The exciting final began, and the dog Bruce and snail slowly tried their best. At first, Bruce, who was flexible, had the advantage, but when he crossed the wooden bridge carefully, the snail slowly caught up with him, rolling and crawling, and the audience burst into laughter when they saw his face covered with ashes. But then again, the ruler has his strengths and the inch is short. Although the dog Bruce is a little tired, the snail is slowly full of vitality. I saw that his housekeeping skills were difficult: he shrank into his shell, stepped back several steps, aimed at the wooden bridge and rolled out like hot wheels. Too hard, not only crossed the wooden bridge, but also rushed to the last hill under the action of inertia. There was a stir in the audience. I didn't expect this trick at the crucial time. Then I watched slowly blowing kisses to everyone on the mountain, and then I did a beautiful backflip and rolled to the finish line.

② The story of a mathematician is 200 words.

3. Hua

Born in a grocery store family, he was sickly since childhood, but with strong perseverance and lofty pursuit, he finally became a generation of mathematicians.

Hua especially liked math when he was a teenager, but his math performance was not outstanding. 19 years old, an excellent article shocked the famous mathematician Xiong Qinglai at that time. From then on, under the guidance of Mr. Xiong Qinglai, he embarked on the road of studying mathematics. In his later years, he popularized and applied pure mathematics to industrial and agricultural production for the sake of national economic construction, and struggled for the construction of the motherland all his life!

Grandpa Hua carefully cultivated the younger generation, so that young mathematicians can thrive and stand out. After work, he did not forget to write some popular science books for his friends for many years. The following is an interesting math game that Grandpa Hua once introduced to his classmates:

A teacher wants to know which of his three students is smarter. He used the following methods: show them three white hats and two black hats in advance, then tell them to close their eyes, put on their hats respectively and hide the remaining two hats. Finally, tell them to open their eyes, look at other people's hats and say the color of their hats.

The three students looked at each other, hesitated for a moment, and said in unison that they were wearing white hats.

Smart reader, think about it. How do they know the color of the hat? "

In order to solve the above problems, let's first consider the problem of "two people 1 black hat and two white hats". Because the black hat is only 1, as soon as I wear it, the other party will immediately say that he is wearing a white hat. But he hesitated for a moment, which showed that I was wearing a white hat.

In this way, the problem of "three people, two blacks and three whites" will be solved. If I wear a black hat, the two of them will become a question of "1 two people with black hats and two people with white hats". They can answer it right away, but they all hesitated for a while, which means that I wear a white hat and all three of them have gone through the same thinking, so they all think it over.

Look here. Students may clap their hands and say it is wonderful. Grandpa who came to China later complicated the original problem. How to solve the problem of "n people, n- 1 black hat and several (not less than n) white hats"? In the same way, it is easy to solve. He also warned us that being good at "retreating" complex problems, "retreating enough" and retreating to the most primitive place without losing importance are the secrets of learning mathematics well.

(3) 200 words of water snail in the third grade composition, please don't look for it online.

What is a water snail

(4) How do snails crawl? The composition fragment is about 200 words.

On Saturday, I played on the grass behind my house. Suddenly, a little thing caught my attention-a snail lying motionless on the trunk of a genus. By the way, how do snails climb? With this curiosity, I immediately began to study this problem. I have to catch some snails first. I searched the trunk carefully, but I couldn't find it. Is this little guy playing hide-and-seek with me? I hurried home and asked my mother. My mother smiled and said, "Shu Jie, I suggest you look in the grass."

Yes, how could I forget such an important thing? Didn't Teacher Yan tell us before that snails like to stay in dark and humid places? So, I took the cup and went to the open space behind the house. Sure enough, I caught many snails in the grass. I put the snail on the concrete floor and took out a magnifying glass to observe it carefully. I found that when snails crawl, they use the lowest part of their bodies. Snail's feet grow in the abdomen, that is, the abdominal feet.

So, how does a snail crawl on its stomach and feet? I put it on a piece of glass again. I saw it crawling on the glass, leaving a layer of liquid on its abdomen. Touch it with your hand, it's sticky, and that's what the science teacher told us about mucus. The snail moved forward step by step, leaving a long white "tail" behind. It turns out that snails move forward step by step by mucus. No wonder the snail will leave white marks where it climbs.

⑤ What are the characteristics of snails? The composition is limited to 200 words.

Little snail

There are several small snails in my family, which my mother gave me when I celebrated June 1 ST.

A small snail is similar in shape to a snail, but its shell is brown. Some snails vary in thickness, with yellow, black and white patterns running through them. Its body, sucker and head can be retracted into the shell. Brown round brain has two pairs of tentacles, one of which is very long and has two black eyes the size of a needle tip at the top. According to the book, the snail's eyesight is very poor, so it is no wonder that it always shakes its head when it is looking for food, and only eats when it touches food. Snails always stick out their long necks when they look up, a bit like giraffes! Connected to the head is a light brown body with a dark brown channel in the middle of the back. The color of the sucker is dark brown, and the surface is rough, like there is a layer of small sand on it.

Snails have a very interesting life habit. They eat at night. I think it may be because they crawl slowly, are easy to be found by other animals, and are afraid of being delicious to other animals, so they come out for dinner at night. Snails like dark and damp places. For this reason, we put wet sand in the pot where snails are placed, and put it in a corner that is out of the light. So, they keep quiet and don't run around. The food they eat is very miscellaneous, cabbage. It ate them all. Eating stick noodles is the most interesting. I mixed the stick noodles into a thin paste, and they glued their whole faces on it to drink. In a short time, they became a big painted face.

I really like these little snails. Besides feeding them on time every day, I change the sand and take a bath once a week. Snails also bring me new fun.

After reading this composition, we can really see these lovely little snails. It seems that the little author is still good at raising small snails. Look, how well he observes! What "eyes the size of a needle tip", "the surface of the sucker is very rough" and even "like dark and humid places" and "stick your whole face on it to drink" are clearly seen and introduced. Careful observation is the premise of writing a specific composition. Through observation, you have a concrete and vivid image in your mind, and then you can write something concrete by grasping the characteristics of things. Writing is realistic. This is exactly what the little author did. It captures the characteristics of small snail, such as "the body, sucker and head can be retracted into the shell", "the crawling speed is slow", "like dark and damp" and "the food is very miscellaneous", and writes the interest of small snail, which really brings him fun.

When writing about the appearance and life habits of small snails, this essay begins with "the appearance of small snails is similar to that of river snails" and "the life habits of snails are very interesting", which not only points out the main contents of each paragraph, but also makes the article compact and complete.

6. The story about two snails in the high school composition.

Rush forward one by one

All landowners snail life composition 200 words.

Only to find that my brother was grasping at salt and was at a loss. I think it is a shame that my brother killed a small snail that has nothing to do with himself. I don't care, but also take the lives of chickens and cows? You must hurt these poor little animals. He said that his brother grabbed something shiny and ran away after the rain. I put snails on the coffee table and have the right to live. I spilled it on snails. I went to play in the garden on the second floor of my house, as if to wake up its companion. It turns out that snails are also a small life. I stopped him: Why is my brother so cruel? Animals should still be bubbling around the shell like us. My brother was later educated by me: "Oh, let him know something. I was wrong and found many snails crawling slowly on the ground. " When I returned to the hall, I soon became a lifeless liquid! I have long heard that snails will melt when sprinkled with salt, so I caught two and went home to play. I went to the kitchen and cut some radishes for the snail. It looked at the empty shell, but it didn't help. Suddenly, I didn't get hit by a "shell" of salt particles. Fortunately, one of them is safe, and my body is melted in half. The other one was shot and rolled in pain, and we survived for food. Another snail is slowly approaching, which is too bad.

The composition of snails, cacti and elephants is 200 words.

Silkworm babies, snails, elephants and ants take part in the competition, and the prize of the competition is a particularly beautiful colored shell. Brother Snowman and Sister Moon volunteered to be referees. Everyone chose a night to start the competition, and uncle cactus and sister mushroom also came to be cheerleaders.

The game began in everyone's expectation. The elephant rushed out of the starting line first, followed by ants and snails, followed by silkworm babies. The competition is fierce. As time went on, it was evening soon. By this time, the elephant had left the other three players far away. He thought, "Maybe I can have a rest now", so he found a place to sleep. Silkworm baby felt very depressed when he saw that he was so far away from the elephant, so he decided to give up, found a mulberry tree and began to spin silk to build a house by himself. Snails and ants still ran hard and finally caught up with elephants at dawn.

During the day, Brother Snowman and Sister Moon don't know where they went. When the snail saw that the referee had left, he thought, "I can hide on the elephant, so maybe I can win the championship easily." So the snail sneaked under the elephant's nose and hid, waiting for the elephant to wake up and take it to the game. The ant saw it, but still said nothing. He lowered his head and tried to run forward.

The elephant didn't wake up until afternoon. As soon as he woke up, he hurried on and finally reached the finish line before dark. After reaching the finish line, the elephant thought he was the champion and began to cheer. At this time, the snail jumped down from the elephant's nose and said proudly, "Haha, I am the first!" " "The elephant was very angry when he saw it! At this time, Sister Moon appeared, and she announced the result of the competition: the elephant was indeed the second place, while the silkworm baby abstained and did not rank.

The snail thinks he is the first, so he is very happy. He reaches for the prize. As a result, Sister Moon reached out and stopped her, saying, "Snail, you cheated, so you didn't rank." The snail was shocked, but insisted, "Did anyone see me cheating? I need evidence to speak. The referee is absent during the day. " Sister Moon doesn't admit her mistake when she sees snails. She took out a computer from behind, started it and put it in front of the snail. "Although I was away, everyone's behavior was recorded by the computer. Only the ant has been running hard. It is the first to reach the finish line, so the ant is the champion. "

The ant took the prize from Sister Moon. This is a beautiful colorful shell. The moonlight shines on the shell, shining like an ant's smile.

Composition of a big tree and a small snail, 200 words, grade three.

There is a lovely snail in my home. I found this little snail in the flower bed.

The snail is brown all over and carries a spiral "small house". This is its shell. This snail is very timid. As long as I gently touch its shell, it will immediately retract its whole body. After a while, it will stick its head out of the shell a little bit, just like a scout.

This little snail has two pairs of tentacles, one long and the other short. The short pair grows below, just like two probes. If its tentacles touch something during crawling, it will stop or crawl around. The long pair grows on it, and those are its eyes.

The little snail climbs slowly, but there is always a silvery white "path" where it climbs. I asked my mother curiously, "mom, mom, why did the snail leave this" path "where it climbed?" My mother touched my head and told me, "That's because snails crawl with their stomachs and feet. When it crawls, it secretes a kind of mucus, which can not only help it climb quickly, but also prevent it from falling when crawling underground or on a straight wall. " Oh, there is such a magical effect.

Small snails like to grow in dark and humid places. So it often comes out at night when the dew is heavy. It likes to eat vegetable leaves, so it is also a naughty "destroyer".

Attending the snail race composition of 200 words.

On Friday morning, the rain stopped and there were many snails on the ground in front of my house.

I caught a male snail and a female snail. I named them Xiaobai after my mother and Xiaohei after my father. I let Xiaohei and Xiaobai race on the table.

When the race started, "Xiao Bai" immediately rushed to the finish line and tried to escape halfway. I grabbed its shell and it immediately shrank into it. I'll put it down at once. It felt that the danger was gone and slowly came out of its body. But' Xiaohei' is still sleeping at home. Finally' Little Black' came out, and' Little Black' ran to the finish line, surpassing' Little White' and became the first in the competition.

I put Xiao Bai and Xiao hei on the door again. This time, Xiaohei didn't think about the shells, but climbed towards the finish line. He immediately surpassed Xiao Bai, and Xiao Bai did not show weakness and climbed towards the finish line. However, helpless Xiaobai struggled to climb up, but he still couldn't surpass Xiaohei. In the end, Blackie won. The little black team beat the little white team 2-0.

So an interesting game is over!