Excellent components of silkworm

In daily study, work and life, everyone will be exposed to composition to some extent. According to different genres, composition can be divided into narrative, expository, practical and argumentative. What is the composition you have seen? The following is my excellent silkworm composition, for reference only, and I hope it will help everyone.

Silkworm Excellent Composition 1 Silkworm is the embodiment of purity and beauty, and it is angels in white's white dress. It made a great contribution to mankind, but later it was a moth that put out the fire and brought about its own destruction.

In early spring, my uncle gave me four or five little things as big as sesame seeds, which made me very happy. I found a small box with some tender mulberry leaves in it. After a few days, the little thing as big as sesame began to wriggle, slowly gnawing at the small leaves with its small mouth. Seeing that these young people are flexible, I really feel proud of the spring breeze and full of vigor, and my heart is sweeter than drinking honey. According to adults, silkworms at this time are called "ant silkworms".

After a long time, the silkworm shed its skin several times and became a beautiful "mature silkworm". "Cooked silkworm" is three or four centimeters long and has become translucent. Their food intake has also greatly increased. The first thing I do when I come home from school every day is to pick up mulberry leaves, and I never delay. One day, I saw that the silkworm baby didn't eat or drink, and people said that they would go up the mountain. I tied the grass into a mountain, and they climbed up the mountain, squatted on it, and began to spin silk, and the white silk in their mouths kept flowing. These silks are wrapped around the silkworm's body in a small oval house. They are still spinning silk and making cocoons. At first, I saw its weak body crawling up and down in the cocoon, and the cocoon silk was entangled. However, after a while, the silkworm body disappeared into the cocoon. A pink "peanut shell" appeared in front of my eyes, and it was bulging. My mother told me that beautiful colorful silk is made of this kind of silk.

I am a little sad to see the silkworm baby become like this, and tears are spinning in my eyes. "Spring silkworms will weave until they die" is a true portrayal of spring silkworms.

Everyone likes cute little silkworms, but do you know how the life of silkworms evolved? In other words, how did it change from silkworm to pupa and then to moth?

With this question, I bought silkworms and mulberry leaves. I put them in a spacious and clean paper box, and then observed them carefully: they look soft and thin, and they look so cute when they wake up. It has many thick and short feet, which are tightly sucked on mulberry leaves like suckers, and it shakes its wrinkled face from time to time like a seahorse, just like a little old man chanting scriptures! What's more strange is that it has a small thorn like a sword on its ass, but it feels soft. "sasha vujacic" silkworm babies eat mulberry leaves. Soon, a small semicircle hole appeared, my stomach bulged, and I fell asleep. After waking up, it defecates first and then eats, so I work as a cleaner and breeder every day. The baby grows up every day, peeling once every four or five days. Every time you peel it, it will turn white and get bigger, and your appetite will get better. After peeling it for about four times, the silkworm baby went up the mountain. I made some piles of hay and put them in a cardboard box. They climbed up one by one, spinning their heads back and forth. After a while, I wrapped myself in it and turned into an oval white ball, like pebbles in a stream. According to the data, it needs to be skinned once, so it becomes a pupa. After a while, they will hatch and fly away like moths.

Ah! Silkworm's life is really ordinary and great. In order to become moths, they spit out the last silk and tied themselves up. It can be said that they have gone through hardships and achieved brilliant results. It's not easy!

One morning in spring, my father came back from morning exercise and brought me back five silkworm babies. I was so excited by this unexpected surprise that I couldn't stop watching it.

Silkworms can get up slowly, look a bit like sea cucumbers, and their bodies will contract, which is interesting. It eats mulberry leaves, and its mouth keeps arching, so cute! In the silkworm plaque, the silkworm babies are rippling like fine ripples, vying for the fat and tender mulberry leaves, making waves like drizzle and breeze.

As the days passed, the silkworms grew up day by day. Three molts, and finally saw the last molt. That night, it first tightened its body and then stretched its tail. Ah! A pair of golden feet first emerged from the belly. After a while, it bit its tail with its mouth, contracted its skin, and lost a little ... I don't know how long it took, and finally faded its old skin. Silkworm's white, fat, soft and shiny body seems to be wearing a white dress, which is very beautiful.

Silkworm babies become transparent day by day. Just one morning, my mother woke me up from my sleep: "Silkworms are cocooned." I jumped out of bed and ran to see, "Ah, it's really cocooned." I saw them holding their heads high, their mouths constantly spitting out white silk, forming a small ball in the shape of duck eggs. It seemed that the two silkworms had woven a cocoon together because the place was too small or something. Mother said: "Silkworm cocoons can be processed into pollution-free silk, which is the best raw material for making clothes."

I watched the cocoon wall getting thicker and thicker, and the silkworm figure became more and more blurred. I asked my mother anxiously, "Will the silkworm baby die if it is wrapped in it?" Mother said with a heavy heart, "When the cocoon is finished, the silkworm will die, but a new life will be born. You know, silkworms have a short life span. It asked us nothing, but it brought us wealth. "

I seem to understand a lot: the world is beautiful, and we should learn from the spirit of silkworms, asking for nothing in return but dedication.

I love my silkworm baby.

In spring, we keep many silkworms at home.

At first, my silkworm was dark and had a body like a little ant. They ate the bright green mulberry leaves with relish. They were so cute that people called them ant silkworms.

Three days later, the "little black" babies faded and turned brown, but their heads were still black. Once, I put the little silkworm on my finger, and the little silkworm was very nervous. 16 My little foot clutched my hand tightly, as if to shout, "Master, help!" "I couldn't help laughing and carefully put the silkworm back on the mulberry leaf.

After another three days, the silkworm turned white, its head turned brown, and fine hairs grew. It has horns on its tail. I like to call it a thorn, but when I touch it with my hand, I find it is soft. This time, I put the little silkworm on the high wall again. The little silkworm sticks tightly to the wall with the sucker on her foot. I can feel it trembling with fear in the air! I chased it with my hand, hoping that it could climb to the ground by itself, but it just lay on the wall nervously, motionless. Hey, do silkworms also have acrophobia!

Day after day, the young silkworms ate and fell asleep. /kloc-After 0/9 days, the silkworm babies began to turn yellow and transparent. I know they're starting to cocoon.

Twelve days later, the silkworm moth began to break out of its cocoon. The silkworm moth has a diagonal line, six feet, a pair of wings and prominent eyes on its head. I heard that silkworm moths can't fly, so I tried my best to Doby. Once, maybe I was in a hurry, and the silkworm moth actually sprayed me with a flesh-colored liquid to attack. I quickly turned its tail around and saw it spray liquid all over the floor.

It seems that rabbits will bite when they are anxious, and timid silkworms will spray water when they are anxious, haha!

Silkworm is the embodiment of purity and beauty, and it has made great contributions to mankind.

A few days ago, the school reporter was very happy to receive a notice to adopt a silkworm baby. On the day of adoption, many young journalists adopted more than one box.

I am very excited to see small creatures squirming. A few days later, when the young silkworms grew up, I began to observe their actions carefully. Silkworms can get up slowly and look a bit like sea cucumbers. Stretching and shrinking are interesting. After a few days, many silkworms couldn't eat or move, as if they were dead. I am in a hurry. I get up in the morning to see them, and I have to watch them several times at noon and evening. Later I found that they were molting. It's a pity that I missed this opportunity to watch the young silkworm shed its skin.

As the days passed, the silkworm grew up day by day. This time I finally saw the silkworm shed its skin. In the evening, the silkworm sleeping in the small box next to my pillow began to shed its skin again. They contract their bodies first, then straighten their tails. Ah! A pair of golden feet first emerged from under the stomach. After a while, it bit the skin with its mouth, its tail shrank, and its skin dropped a little ... Somehow, after molting, the silkworm stopped eating and drinking. Dad said that silkworms were going to cocoon, and I was extremely happy. But after a few days, the silkworm became thinner and thinner and began to curl up. A few days later, all the silkworms died. I'm very sad. I asked my father what happened. My father said that the silkworm leaves were in the refrigerator, which was too cold. Silkworms have loose bowels after eating them. I am really ashamed, because of my carelessness, more than a dozen young silkworms died.

Silkworm, it only needs a few mulberry leaves, but what it contributes to people is exquisite silk. This reminds me of a poem: "Silkworms in spring will weave until they die ..."

How noble the quality of silkworms is!

People naturally have many secrets to study. By chance, I discovered the secret of silkworm molting.

At eight o'clock that morning, I found the silkworm I caught lying in the box and thought: cake! It's not dead. But when I touched it, it was still hot, and I was finally relieved. He stood there anxiously, watching the changes of the silkworm. Silkworm has been lying quietly, and I am more and more anxious. Like ants on hot bricks. It was only at 3 pm that the head and neck began to twist slowly and continuously. The stone in my heart was finally put down, not dead, which frightened me. But what is it doing? I will wait forever. At about 3: 20, the silkworm stopped turning and began to crawl forward, but it crawled slowly. After climbing for a few minutes, I suddenly found that its yellow tail gradually turned brown and its head began to twist up and down again.

At about 3: 30, the silkworm raised its head harder and climbed faster. Suddenly, the silkworm's body seems to be getting longer. What happened? I stared at the silkworm with rapt attention. It turned out that the silkworm crawled forward for 5 minutes and finally climbed out of the shell formed by the old yellow skin. It turns out that the silkworm just keeps shaking its head to shed its old skin!

The old skin on the silkworm has fallen off, but why doesn't the skin on its head fall off? I was secretly worried, but it didn't worry at all and stopped. At 3: 43, I was about to leave when I suddenly got impatient. The silkworm held its head high and its tail cocked. I stared at the silkworm intently, only to see it shake its head, shrink back and keep twisting its tail. Soon, the silkworm's head emerged from its old skin bit by bit. At 3: 52, the silkworm's skin fell off from beginning to end. After watching the silkworm molt, it was about to leave when a miracle happened: just three minutes after molting, the silkworm's body changed from white to bleached white, and its weight increased a lot. Just like magic. Ah! The whole silkworm becomes crystal clear.

In fact, there are many such things around us. As long as we observe carefully, we can find that this is something that books can't learn!

Silkworm Excellent Composition 7 20xx Saturday, April 20th

Strange thing, my silkworms are getting less and less every day. I lost one the other day. Yesterday, I didn't even see the body. Do you find it strange?

What's going on here? I think I have to get up at night. I drank four glasses of water before going to bed last night. Because I like to sleep, I will sleep until 12 noon the next day (on the premise of weekends), so I filled myself up first and didn't want to sleep. But when I thought I wouldn't fall asleep, I lay in bed for a while, but I fell asleep in a daze.

Hey! When I got up the next day, I counted and one of my silkworms disappeared. I searched inside and outside the box, but I couldn't find their bodies.

20xx Friday, April 25th

When I open my box, I will see a beautiful silkworm with black and white rings on its body, which is very beautiful.

20xx Saturday, April 26th

Today, my silkworm ran out of mulberry leaves, so I asked Sister Fan downstairs for mulberry leaves. Sister Fan is an expert in sericulture. When Sister Fan saw a beautiful silkworm in my box, I smiled proudly. Unexpectedly, Sister Fan said, "Throw this silkworm away quickly, it will eat."

"Why?" I asked.

"This kind of silkworm is called lazy silkworm. Is the worst silkworm. It not only eats a lot of mulberry leaves, but also eats other silkworms. "

"I-"I bowed my head.

Actually, I can't bear it. I take Sister Fan's words with a grain of salt.

Until one day, I was looking at my silkworm. My mother saw it and said, "Baby, what are you doing?"

"Mom, I found that my silkworms are getting less and less."

"Silly boy, you forgot to add mulberry leaves to silkworms every day when you were at school. The silkworm was starving, so I threw it away and forgot to tell you. "

Oh, I see. It suddenly dawned on me. Silkworm, you are really wronged! It seems that you are not only not bad, but also an excellent variety! This is really a big discovery! Tomorrow, I must tell Sister Fan.

Thanks for watching! ?

Today, I will tell you about silkworms. Silkworms are yellow eggs that become ant silkworms. When the ant silkworm was born, it was only four or five millimeters long, and the size was like a very thin "dead Soochow". Ten days later, the ant silkworm evolved into a silkworm. The color of silkworm is white and gray, its length has increased by one centimeter, and its food intake has increased a lot, but the silkworm excrement is still invisible. Ten days later, the silkworm has gained weight and is six centimeters long. It can eat three mulberry leaves, and the silkworm excrement is like a "small bomb", and the color is completely pale white.

I am also an "experimenter". I just found a bamboo pole, a thin thread and a green mulberry leaf. First of all, I tied one end of the line to a bamboo pole and the other end to a business. Then I put the silkworm on the sponge. I made a sail of a sailboat with three chopsticks and a rectangular piece of cloth. I put them together again. Finally, I put the silkworm on it and put the sailboat on the water. I catch silkworms like fishing. As a result, I found that the silkworm crawled slowly after landing ... An hour later, he finally climbed onto the table.

Gradually, the silkworm has begun to spin silk, and its body is short and yellow. After five or six days, the silkworm has completely contained itself, just like "losing weight".

I was drunk by the pupa again. I just put a small hook in the pupa. I tied one end of the rope to the plane and the other end to the pupa. I started the plane and drove around the balcony for more than a dozen times. Turns out there's nothing wrong with the pupa!

Then, something seems to jump out of the pupa. Ten days later, a silkworm moth came out. I looked at the pupa again and found that there was liquid on one head of the pupa, which seemed to be something chemical.

Silkworm's life is over. In 50 or 60 days, they will begin to mate. But first, males and females must "get married" before mating. After mating, the male dies first. Why don't females die with males? This is because females don't die before laying eggs.

I feel that silkworms are the most dedicated insects. This is because silkworms have to distribute the mulberry leaves they used to eat to their offspring. We should learn this spirit.

One day, I bought thirty or forty cute little silkworms in the market. When I went home and looked carefully, several silkworms had black stripes on their backs and small black spots on their sides, as if they were covered with a tiger skin. They are very cute. Grandma says these silkworms are called "tiger silkworms". Those white fat silkworms are also unique and equally lovely. There is also a small tip at the tail of the silkworm, like a small tail, which is really pleasing.

Silkworms are especially interesting when they eat! It has more than a dozen feet at the bottom of its body, especially six feet at the front. Its sole is glued tightly to the mulberry leaf, and it eats the mulberry leaf bit by bit with its little yellow mouth. Huh? Suddenly, a silkworm stopped moving, not eating or drinking. No matter how I move, it won't help. I thought it was dead. I'll call grandma quickly. Grandma said, "This is the phenomenon that silkworms shed their skins." It doesn't matter. "I stared at it motionless, and sure enough, after a while, a layer of brown skin came out, and I cried happily. Because I have learned a new knowledge.

Another time, I saw a silkworm leave without eating, and its color turned yellow. I thought, "Could it be malnutrition?" I asked my grandmother who raised silkworms well since childhood. Grandma smiled and said, "you little fool, it's not malnutrition, it's silkworm cocoon." Look! Many clothes we wear are made of silk. " I was very happy (also smiled, but at the same time). Since then, I have paid more attention to silkworms. After a few days, the silkworm really began to spin silk, only to see it slowly climb to the corner, first "weave" a layer of "protective net" outside, then spin silk layer by layer, and slowly weave into cocoons. When people happily pick cocoons, silkworms die silently in the cocoons.

Silkworm, I love you, and I love your silent dedication. "Silkworms in spring will weave until they die". You gave people white silk, but you silently waited for death without complaint. Silkworm, I was moved by your spirit, and I admire you!

One day in March, the teacher sent us some silkworm eggs and let us go home to observe the hatching process of silkworm babies.

I carefully put the silkworm eggs into my carefully made small paper box. Looking at the small black spots as big as sesame seeds, I can't help thinking: when will this hatch successfully? One day, two days and the third day, I suddenly saw two or three thin silkworms in the carton. These silkworm babies are only about two or three millimeters long, and they are all black, like a string. They crawled around on the paper as if looking for food. Because there were no mulberry leaves at that time, I found some lettuce leaves to spread on them. They eat very seriously. After a few days, all the silkworm babies hatched, and they scrambled to eat leaves. I'm so glad that all the silkworms have finally hatched! My heart is as sweet as honey.

One day, I suddenly found many black spots on the leaves. Just when I was puzzled, grandma helped me solve the mystery: "These black spots are silkworm excrement"? . In the next few days, I found that the silkworm baby gradually changed from black to dark brown, and then from dark brown to light brown, and its body grew bigger and bigger. Until today, I suddenly saw some silkworm babies begin to turn white. I think this is probably the symbol of becoming a white silkworm. I also saw a silkworm molting with my own eyes. I saw that it twisted its body very hard and contracted its body bit by bit. After a long time, I finally molted successfully. Silkworms go through four or five molts in their lifetime. As soon as the eggs are laid, they eat mulberry leaves day and night, and they are fat in vain. When their bodies grow to a certain extent, they stop eating, start spinning cocoons, and finally break cocoons into moths, lay hundreds of eggs and start a new round of life continuation. Their life is very difficult.

Silkworm's life is selfless! It is a great life! Small body contains valuable spirit worth learning!

Excellent Composition of Silkworm Baby 1 1 In April and May, mulberry trees are in full bloom and silkworm babies are quietly popular on campus. The teacher gave me some silkworm babies. They are so cute and chubby. I thought they were caterpillars.

I feed them mulberry leaves when I get home. I like watching silkworms eat. Silkworm babies eat mulberry leaves just like children eat watermelons. They eat them in rows and eat them so fast! It's interesting to watch them wolf down and listen to the subtle rustling. Silkworm babies play with each other when they are full. Some silkworm babies climb on another silkworm baby, and some are surrounded by two or three. These lines are very interesting. Sometimes it makes me laugh.

I'm busy with these silkworm babies. I want them to change some fresh mulberry leaves every morning and evening, and I also want to see if they have grown up from time to time. As the young silkworm grows up day by day, the demand for mulberry leaves increases gradually, so I often buy a big bag and put it in the refrigerator to ensure that the young silkworm can eat fresh mulberry leaves every day. After a week of growth, the silkworm baby begins to spin silk. They first set up a shelf in the corner of the box and then began to cocoon. Cocoons are oval, white and yellow. At first, I could see silkworms spinning in cocoons. The more I vomited, the more dense I vomited. I vomited all night and finally I couldn't see it. A week later, the silkworm became a pupa. I picked up a cocoon and shook it. I heard a noise inside. It turns out that the pupae turned from silkworms are dangling in it. After 8- 10 days, the pupa became a moth. The moth pecked through the cocoon and ran out. A moth has wings, but it can't fly. It just crawls around and doesn't eat. After two days, the moth began to lay eggs. The eggs were yellow and as big as small grains of rice. After laying eggs, the short life of silkworms is over.

The life span of silkworms is very short, only 1-2 months. Silkworms' lives are short, but they are worth living because they have made contributions to people. Silk can be used to make clothes and quilts ... it's really "spring silkworms must weave until they die"