" brand cleaner originally used to clean oil stains can kill ants as easily as pesticides. "Observation is the most important energy of wisdom" Friends, let's observe life together! Let's discover wisdom, get enlightenment, understand the infinite mystery of nature and discover the unknown world.
5. What animal have I discovered? I discovered the mystery of animals in the fourth grade.
I have a very cute kitten in my home.
This kitten is very cute, with gray hair, soft and comfortable to the touch. It has a round head, a pair of pointed ears and big eyes. In the daytime, a pair of blue eyes narrow into a line, but at night it becomes very big, very bright and very divine.
Why is this? I thought about it. Once, I was taking a nap. Before going to bed, I closed all the curtains, and the room became dark immediately. After waking up, I opened the curtains, and the strong sunlight came in. I narrowed my eyes. Suddenly, I thought of cats. Could it be that the light during the day was too bright, causing my eyes to narrow into a crack, while at night it was just the opposite?
I also found that my cat will grow a beard from birth. What's the use of it? Because listening to the teacher said: everything on animals is very useful, otherwise it will degenerate. "I was very surprised, so I went online to look up information. I understood that the cat's beard is so long on both sides because it is like a ruler, slightly longer than the cat's body. When entering the hole, the cat should first compare the hole with its beard. If the hole is smaller than its body, the cat will not enter the hole. If the hole is bigger than its beard, the cat will enter the hole.
When cats sleep, they always stick their ears under their forelimbs and close to the ground. I think it's strange. Is it comfortable to sleep in this position? What are the benefits of sleeping like this? So, I fell on the ground like a cat. At this moment, I heard a burst of footsteps, but I looked up, but I couldn't hear them. After a while, I heard footsteps, but I didn't know them clearly just now. I fell down again, much more clearly than before! Suddenly, I understood, originally, because the sound on the ground is much faster than that in the air, once a mouse walks, the cat will wake up immediately, which is why the cat has to sleep on the ground.
Cats like to eat fish and mice. Cats like to eat mice. It may be because mice move at night and cats move at night, so cats like to eat mice, but what about fish? Why do cats like to eat? I checked the information on the Internet. It turns out that cats often move at night, and they must have a lot of taurine in their bodies, which can improve their eyesight at night, and fish and mice are one of the animals with the most taurine, so mice and fish naturally become a good meal for cats. If cats are not supplemented by this substance for a long time, their eyesight will be reduced, and they can't see in the dark, let alone catch mice.
In nature, there are still many mysteries waiting for us to discover. As long as we pay attention to observation, we can find something.
6. My discovery composition is 350 words, and write about the animals you observe, such as ants. Today, I found a dying big caterpillar crawling slowly on the way from school, and I saw a small ant hovering around the big caterpillar, as if trying to get it back to its nest, but there was nothing I could do, because the big caterpillar was really too big for a small ant.
I stared at them intently to see how things would develop. Although this little ant is so small compared with the big caterpillar, it doesn't want to give up this hard-won delicacy easily. I saw that it pulled from the head of the big caterpillar for a while and pushed from the tail for a while. It really did its best, but the big caterpillar did not move. I think the little ant will go home helplessly after being exhausted, but something strange happened. I saw the two tentacles on the little ant's head swinging up and down constantly. I was wondering what it was going to do. Soon, swarms of ants came to the big green worm, some pushing and some pulling, and some lazy guys even climbed onto the big green worm to enjoy the delicious food. Finally, the huge caterpillar was successfully transported back to the nest by countless small ants.
Ah! Small ants have this spirit of perseverance, unity and mutual assistance, not to mention us? Let's remember Zweig's words-if all human work is worth doing, and it should be done well, we should concentrate on it.
Little ants are insignificant, so long as we step on them lightly, their lives will be gone. However, there is a valuable quality in ants that is worthy of our human learning-unity and cooperation.
I remember once, when I was walking in front of my house, I suddenly saw a biscuit on the ground. There was a little ant standing next to the biscuit. I thought, What is this little ant doing? So I squatted down curiously and carefully observed the little ant. I saw that he used his tentacles to top the cookies first, but the cookies didn't move at all. This move made me understand that it was going to lift this biscuit. I continued to observe, and it tried to push the biscuit forward with its front foot, but the biscuit just didn't move. Finally, it struggled to carry the biscuit on its back, but it was too much to bear once it was carried, and then it was put down again. Although the little ant didn't leave, it can be seen that it was disappointed. The little ant walked back and forth in front of the biscuit again, as if thinking about something, and then quietly left. I thought: This little ant must have given up, and I have nothing to see. Go home. Just as I got up to leave, I suddenly saw a large group of ants coming towards this biscuit, and it was the little ant who took the lead! Under the command of the little ants, the ants lined up in two rows on both sides of the biscuit, the big one was carried on the back, and the small one was topped with tentacles. Finally, the biscuit was lifted. I kept watching the biscuit and the ants and watched them disappear on the green grass.
It is impossible for a small ant to move this biscuit, but when many ants think new things and try their best to make them work in one place, they condense into a powerful force-the force of unity and cooperation. Therefore, we should learn to unite and cooperate with each other and help each other, instead of going our own way. This is the inspiration I got from the matter of ants moving food.
7. How to write my discovery composition in about 400 words? Today, the teacher left us an assignment to observe small animals. I didn't know what small animals to observe, so I asked my brother to observe small animals with me.
We went to grandma's grass to observe the ants. The ants were as black as black sesame seeds. It has a pair of thin and long tentacles on its round head. If they meet, they will touch me and I will touch you with their tentacles.
If an ant finds food, it will go back to the hole and tell each other with its tentacles, and they will move the food back to the hole together. Ants have six calves and walk very fast.
The ant's belly is round and big, and it seems to contain a lot of delicious food. My brother and I came to the hillside, and I saw black things moving from a distance. My brother and I went there together and saw that it was a group of ants moving.
Their team is orderly, like a small train. Suddenly, an ant leaves the team, as if wanting to be a captain or tired from walking, and wanting to have a rest. At this time, an extra-large ant came and touched it with its tentacles, as if to say, "Don't be lazy, get into the team quickly.
Or I'll fix you. "It quickly inserted into the team to move with them.
When they were moving, suddenly a big caterpillar jumped into their orderly team. These ants quickly surrounded the big caterpillar, and one ant bit the foot of the big caterpillar. Later, several ants rushed up and killed the big caterpillar. These ants unite with love and help each other. I want to learn from these ants.
8. The composition "My Discovery" is about 400 words. My discovery
There is a jar of marine fish in my family. Under the light, beautiful corals are floating in the water, just like a girl dancing. Fierce panther fish, cute zebra fish and naughty tomato fish … countless.
On this day, when I was ready to feed the fish, I found the whole body of zebra fish floating on the water. I thought: How can this zebra fish float on the water? I'd better observe for a few days first!
The next morning, I ran to the aquarium and saw zebrafish and tomato fish playing. After I saw it, I recorded today's events in my notebook. At night, I found zebrafish floating motionless on the water. What's going on here? Did it die at night and come back to life the next day? Alas, let me observe it for a few more days! So, I wrote down what I saw again. For the next few days, I wrote everything I saw in my notebook.
One day, I finally couldn't help it and asked my father, "How can this zebra fish float on the water every night?" Is it intentional to pretend to be dead to scare people? " After listening to this, my father smiled and said to me, "This is the habit of zebra fish. It floats on the water every day!" " After listening to this, I said, "So that's it. I thought zebrafish had the ability to bring back the dead! ！” Dad touched my little head and praised, "You are a good boy who observes carefully! If you want to learn more, you must observe and discover for yourself. " I said excitedly, "Dad, is this my discovery?" Looking at dad nodding his head, my heart is sweeter than eating honey.
9. My Discovery Composition 400 words My Discovery
When I was a teenager, I found the key to "solving the problem". Of course, my findings will not be as profound as adults say, nor will they be as naive as children. This is a simple discovery of personal experience.
In the third grade, the teacher gave us a thinking question to do every day. But at that time, I didn't have the knack of solving the problem, so I had to stare blankly at other students to hand in their books. Therefore, I have always wanted to solve the problem. Two days later, I watched an animated film called "Little Taiji", which tells the historical story of ancient invention and creation of Chinese characters. I didn't find it at first, but later I found the key to "solving the problem"
When I was watching TV, I suddenly thought, "Can this TV program let me know the key to solving the problem?" So, I scrutinized it with curiosity: the ancients looked at the sun and thought of drawing a circle with a dot in the middle to represent the Japanese character. So what should I look at in the application question? Is it a condition or a problem? I blurted out questions one by one. At this time, I went on to think: the condition is to find out the basis of the problem, then we should look at the problem. Finally, I thought of it, and then I found the trick of "solving problems". I'm so excited.
In fact, it is very simple. The ancients made words according to the shape, and I will solve the problem according to the problem. First of all, start with the problem, grasp the problem and think about it repeatedly. Second, look at the given conditions, solve the problem skillfully, and work out the answer to the question skillfully with the given conditions.
This is a very simple discovery, and later, I thought of the secret of remembering the pronunciation of words. In fact, memorizing words can only be pronounced according to the phonetic symbols.
In fact, based on my "discovery", you can probably think of a lot and even solve many of your own problems. The discovery in life lies in your unwillingness to expose it. So, let's reveal the secrets of life together!
My discovery
In life, we will make many discoveries, and I am no exception. In my memory, there is a discovery that I will never forget.
It was a much colder winter than before. After school, my mother told me with a sad face that her favorite cup was broken. I only gave a sigh and ignored my mother, but when I saw her face developing towards "eggplant", I quickly asked, "What's the matter?" "I was going to pour a glass of water in the morning, but I didn't expect that the cup would explode as soon as the water was poured into it." Mom's face is a little better. I was surprised: "What is the reason?" My obsequious temper came up again. I "whew" into the computer room and looked up the information online. "Oh! It turned out that it was the' expansion with heat and contraction with cold' that caused the disaster! It is also said on the Internet that the reason why wires hang loosely between two telephone poles is also because of' expansion due to heat and contraction due to cold'. If the wires between telephone poles are pulled tightly, the wires will break when they contract due to cold in winter ... "I read a line of information on the Internet," If you say so, expansion due to heat and contraction due to cold is really a troublesome guy! Wouldn't it be more convenient to eliminate it from life? " I muttered.
A few days later, I got my subscription to the publication We Love Science. I saw my favorite "The Magician Rocky and His Students" in it. The protagonist Ye Yuxin also encountered the same problem as his mother-the cup exploded when pouring water, and it talked about the knowledge of heat swelling and cold contraction. I suddenly remembered my whimsy a few days ago, and I was eager to find the answer, so I kept reading, but what I said in it was quite contrary to my thoughts.
According to the book, if there is no "expansion due to heat and contraction due to cold", it will be miserable in winter-even if you turn the heating to the maximum, you will not feel warm, but it will get colder and colder, because the hot water in the heating pipe will not only transfer heat to the radiator, but also to the air around the radiator, and the air will naturally flow to the top of the room when heated and expanded. The cold air in the room will soon flow to fill the position. It is the constant convection of hot and cold air that makes the room warm. If there is no "expansion with heat and contraction with cold", hot air cannot expand with heat, and cold and warm air cannot convection. Even if the radiator is heated again, the room is not warm. It also said that if there was no "expansion with heat and contraction with cold", the gas stove would not catch fire, because the air could not convection and could not take away the burning carbon dioxide, so the fire could not catch fire. At the end of the book, it is also said that water expands with heat and contracts with cold in general, but it contracts with heat and expands with cold at a certain temperature, which is between 4 and 0 degrees Celsius, that is, the lower the temperature, the larger the volume. When water freezes, its volume will increase compared with the original liquid, so water pipes often burst in cold winter. Unexpectedly, without "expansion with heat and contraction with cold", this day really can't be lived.
It's worthwhile to break a cup and gain so much knowledge.