Its stem is very long and a little curved, with some small black spots on it. There are more than a dozen other stalks protruding from the stalks.
There are leaves on the stem, about the size of a palm, like a duck's paw; There are almost seven or eight leaves on the rhizome. There is also a green ball, which is the fruit of Xanthium sibiricum.
There are many thorns on the fruit, and the thorns have small hooks. There are about fifty or sixty thorns on a fruit. I touched it with my hand. Ah, it pricked, and it still hurts a little.
The fruit of xanthium likes to prick people! Once, my parents and I launched a "Xanthium War". My mother caught me off guard and held me firmly. It hurts! I caught it with my hand. Hey, it really hurts to hold my hand.
I attacked my mother in order not to be outdone. This is my grandmother's xanthium.
2. The composition "I am Xanthium" in the third grade of primary school. A cocklebur has a little cocklebur, and the little cocklebur is growing happily.
Suddenly one day, a little white rabbit ran over and said to Xiao Xanthium, "Jump on my back!" " "Little Xanthium is afraid to go," said Little Rabbit. "I'll take you to a place you want to go!" "Perhaps this sentence ignited their curiosity, and all five little xanthium jumped on the rabbit's back.
Rabbit after rabbit asked them where they liked it. The first one said, "I'm going to the desert, because it's a golden mountain made of gold coins." The second said, "I'm going to the river, because it's a sea of crystals." The third said, "I'm going to light a fire! Because the fire is dazzling and bright! " The fourth said, "I'm going to stay in the tree hole because it's warm." The fifth said, "I want to stay in the soil, because the soil is where I really take root!" " "
Rabbits run fast when they know where they want to go. Rabbits first came to the desert. He shook himself and shook off the first seed. The rabbit ran to the river again and threw the second seed into the water. The rabbit rubbed the fire with flint and put the third seed into the fire. Little Nutbrown hare's good friend Bird helped him put the fourth seed in the tree hole. The rabbit shook off the last seed in a beautiful garden.
The next spring, Xanthium sibiricum, which fell in the desert, drowned in the river, burned to ashes in the fire and dried up in the tree hole. Only the fifth seed that fell in the soil thrived, making the garden more beautiful!
If I were a cocklebur, I would be the fifth cocklebur!
3. Xanthium sibiricum Composition Today, on our way to practice, Teacher Chen discovered Xanthium sibiricum for the first time.
Then I took it off and showed it to us. We find it very interesting. Everyone picked some to play with. I put the picked Xanthium sibiricum in the palm of my hand and observed it carefully: Xanthium sibiricum is like a prickly ball with a green round body in the middle.
I excitedly showed Xanthium sibiricum to Teacher Chen. Teacher Chen said, "Xanthium sibiricum can stick to your clothes." Before I came to my senses, Mr. Chen had pasted Xanthium on my clothes, and Xanthium was firmly stuck on my sweater.
After a while, I want to talk to Song Xiyu. Just turned around, I heard Song Xiyu cried "ah! Yang Siyuan, you have a bunch of xanthium on your head! " I don't believe it. Reach out and touch "Ah!" I really have a cactus-like xanthium on my head. Song Xiyu said, "No hurry, no hurry. I'll help you choose. "
Soon, all the students knew that they came from too many chefs to help me choose, which made me grin with pain ... It happened that we had to gather at this time, so I had to get on the bus with messy hair. Before I told the teacher, the "quick talker" in our class had already told the teacher.
Teacher Chen and Teacher Xie hurried to look at my Xanthium. Teacher Chen said, "It's over."
Although teacher Chen keeps saying "it's over, it's over." However, the teachers acted: the teacher pressed my hair roots and carefully helped me pick xanthium.
Although it hurts me occasionally, the teachers are very careful. It took them some time to pick the xanthium from my head. Ah! Xanthium, you really hurt me today.
There is a beautiful animal in the forest. Its name is butterfly.
Butterflies always flap their beautiful wings and fly among the blooming flowers. Their two pairs of wings are as beautiful as flowers, and flying makes people feel like flowers flying. Butterfly's colorful appearance is not only beautiful, but also has stealth function! According to people's ignorance of camouflage at that time, Wan Weiqi, an entomologist of the former Soviet Union, used the principle that the color of butterflies was not easy to be found among flowers, covered military facilities with butterfly-like camouflage, and dressed the military base into a big camouflage uniform, which won the final victory.
In the same way, people later produced camouflage uniforms, which greatly reduced the casualties of soldiers. This is the contribution of butterflies.
The constant change of satellite position in space will cause the sudden change of temperature, sometimes the temperature difference can be as high as 200-300 Baidu, which seriously affects the normal work of many instruments. Inspired by the fact that scales on butterflies automatically change their angles with the direction of sunlight to adjust their body temperature, scientists have made the temperature control system of the satellite a louver, and the heat dissipation capacity of the positive and negative blades is quite different. A temperature-sensitive metal wire is installed at the rotation position of each window, which opens and closes with the temperature change, thus keeping the internal temperature of the satellite constant, which solves a major problem in the aerospace industry.
People also invented many things by using animals or plants, such as beehives to inspire people to build water cubes, and Xanthium sibiricum to inspire people to invent velcro.
. . Let's explore the mysteries of nature together.
5. Who can give me a composition of "Revelation from Xanthium sibiricum"? Eager to appreciate the masterpiece. 3. Enlightenment from Xanthium sibiricum.
On Sunday, my family went to Lashan to play. I play hide-and-seek with my mother. I hid in the bushes. After I came out, my mother smiled and said that I had become a hedgehog. It turns out that the clothes on my head are covered with xanthium.
When Xanthium sibiricum is mature, it is covered with many small thorns, and the top of each bristle has barbs, which can firmly grasp the fur of animals and is not easy to fall off. If people or animals pass by them, these small thorns will stick to the animals. When small animals run around, they will bring the seeds of xanthium everywhere. It travels with animals.
Xanthium sibiricum has made great contributions to mankind. Swiss inventor George likes to take his dog for a walk in the forest. When he went home for a walk, he found that his trouser legs and dog hair were covered with grass seeds. Grass seeds are firmly attached to dog hair, and it takes some effort to pull them down. This phenomenon aroused George's curiosity. He carefully observed the grass seed with a magnifying glass and found the mystery. It turns out that the top structure of each thorn of Xanthium sibiricum is a small hook, which can be easily hooked on the pants with terry structure. After repeated research, he later invented nylon velcro. Velcro is composed of fabric with small hooks on one side and fabric with small plush loops on the other side, which has the characteristics of instant bonding and instant tearing. Widely used in clothing, shoes and hats, bags and so on. Xanthium sibiricum can also be used as hardening oil for high-grade perfume, paint and soap. , and has many uses.
Animals and plants in nature are of great help to human beings. We should cherish nature.
Comments: It's really an interesting story. The little things in life are unremarkable, and there are such interesting origins, thanks to people who are good at observing. Let's observe nature together and get more enlightenment!
6. Inspiration from nature-Xanthium sibiricum's composition naturally gave human beings a lot of inspiration and was the earliest "teacher" of human beings. There are many strange things in nature, and animals and plants have their own unique characteristics.
For example, when the wind blows, dandelions fly in the blue sky, like some elves dressed in white. People invented parachutes through its characteristics of fluttering with the wind, so that when people jump in the air with parachutes, they won't get hurt.
Others were invented by animals. For example, horses run very fast, and humans will think: If only we could invent a machine that runs faster than horses. Time flies, with the continuous development of science and technology, human beings invented the car, which allows us to reach our destination quickly when traveling. People also invented airplanes by imitating the flight of birds. At that time, if we were going far away, it was not fast enough to take the bus. People look at birds flying in the sky and think, if only we could fly. Man invented the airplane again.
Human beings are smart, but without the nature of "teachers", we dare not even think about it, let alone invent and create. It is precisely because of this "teacher" that human beings can boldly imagine and constantly invent and create.
Nature, the "teacher" of human beings, is precisely because of it that our life is no longer boring and ordinary, and our life has become full of imagination and colorful! Nature, you are the "teacher" of mankind.
7. Write a composition about dandelion and Xanthium grape. Hello, everyone, I am the seed of Xanthium. I'm wearing a green coat covered with sharp thorns. Don't mess with me, or I'll treat you badly!
Look, a little rabbit is coming. I immediately jumped on it, lay on it in the sun, and "traveled" with it.
Rabbits are running around in the forest. I saw Sister Dandelion. I shouted, "Hello, Sister Dandelion!" "She nodded to me and floated under the blue sky and white clouds with the wind. Looking at her back, I was lost in thought. Suddenly I heard a cry. I pricked up my ears and listened carefully. Oh, it turns out that Brother Grape was taken away by a bird. He shouted, "Help! Help! "He doesn't know that this bird is taking him to settle in other places! I can't help laughing. At this time, the little rabbit felt itchy and rubbed it on the trunk. I also jumped into the soft soil and had a good sleep.
When I woke up, I had grown into a small sapling, and I was desperately absorbing nutrients from the soil. Now, I have grown into a big xanthium. If you want to see me, come to me in the forest!