The crab shell is hard, and there are some faint patterns on it. Its eyes are very small, like two black rice grains, which retract when touched.
The two front paws of a crab are like pliers. It hurts to be pinched by it. If you tease it with a straw stick, it will get angry. Two' pliers' are held high, like the iron sand palm of Mei Chaofeng in the TV series "Legend of the Condor Heroes", which is very awesome.
2. Write a composition about crabs by yourself, which can give you a reference:
My home in the country has a fish pond several acres in which there are fish and crabs. In summer, I always like to catch some crabs in the basin and watch them come alive. I am very happy. The crab carries a hard shell on its back, and three small forks protrude from each side of the shell. In Beijing opera, a military commander has three flags on his back, which is majestic. When it meets the enemy, it grips the other side with its big pliers. At first, it will spit out some bubbles. After opening the pliers, they clamped each other and were clamped several times. It hurts! It walks and runs differently, crawling around, full of pride, like a furious drunk. When it is angry, it waves huge pliers and drums two black eyes. It's very cute. This crab has a lovely appearance. There is a faint flower mosquito on its shell, which is almost the same color as aquatic plants and can confuse opponents. Its claws are sharp and thin, with thin Mao Mao on them. What I look most like in SHEN WOO is the blue crab. It looks like a tank, invincible, and the shell on its back looks solid and straight, which makes the crab a kind of protection. Small claws, small but sharp, like spears. The spear and shield on the crab make it a brave soldier. Its pliers are flat and round, like a dragon knife, pliers are like steel forks, and a pair of eyes the size of rice grains are born inside. The crab's shell is blue-gray except its abdomen, and it is covered with a gray blouse. Its abdomen is milky white, like wearing a white shirt. Don't underestimate its shiny belly. It can be very useful. It can tell whether it is a man or a woman, a round woman or a three-dimensional man. The eggs laid by the mother crab are yellow and stick together, like tiny grains of rice, hidden underwater. After listening to the introduction, it is also very cute. Let's grab a few and observe them quickly.
The shape of crabs describes the flat and round bodies of these crabs. All green, with a big shell on his back, just like a warrior in armor. Eyes as big as rice grains, mouth open and close. When the room is particularly quiet, you can still hear the crab's mouth. The most striking part belongs to its legs. Eight legs are evenly distributed on both sides of the body. The best is two sharp pliers. There are a row of small teeth on the upper and lower sides of the jaw, and there are black hairs on the pliers.
The crab shell is hard, and there are some faint patterns on it. Its eyes are very small, like two black rice grains, which retract when touched. The two front paws of a crab are like pliers. It hurts to be pinched by it. If you tease it with a straw stick, it will get angry. Two' pliers' held high, like the iron sand palm of Mei Chaofeng in the TV series "Legend of the Condor Heroes", awesome!
4. Description of the appearance characteristics of crabs The hard carapace on crabs can protect crabs from natural enemies, but the carapace will not expand with the growth of the body.
Therefore, the growth of crabs is intermittent, that is, after a period of time, the body will continue to grow after the old shell falls off. The largest crab on the earth is the spider crab, with a foot width of 3.7 meters, and the smallest crab is the bean crab, with a diameter of less than half a centimeter.
Although the crab is small, it covers everything. After removing the hard shell of the crab, we can find that the body part of the crab is protected by a shell. These shield-like shells are called crustaceans by biologists.
Crabs are symmetrical and can be divided into forehead area, eye area, heart area, liver area, stomach area, intestine area and gill area. Crabs have appendages on both sides of their bodies.
The appendages of the head are called tentacles, which have the functions of touch and smell. Some appendages have the function of mouth, which is used to tear food and send it into the mouth. Crab chest has five pairs of appendages, which are called chest feet.
A pair of appendages at the front end are equipped with powerful claws, which can be used for foraging. The other four pairs of appendages are crab's feet, and crabs rely on these four pairs of appendages to walk and move. They walk in a unique and interesting way, mostly sideways rather than straight.
Except monks and crabs, they all walk straight. Crabs spend most of their time looking for food. They are not picky eaters and eat whatever their claws can catch.
Small fish and shrimp are their favorite, but some crabs eat seaweed and even animal carcasses or plants. Crabs eat other animals, and other animals may eat crabs. For example, humans regard crabs as delicious food.
And waterfowl eat crabs! Some fish like to eat crab feet as much as humans. When young crabs and underage crabs float in the sea in groups, they may be devoured by other marine life, so crabs have to lay a lot of eggs when laying eggs.
5. Crab composition 400 words requirements (modeling, action) Crab I have a crab at home.
It has lived in my house for almost two years. Crab is dressed in blue-gray armor, just like a commanding general, very cute, with a pair of pliers, one big and one small, and a pair of eyes the size of mung beans.
Crabs are carefree all day and don't have to do anything. Sometimes they walk around in the bucket. Crabs hear squeaks when they walk. When it is tired, it stops to have a rest. If you are hungry, have some rice. When crabs first come to my house, they always spit out some sludge in their mouths, which makes the water in the bucket very dirty. I want to change the water for half a day.
I tell you, it is difficult to change water for crabs: at first, you have to take it out carefully, or you will be caught by it; Then pour out the dirty water; Then clean the bucket and fill it with some water; Then put the crab in, and it will be fine. After listening to my description, you must find it very hard to change the water for crabs! But if you change too much, you won't feel this way.
I like my crab. I've been raising it for almost two years. I'm familiar with it. Sometimes I play with it, sometimes I play hide-and-seek with it. It brings me a lot of fun.
6. Description of the appearance characteristics of crabs The hard carapace on crabs can protect crabs from natural enemies, but the carapace will not expand with the growth of the body. Therefore, the growth of crabs is intermittent, that is, after a period of time, the body will continue to grow after the old shell falls off. The largest crab on the earth is the spider crab, with a foot width of 3.7 meters, and the smallest crab is the bean crab, with a diameter of less than half a centimeter.
Although the crab is small, it covers everything. After removing the hard shell of the crab, we can find that the body part of the crab is protected by a shell. These shield-like shells are called crustaceans by biologists. Crabs are symmetrical and can be divided into forehead area, eye area, heart area, liver area, stomach area, intestine area and gill area. The two sides of a crab are connected by appendages. The appendages of the head are called tentacles, which have the functions of touch and smell. Some appendages have the function of mouth, which is used to tear food and send it into the mouth.
Crab chest has five pairs of appendages, which are called chest feet. A pair of appendages at the front end are equipped with powerful claws, which can be used for foraging. The other four pairs of appendages are crab feet. Crabs rely on these four pairs of appendages to walk and move. The way they walk is unique and interesting, and most of them walk sideways rather than straight. Except monks and crabs, they all walk straight.
Crabs spend most of their time looking for food. They are not picky eaters and eat whatever their claws can catch. Small fish and shrimp are their favorite, but some crabs eat seaweed and even animal carcasses or plants.
Crabs eat other animals, and other animals may eat crabs. For example, humans regard crabs as delicious food. And waterfowl eat crabs! Some fish like to eat crab feet as much as humans. When young crabs and underage crabs float in the sea in groups, they may be devoured by other marine life, so crabs have to lay a lot of eggs when laying eggs.
Fiddler crabs are common crabs on the seashore. Why is it called fiddler crab? Because these crabs wave their claws as if they were waving in the tide, that's how they got the name "Zhao Chao". In addition, the giant claws of male fiddler crabs seem to play the violin, so they are also called fiddler crabs or piano crabs.
7. A 450-word composition about crabs
Eight feet, holding the drum, two scissors dancing in front of the drum, born with arrogance and singing. (Shooting animals), congratulations, you got it right! This is a crab. Today, I made an observation on it.
A crab looks like an enlarged spider, but it has two more legs than a spider. It wears a suit of tan armor to defend against natural enemies. The oblate body has four legs on each side, and each leg has four parts. There is a pair of striking clips in front. These two guys are like iron tongs. They are good guys for attack and self-defense, and they are also necessary weapons for home travel. There are also a pair of small eyes the size of soybeans on that armor, which are sneaky. Turn the crab over and look at its abdomen, then squeeze it. Male tip, female circle.
In addition, the crab's living habits have three characteristics.
First, crabs are rampant, spitting bubbles while climbing. Although their bodies are smaller than my slap. In fact, they climbed up like runaway wild horses and disappeared in an instant.
Second, it is fierce. It doesn't behave for a moment, especially when eating. It's even more fierce, like someone wants to use it to grab food. If you touch its back at this time, it will hold you tightly and you can't get rid of it.
Third, it's hungry, and it won't starve to death for ten and a half days. I remember that during the Spring Festival, our family of three went home for the New Year. A week later, we came home, thinking that the crab was dead and ready to "collect the body" for it. But after entering the door, the crab was safe and sound, waving pliers and doing morning exercises leisurely. How hungry it is!
This is my crab, a male and a female!
8. Composition describing crabs. Today, as soon as I came home from school, my mother said that she would give me a surprise. Let me open the washbasin with the cover. Wow, it's six little crabs!
These little crabs have a hard shell like a stone, small eyes like small black beans, eight powerful-looking feet, and two powerful pliers. They are dishonest, and their eight feet keep moving. It's really bullying. Mother grabbed the shell of a small crab and pulled it out of the water. After a while, the little crab kept spitting bubbles in its mouth. It was breathing.
What does the little crab eat? I really want to know. Mom asked me to ask the computer. I found that crabs mainly eat shrimp, small fish, shrimp skins and other foods, so I took some shrimp skins to feed them, but they didn't eat them. Later, while I was away, a little crab played hide-and-seek with me. My mother and I looked everywhere. I looked everywhere in the kitchen and sofa with a flashlight, but I couldn't find it. Finally, my mother found it under the building block gun I inserted.
Little crabs are so cute.
9. The composition describing crabs is 320 words, one foot, one drum, two scissors dancing in front of the drum, born with arrogance and singing in his mouth.
(Shooting animals), congratulations, you got it right! This is a crab. Today, I made an observation on it. A crab looks like an enlarged spider, but it has two more legs than a spider. It wears a suit of tan armor to defend against natural enemies.
The oblate body has four legs on each side, and each leg has four parts. There is a pair of striking clips in front. These two guys are like iron tongs. They are good guys for attack and self-defense, and they are also necessary weapons for home travel. There are also a pair of small eyes the size of soybeans on that armor, which are sneaky.
Turn the crab over and look at its abdomen, then squeeze it. Male tip, female circle. In addition, the crab's living habits have three characteristics.
First, crabs are rampant, spitting bubbles while climbing. Although their bodies are smaller than my slap. In fact, they climbed up like runaway wild horses and disappeared in an instant.
Second, it is fierce. It doesn't behave for a moment, especially when eating. It's even more fierce, like someone wants to use it to grab food. If you touch its back at this time, it will hold you tightly and you can't get rid of it.
Third, it's hungry, and it won't starve to death for ten and a half days. I remember that during the Spring Festival, our family of three went home for the New Year. A week later, we came home, thinking that the crab was dead and ready to "collect the body" for it. But after entering the door, the crab was safe and sound, waving pliers and doing morning exercises leisurely. How hungry it is! This is my crab, a male and a female.