The snail writes essays on his own

1. Based on the snails you have observed, write an essay and ask yourself to imagine yourself as a snail

Snail

One day in summer vacation, the sky cleared after the rain. . My mother and I took a walk in the community. The scent of the grass after bathing was so refreshing and refreshing.

I suddenly found many small snails crawling onto the flower bed one after another. They probably came to take a walk and smell the fragrance of the grass. They carry their own houses on their backs and crawl forward slowly. They look so cute! Wherever they crawled, they left a trail like a silver line. I opened my eyes and asked my mother curiously: "Mom, are snails pests or beneficial insects? Why is there a silver line where they crawl?" My mother smiled and tilted her head and replied: "Want to know the answer? Just find it yourself"!

Humph! Find it yourself! I caught three snails, first put them into a clean and beautiful box, and then put a piece of tender green vegetables and rice into the box. They all rushed to crawl towards the green vegetables and chewed them. After a while, I ate all the green vegetables. The rice was not even smelled. I initially concluded that snails are pests.

I started to analyze again, "Why is there a silver line where the snail crawled? I put the snail in my hand, and it immediately crawled into its home with its head and neck. I had to hold my breath and stare. , after a while, it anxiously stuck out its little head to check to see if there were any enemies around it, and then cautiously stretched out its head. Just when I wanted to touch it with my hand, it timidly retracted its head. , I was so annoyed that I accidentally dropped it, and there was a "pop", and its shell was broken. I picked it up with my hands, and when I touched it, it was slimy, and there were still a few small things. I knew what it was, so I looked it up in the book. Oh! It turns out those little things are its feet! The silver line is a kind of gland in the snail's feet, which secretes mucus. It has a lubricating effect, which can reduce the friction between the snail's feet and the ground, so wherever the snail crawls, it will leave mucus. When the mucus dries, it becomes a sparkling saliva line. Oh, that's it! Ah! The book also says: Snails like to eat rotten plants. After eating, they will eat fresh plants and young leaves, so I can conclude that snails are pests.

Children, science is all around us. As long as you are good at careful observation, analysis and research, you will be an amazing "little scientist". 2. Write a 600-word essay on "yourself"

Parents have probably talked about this topic hundreds of times. They ask us to rely on ourselves in everything, which is self-reliance. It is not only a sign of human maturity, but also what every successful person wants.

There is an inspirational fairy tale about a little snail asking its mother why they carry a big, stupid shell. His mother said: "We can't run fast. To fly, we need a hard shell to protect ourselves. "What about Brother Earthworm?" It can't run fast, and it can't fly. asked the little snail. "It will burrow into the ground, and the earth will protect it." "Mother Snail replied. "What about Sister Caterpillar? It can't run fast, and it can't fly. "The little snail asked again. "It will turn into a butterfly, and the sky will protect her. "Mother Snail replied." Woo hoo. . They have the sky and the earth to protect them, so who do we rely on to protect them? "The little snail asked crying. "We rely on ourselves. We have shells to protect ourselves. "Mother Snail replied. This is a simple fairy tale that tells us a survival skill: the fittest survive and the unfit are eliminated. Life is originally a process of survival of the fittest. If you want to survive, you can only rely on yourself to strengthen yourself. If you can't stand on your own, talk to How to survive.

The Qianlao people are also a sign of their inability to stand on their own. Do the people of the Qianlao clan want their parents to raise them for the rest of their lives? In ancient times, there was a rich man who only had a son when he was 30 years old. He doted on his son very much. Later, his wife passed away and his son became his only relative. Therefore, he doted on his son even more and even refused to let him work and learn skills, for fear of losing this only relative. Resulting in his son's incompetence.

One day he and his son went to play and met a fortune teller, so they made a fortune. The results came out. The rich man can live to be 80 years old, and his son can live to be 60 years old. His son cried loudly and said: What should I do 10 years after my father's death? This fully demonstrates the incompetence of the Qianlao people, and also shows that people who cannot stand on their own will be completely unable to survive without relying on things.

All in all, self-reliance is a must for everyone, but it is often affected by the environment. If you cannot take care of yourself, you will be ruthlessly eliminated by society. 3. Write yourself as a snail and write an essay based on "A Day in the Life of a Snail"

"I want to climb up step by step and fly forward on the blades at the highest point. The small sky has a big sky." Dream..."

I listened to Jay Chou's "Snail" again, and I felt a lot of thoughts every time I listened to it, so much so that I made it my motto!

"I want to climb up step by step, and fly forward on the blades at the highest point. The sky is small, but there are big dreams..." This is the lyrics of "Snail", "I want to climb up step by step." Climb up one step at a time and fly forward on the blades at the highest point." This sentence shows the snail's firm perseverance and perseverance, while "Small sky, big dreams" makes me feel that everyone must Have a dream, then work hard towards this dream, and then use a snail's spirit, you can definitely do it! Dreams are a belief that supports people's thoughts. Without dreams, people have nothing. Dreams are beautiful, but many of them cannot be realized. What's going on? It’s because of the lack of snail spirit. When a snail "climbs" upward, it may slide down 1 meter after going up 2 meters. However, the snail is not afraid of pain or fatigue and continues to climb up. Finally, it can fly forward on the blades at the highest point and fly into its own sky. I think we all lack the snail spirit. With the snail spirit, everything is simple. For example: studying, if you are not afraid of hardship or tiredness, listen carefully in class, take notes carefully, do your homework carefully after class, and review well, the exam will be a piece of cake, no problem!

I want to climb up step by step like a snail and fly to the blue sky on the blades. I hope friends who haven’t heard it will give it a listen and get some feelings from it.

I also hope that everyone will have the snail spirit to build our motherland into a better place! I am Daoxiang and Shenxian. I hope everyone can support me and have the same snail spirit as me! 4. An 800-word essay "Living on Your Own"

Recently, I have always felt a little irritable and physically and mentally exhausted. The biological clock is also constantly changing, so I have forgotten what day and night are. We know that the waking life is day and the sleeping life is night. But life is always reversed in black and white, and life will also get lost in the opposite direction. Life is not life, but life is life. Life requires hard work, not waiting. , let alone asking for it, only hard work and diligence will lead to success. The story of the snail inspired me: the story is like this, the little snail asked its mother: "Why do I have to carry this hard and heavy shell since I was born?" "What?" Mom said, "Because our bodies don't have bones to support us, we can only crawl, but we can't crawl very fast, so we have to rely on this shell for protection." The little snail said: "The caterpillar sister doesn't have bones, so why doesn't she have to carry this hard and heavy shell? "What about the heavy shell?" The mother said, "Because the caterpillar sister can turn into a butterfly, the sky will protect her!" The little snail asked again: "But the earthworm brother has no bones, can't crawl fast, and can't turn into a butterfly, why doesn't he carry it? Where is this hard and heavy shell?" The mother said: "Because the earthworm brother can drill into the earth, the earth will protect him!" The little snail said: "We are so pitiful, the sky will not protect us, and the earth will not protect us. "My mother comforted him and said: "So we have shells. We don't rely on the sky or the earth, we rely on ourselves!" A person's destiny is in his own hands, and the key to his success depends on his way of thinking. Whether his thoughts are consistent with his actions, and his attitude towards failure. Being a strong person is not as simple as casual talk! Especially for people living in today's world, you must have a mature mentality, rich experience, strong self-confidence, and love. Success is close and success is by your side. However, the first premise is that you must always keep your sights on the target. And work hard to get close to the goal, otherwise, everything will be in vain. It doesn’t matter if you start from a low point, because you have to persist because there is hope. The dream is for tomorrow, but the road to tomorrow is at your feet. You must have the mentality of a winner to be able to do everything. Discover the power of success. Open your closed heart, and the sunshine of success will dispel the darkness of failure. Ford said: Most people emerge in the time wasted by others. Darwin said: The way to get work done is love. Every minute, therefore, only by cherishing time can we grasp the destiny of life and be a strong person in life. The same is true in our work. Have you worked hard today? Have you set goals for yourself? Have you worked hard for the goals you set? Did you finally achieve your goal? This depends on your own efforts. No one can help you. You can only rely on your own efforts! Achieve your goals through your own study and efforts. I know this truth very well. Snails know how to rely on their own advantages to compete with nature, let alone us! People must rely on themselves. Your career, your family, and everything you have must be obtained through hard work. In the end, as big as your heart is, the stage will be big. The secret of success is to rely on your own efforts. 5. It is better to rely on yourself than to rely on heaven and earth.

One day, the little snail left his mother and went to see the world alone.

Carrying a heavy shell, it crawled and crawled, but it could not crawl fast. The weather is very good, and the little animals all come out to bask in the sun. As the little snail crawls, he greets his friends: "Hello, friends."

The little snail always thought that there was something else. Animals, like ourselves, all carry shells. However, many of the small animals he met had no shells. He was the only one carrying a heavy shell. Not only was he ugly, he was also very inconvenient to move.

The little snail went back and asked its mother: "Why do we have to carry this hard and heavy shell since we were born?" The snail's mother said: "Because our bodies do not have the support of bones. Ah, I can only crawl, but I can’t crawl very fast, but this shell can protect myself.

"

The little snail then asked: "The caterpillar sister has no bones and can't crawl fast. Why doesn't she have to carry this hard and heavy shell? Mother Snail said: "That's because Sister Caterpillar can become a butterfly in the future, and the sky will protect her." The little snail asked again: "But the earthworm brother has no bones, he can't crawl fast, and he can't turn into a butterfly. Why doesn't he carry this hard and heavy shell?" Mother Snail said: "That's because the earthworm brother can drill into the earth, and the earth will protect him!" The little snail cried sadly: "We are so pitiful!" The sky does not protect us, and the earth does not protect us. What can we do? Mother Snail comforted him: "Son, we don't have anyone else to protect us, but we can protect ourselves."

You see, the caterpillar sister has no shell, the earthworm brother has no shell, only we have shells. They all rely on others for protection, but we don’t rely on heaven or earth, we rely on ourselves. ” 6. The snail mother said: “Child, we don’t rely on the sky or the earth, we rely on ourselves”

Reliance

Reading the above story reminds me of our The development process of the country. During the Qing Dynasty, our country was closed to the outside world and lived a feudal self-sufficient handicraft life. At that time, we were arrogant, vain, and had never seen what industry was or what machines were. Finally, when the enemy invaded, we had no strength to resist and were repeatedly intimidated by foreign guns and artillery. That period was a shame for China.

Butterflies relied on the blue sky, earthworms relied on the earth, and snails relied on themselves... …The blue sky is also dangerous, and the earth is not the most reliable guarantee. Our own strength may not be strong enough to support life without danger. Just like China now, it still has a vast land and abundant resources, but we dare to say that we cannot rely on the sky. Can we rely on ourselves? We can't do it behind closed doors. After realizing the advanced technology of Western countries, the Westernizationists were the first to propose "applying skills to foreigners to control foreigners". After reform and opening up, we actively developed foreign relations. Learn from Western advanced technology and no longer dare to be arrogant. Therefore, at this time, China occupies an unshakable position in the world, and the world does not dare to underestimate it.

Life is precious, and being able to protect yourself is also a kind of reliance. Method, learning is also a skill. For the sake of ridiculous so-called self-respect, vowing to be self-reliant is a kind of dullness in the eyes of others. I said that if you are poor, you will change, and if you are general, you will have better things. When we are trying to protect ourselves, why should we stick to the rules?

We rely on heaven and earth, but also on ourselves, and use all available forces to make ourselves strong. At this time, heaven and earth are no longer strong. It is the big tree we have to rely on, but the ability we have in our hands. 7. Write yourself as a snail and write an essay on "A Snail's Day"

Snail Spirit and Dreams

"I want to climb up step by step, and fly forward on the blades at the highest point. The sky is small, but there are big dreams..."

I listened to Jay Chou's "Snail" again , I feel a lot of emotions every time I listen to it, so much so that I use it as a motto!

"I will climb up step by step, and fly forward on the blade at the highest point. The sky is small. Big dreams..." This is the lyrics of "Snail". "I want to climb up step by step and fly forward on the blades at the highest point." This sentence shows the snail's firm perseverance and perseverance, and " "Small sky, big dreams" makes me think that everyone must have a dream, and then work hard towards this dream, and then with a snail's spirit, you can definitely do it! Dreams are a belief that supports people's thoughts , people have nothing if they don’t have dreams. Dreams are beautiful, but many cannot be realized. What’s going on? It’s because of the lack of snail spirit. When a snail climbs up, it may slide down by 1 meter. But the snail is not afraid of hardship or tiredness, and continues to climb up. Finally, it can fly forward on the blades at the highest point and fly to its own sky. I think we all lack the snail spirit. With the snail spirit, everything is simple.

For example: studying, if you are not afraid of hardship or tiredness, listen carefully in class, take notes carefully, do your homework carefully after class, and review well, the exam will be a piece of cake, no problem!

I want to climb up step by step like a snail and fly to the blue sky on the blades. I hope friends who haven’t heard it will give it a listen and get some feelings from it. I also hope that everyone will have the snail spirit to build our motherland into a better place! I am Daoxiang and Shenxian. I hope everyone can support me and have the same snail spirit as me! 8. Help write a 700 essay on the topic of relying on the sky and the earth rather than relying on yourself

The little snail asked her mother: Why do we have to carry this hard and heavy shell since we were born? Mom: Because our bodies don’t have the support of bones, we can only crawl, but not very fast. So we need the protection of this shell! Little Snail: Sister Caterpillar has no bones and can’t crawl fast. Why doesn’t she have to carry this hard and heavy shell? Mom: Because the caterpillar sister can turn into a butterfly, the sky will protect her.

Little Snail: But Brother Earthworm doesn’t have bones to crawl fast, and he won’t turn into a butterfly. Why doesn’t he carry this hard and heavy shell? Mom: Because the earthworm brother can drill into the earth, and the earth will protect him. The little snail cried: We are so pitiful, neither the sky nor the earth protects us.

The snail's mother comforted him: "That's why we have shells! We don't rely on the sky or the earth, we rely on ourselves." The students must have a profound understanding of the dialogue between the "little snail" and "mother" To understand, please use "reliance" as the topic and write an article of about 600 words. You can describe your experience, express your emotions, make comments, and tell stories. There is no restriction on the style of writing, and you can choose your own title.

[Writing Prompts]. 9. Investigation composition about snails

Investigation composition about snails Snails have strong survivability and are found almost everywhere; in spring or autumn, if there is a light rain, they will be found in corners, under trees, and on leaves. And in the grass, you can often find snails - with long tentacles standing upright and crawling slowly with their shells on their backs... 1. Reasons for choosing the topic Snails are a common small animal. I have always thought that they look strange since I was a child, and I often play with them. .

After I went to school, I got to know it from the book "Natural Science"; I became interested in the phenomena of snails swinging their long antennae, crawling with their shells on their backs, and secreting mucus. My curiosity made me observe it carefully, and as I observed Some doubts arose: Why doesn’t the snail give up its shell and crawl? What does snail mucus do? Are snails valuable to humans? ...These have driven me to follow and observe snails for a long time. Fortunately, snails are easy to catch and raise, which helps me observe and explore them.

2. Investigation My formal investigation started on April 26, 2006. I caught a few snails from Purple Mountain, prepared a large transparent bottle, and built a "home" for them. Observe the snail with a magnifying glass. Through daily observation, writing diaries, asking questions → establishing hypotheses → experimental exploration → collecting data → conducting experiments → reasoning and drawing conclusions; sometimes it is necessary to consult professional teachers to understand the snails step by step and uncover the secrets of the snails bit by bit. Secret, after nearly half a year, I have a relatively complete understanding of snails.

3. Investigation content 1. Through books, we learned that: snails originally lived in water, and later adapted to the environment and landed. Their gills evolved into "lungs" (mantle) and evolved into the land mollusc lung snail. kind. Snails are widely distributed on land. There are more than 40,000 kinds of snails around the world. Although there are many varieties of snails, their internal and external structures are generally the same.

﹙Attached is a diagram of the internal and external structure of the snail﹚ Its layman characteristics: two pairs of antennae, gastropods, and spiral shell. Snails have high edible value and have certain medical, health and beauty effects.

2. Through observation, directly discover: the snail’s head, eyes, nose, mouth, tongue, neck skin, breathing holes, peristalsis of the abdominal feet, secreted mucus, excrement, excretion port ﹑Spiral shell﹙right-hand twist﹚﹑Tail. 3. Through observation and reasoning, we discovered: the snail’s sense of taste, the ability of the neck to secrete mucus near the shell mouth, the ability of the abdominal feet to absorb water, the role of the snail shell, and the ability to self-repair.

4. Through observation and testing, the results are obtained: the snail's vision, smell, touch, snail's food habits, and habits (it likes moisture and darkness, and is afraid of dryness and strong light). 5. Through observation and consultation, we learned: Molluscs, evolution, mantle, respiration, cold-blooded animals, snail winter, reasons for aestivation, internal structure, hermaphroditism, radula.

6. Obtain the results through observation, experiment and reasoning: snails have no hearing, the snail’s nerves are concentrated on the top of the head, the movement of the abdominal feet, the snail crawls at a constant speed, and the role of mucus. 4. Investigation methods and results (1) Snail’s vision, smell, taste, radula, and touch.

Vision: The snail’s eyes are at the top of its long antennae and are only the size of a pinhole. Use a cotton swab to slowly approach its eyes, and observe that the snail's long antennae retract only when it is 5-6 cm away from the eyes. Repeat this several times, which confirms that the snail has vision, but its vision is very weak and can only see 5 -6cm away.

Smell: Feed the snail food with a sexual smell (such as onions, mangoes, etc.), and observe that it will raise its head and neck and crawl away. When the smell is strong, it will retract into the shell. It can be seen that Snails have a sense of smell:. Taste: A snail must touch food with its short antennae before opening its mouth to eat.

Mix the torn white paper with the cabbage leaves, touch it with its short tentacles to find the cabbage leaves and eat them, then mince together several kinds of vegetable leaves that the snail usually eats. The feelers touch here and there to pick out favorite lettuce leaves. From searching for food, it is also proved that the short antennae have an olfactory function; from being picky about eating, it is inferred that the short antennae also have a taste function.

Radula: When a snail is eating, you can observe with a magnifying glass that its harelip-shaped mouth is slightly open, from which the tongue quickly extends and contacts. Information introduction: The snail's tongue is unique in that it is covered with more than 10,000 teeth, called the radula, and has no taste cells.

When in contact with food, the tongue scrapes the food like a scraper for fruits and vegetables. This can be seen from the traces left on the vegetable leaves that the snail has just eaten. The radula becomes thinner after contact with the vegetable leaves. Touch: reaction to the outside world.

Use a cotton swab to touch the snail’s antennae, top of the head, neck, abdominal shell, and tail. Snails retract their bodies with varying degrees of intensity.

If you touch the antennae and top of the head, you will see the body retracting into the shell. If you touch the neck and abdominal legs, you will find that the head retracts into the shell. If you touch the tail of the shell, the body will retract slightly. It is deduced from the observation that the nerves of snails are concentrated on the top of the head.

(2) The speed of snail crawling. Snails crawl on their abdomen and legs, and the speed is very slow. To test the speed of snail crawling on different materials, prepare glass, ceramic tiles, and cardboard. First, place the unfed snail on the glass, place a ruler next to it, and tie a small piece of apple with a thin string to lure it. Place the food about 5-6 cm within the range of the snail. After a while, the snail emerges from its shell and finds the apple crawling towards it. , pull the thin line parallel and gently along the edge of the ruler, so that the snail can only see and smell the apple but cannot eat the apple; the hungry snail has to crawl forward in a straight line if it wants to eat the apple.

Taking the snail's abdomen and tail as the starting point and end point, after 60 seconds, the crawling distance is 12 cm from the ruler, and the crawling speed is calculated to be 0.2 cm/s. Also tested on ceramic tiles and cardboard, the crawling speeds were 0.15 cm/s and 0.1 cm/s respectively.

Snails crawl at different speeds on different materials. Glass crawls faster than cardboard. The reason is: glass has less smooth resistance. Observation conclusion: The snail does crawl very slowly.

(3) The movement of the abdominal legs and crawling at a constant speed were observed in three test experiments. Although the speeds were different, it was found that the speed remained unchanged during each crawling process. The crawling speed of a snail is directly related to the movement of its abdominal legs. If you observe the abdominal feet of a crawling snail from the back of the glass, you can see that the contraction of the abdominal muscles is transmitted from the back to the front, and at the same time it sticks to the surface of the object to prevent backward sliding. When the contraction reaches its maximum At the front end, the gastropods are released, allowing the snail to fully extend, its body slides forward, and the muscles of the gastropods contract in waves.

After observing for a long time, I found that the frequency of its wave-like contraction remains unchanged. I put the snail on my arm and crawled, and felt quietly that its movement rhythm was always the same. Based on this, I judged that the abdominal and foot movement is uniform. After reasoning, it was concluded Result: The snail is indeed crawling at a constant speed.

(4) Function of mucus 1. Snails are molluscs with soft abdominal feet.

During crawling, the snail's abdominal feet secrete mucus to prevent the abdominal muscles from being injured and sticky due to direct friction with the ground.