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Introduce a thing and write a composition of 500 words.
1. Introduce how to write a 500-word composition: adopt the structure of total score, and the level is clear and organized; The description of the rain flower stone uses metaphor and personification to make the description vivid and the language lively.

Expressed the author's love and praise for the rain flower stone. Text: There is a stone in front of the desk. It is an authentic rain flower stone that my father brought back when he went to Nanjing for business.

Its shape is very ordinary, with a flat top and no trace of time. Surprisingly, it is incredibly round and very smooth, as if it had been artificially polished.

Wipe away the dust, and you will find that there are patches of green on this rain flower stone, not the weather-beaten green, nor the shiny green, but the faint green, with a little green, like smoke, curling up. In the faint green, with a trace of blood lines, like a drop of blood, seeped into the water, dispersed gracefully, and gathered into one.

Its back is full of fog. The fog, spread in every corner.

Through the veils of the fog, a layer of black ash is looming. This rain flower stone has been with me at my desk for many years.

Once, I accidentally dropped it on the ground, and it fell heavily, and suddenly a corner flew. From then on, it changed its appearance, and it was no longer round, like a full moon in the sky, and suddenly a small piece was bitten off.

I gently stroked its scar, the faint green, reflecting a few blood lines, attached to the milky mist, lined with a little gray, surrounded by a brown, all of which added a bit of charm. A raindrop stone with a gap in the circle can still radiate such brilliance, which makes me realize some life philosophies: who can not stumble in life? However, only when you get up after a fall and forge ahead again can you show your life value.

2. An unforgettable thing in 500 words is that in the long river of my memory, there are many things, like floating clouds in the sky. Time flies in a hurry and has drifted away with the wind as time goes by.

But this incident is deeply imprinted in my mind, and I still remember it clearly. This happened last week. The class teacher was holding a paper to give us the first exam in the whole semester. I wrote my name in fear and trembling, and stared at the six-sided paper.

My heart is pounding, I think: I must be serious and not careless! This test paper is not very difficult. I finished it with a brush. Time is a little short, so I scribbled out the difficult reading questions, and only checked them roughly before handing in the papers.

After class was over, I saw the students holding a word, and I talked about the exam in a word, guessing my score. I feel particularly uncertain, so I have to wait for the score in fear and trembling.

After a day or two, the teacher handed out the papers. I'm as anxious as a cat on hot bricks, and I can't wait to know the score right away.

This big red number appears on my test paper. "How is it possible! How is it possible? " I can't believe it. This is the worst score I've ever got in the exam.

Look at Hu Danyang's test paper next door, with a score of 97. "Look at it, I said that the greater the difference between you in the senior year."

The head teacher said sarcastically. This sentence was firmly engraved in my heart, and tears swirled in my eyes.

This score hit me hard, and I didn't listen to a word the teacher said. I finally got to school, and I went straight home. I couldn't bear the tears of disappointment any longer, and the quilt was wet bit by bit.

3. Introduce how to write a 500-word composition of a thing: adopt the structure of total score, and the level is clear and organized; The description of the rain flower stone uses metaphor and personification to make the description vivid and the language lively. Expressed the author's love and praise for the rain flower stone.

Text: There is a stone in front of the desk. It is an authentic rain flower stone that my father brought back when he went to Nanjing for business.

Its shape is very ordinary, with a flat top and no trace of time. Surprisingly, it is incredibly round and very smooth, as if it had been artificially polished.

Wipe away the dust, and you will find that there are patches of green on this rain flower stone, not the weather-beaten green, nor the shiny green, but the faint green, with a little green, like smoke, curling up. In the faint green, with a trace of blood lines, like a drop of blood, seeped into the water, dispersed gracefully, and gathered into one.

Its back is full of fog. The fog, spread in every corner. Through the veils of the fog, a layer of black ash is looming.

This rain flower stone has been with me at my desk for many years. Once, I accidentally dropped it on the ground, and it fell heavily, and suddenly a corner flew.

From then on, it changed its appearance, and it was no longer round, like a full moon in the sky, and suddenly a small piece was bitten off.

I gently stroked its scar, the faint green, reflecting a few blood lines, attached to the milky mist, lined with a little gray, surrounded by a brown, all of which added a bit of charm.

A raindrop stone with a gap in the circle can still radiate such brilliance, which makes me realize some life philosophies: who can not stumble in life? However, only when you get up after a fall and forge ahead again can you show your life value.

4. Introduction to a composition of things Hello everyone! I'm a salesman, and then I'm going to sell you an item-a desk lamp. Today I'm going to sell you a product: a desk lamp. This desk lamp is very novel, and it looks very nice when viewed from the outside. There is a tray below and a lamp on it. In this way, it means putting a thick cotton-padded jacket on this lamp. There is also a small lamp below, which is called a "night light", so it is very convenient to turn it on at night. In front of it, there are two buttons: one for the headlight and the other for the small light. When you turn on the headlight, you can't help but shout, "Wow! How bright it is! And it doesn't sting your eyes! To tell you the truth, this is an eye protection lamp, which will never bring you myopia. Turn on the small lamp, and you will still shout, "Wow! So beautiful, so cute! " Let me tell you, this is the light that was turned on at night, very bright! Do you know the benefits of this desk lamp this time? After introducing this lamp, do you know something about its appearance and benefits? What do you think? If anyone wants to buy, hurry to snap up, the number is limited! Goodbye.

5. An unforgettable thing in the composition of introducing things in 500 words

In the long river of my memory, there are many things, like floating clouds in the sky. Time flies in a hurry and has drifted away with the wind as time goes by. But this incident is deeply imprinted in my mind, and I still remember it clearly.

This happened last week. The class teacher was holding a paper to give us the first exam in the whole semester. I wrote my name in fear and trembling, and stared at the six-sided paper. My heart is pounding, I think: I must be serious and not careless! This test paper is not very difficult. I finished it with a brush. Time is a little short, so I scribbled out the difficult reading questions, and only checked them roughly before handing in the papers.

After class was over, I saw the students holding a word, and I talked about the exam in a word, guessing my score. I feel particularly uncertain, so I have to wait for the score in fear and trembling.

After a day or two, the teacher handed out the papers. I'm as anxious as a cat on hot bricks, and I can't wait to know the score right away. This big red number appears on my test paper. "How is it possible! How is it possible? " I can't believe it. This is the worst score I've ever got in the exam. Look at Hu Danyang's test paper next door, with a score of 97. "Look at it, I said that the greater the difference between you in the senior year." The head teacher said sarcastically. This sentence was firmly engraved in my heart, and tears swirled in my eyes. This score hit me hard, and I didn't listen to a word the teacher said. I finally got to school, and I went straight home. I couldn't bear the tears of disappointing, and the quilt was wet bit by bit ...

6. Introduction to a Thing Composition Plum blossoms stand upright in Ao Shuang, and chrysanthemums are brilliant and colorful. However, I like lotus flowers because they are fragrant and muddy.

Lotus leaves are beautiful, like big green disks and small green umbrellas. They were crowded together, making a rustling sound, and seemed to be whispering.

After a storm comes a calm, the lotus leaf is covered with water drops, like pearls. A gust of wind blows, and the water drops roll back and forth on the lotus leaf, just like naughty children skating on the skating rink. Lotus flowers are more beautiful. They are graceful, fragrant and colorful.

As long as you see their graceful figure standing above the green leaves, you can't help but stop and enjoy it. A lotus flower is as white as snow and as pink as chardonnay, while a lotus flower with a bright red inside is like a little girl rolling a colorful skirt with lace.

Some petals of the lotus have been fully opened, like the lotus seat of Guanyin Bodhisattva. Some only opened two or three petals, like a shy little girl covering her beautiful face with her hands.

Some are buds, and the petals are tightly closed together, like a small white sleeping baby. When the wind blows, the lotus flowers dance and give off a burst of fragrance.

Butterflies and bees come. Butterflies are busy competing with lotus flowers, while bees are busy collecting honey. At this time, a beautiful picture is in front of your eyes.

Lotus is not only beautiful, but also very useful. Lotus can be used as medicine and tea.

If you soak a few lotus petals in boiling water, after a few minutes, the fragrant lotus tea will be ready. Take a sip, it's refreshing.

Ah! I love lotus, your beauty, your fragrance and your noble quality.

7. A 500-word description of a thing The computer that China people regarded as mysterious decades ago gradually unveiled its hazy veil and entered the homes of people in China.

Computer is another name for computer. Because of this, people often associate it with addition, subtraction, multiplication and division, which makes our students who have been studying hard for 16 or 7 years full of expectations for it. When I was in primary school, the computer used pen calculation: when I was in middle school, I learned abacus calculation, which has reached the highest level of "dividing what I see by nine"; After going to college, it is obvious that pen calculation and abacus calculation can't catch up with the speed of calculation, so we have to use the logarithmic slide rule with poor accuracy.

After the participants do it, the calculation accuracy is required to be high, and the hand-operated computer is used for multiplication and division calculation. This hand-cranked computer is worthy of the name, and it is specially used for "calculation" of multiplication and division. Although it was noisy to use and its speed was far less than that of the widely used calculator, it was a rare "baby" at that time. 1in the spring of 979, the secretary of the Party branch in my hometown saw me using a hand-cranked computer at work, and after returning to my hometown, he really praised me, saying that I could work out a number as many as several hundred thousand in the blink of an eye, which was really amazing!

The first time to educate me about computer knowledge came from relevant magazines in the sixties and seventies of last century. In an introduction to the application of computers, I saw an introduction to prove the four-color theorem by computers outside the picture. The four-color theorem, a truth recognized by geography, means that only four colors are needed to draw a map, but it lacked the necessary proof at that time. With the help of computer, it took more than two hours to prove it. If manual proof is used, it really needs generation after generation.

In the mid-1980s, with its inherent mystery, computers entered the gates of some government offices and units in the provincial capital, and people greeted the arrival of the first batch of computers like new wives. At that time, many units stipulated that computers should be installed in special rooms, paved with wooden floors, and raised appropriately; Operators must wear overshoes to enter, and their hands and faces should be clean; Wait a minute. At the leadership meeting of a unit, there was a verbal decision that non-staff members were not allowed to enter the computer room to prevent "virus" infection.

The widespread use of computers is a manifestation of social progress. People's application of it, from the initial general operations such as transmitting reports and printing files, has gradually expanded to all aspects of the application of this industry, and the work efficiency is getting higher and higher, which shows the magic of computers. Our highway industry adopts computer drawing, which omits many troubles such as drawing base map, pencil depth, tracing and printing, and the speed is extremely fast. Moreover, the computer drawing has high precision and beautiful pages, which is very popular among users. People do business communication now, so it is convenient and convenient to send an email instead of printing and mailing information. A USB flash drive weighing tens of grams records considerable and rich information and becomes a good helper for carriers to use at any time.

Learning to use a computer requires hard work, otherwise it will be difficult to unveil its mystery. 1998, when I was still on the job, my former unit provided me with a computer, which gave me the opportunity to contact and learn to use computers. That year, I was clumsy at 55 years old. In order not to leave a lifelong regret, I began to learn computer life like a primary school student, and it has been seven years in a flash. In the past seven years, although I have never stopped studying and operating, and I can't remember how many times I "worshipped" Master, I am still not very skilled in fingering, not to mention that most fields have not yet been touched. If we don't make efforts to explore deeply, computers will always be mysterious to us. At this point, I understand why people should "live and learn".

The knowledge stored in the computer is rich in content, and it also contains recreational content. Playing computer games is also acceptable, but it should be moderate. There is an old saying that it is beneficial to open books, which means that if you study, you will always get something. Nowadays, it's ok to say "it's good to turn on the phone". In leisure time, when you are bored, it is also a kind of gain to turn on the computer to play, practice fingering and enlighten your intelligence.

Before the Spring Festival, I had two laptops at once. One was bought, and the other was "given" by naughty little disciples: "Please put a notebook on the table, and then put your chin on the notebook. Well, this is my Spring Festival gift to Master-a notebook to pad the brain. " Both the computer and the brain pad make me happy. I believe that, like the popularization of color TV, the popularization of computers will not be too far away, and it will be faster than the popularization of color TV.

8. Introduce a composition of "Ding Ding Ding!" The industrious little alarm clock woke me up again! My little alarm clock has a green, round body and two yellow ears-like two steamed stuffed buns.

The glass screen is the face of the alarm clock, which is very clean. Below is the base, and there are two buttons on the back to adjust the time.

The small alarm clock has three hands. They seem to be racing. At the beginning, the second hand, minute hand and hour hand must stand on the same starting line.

The game started, and the second hand ran ahead quickly. The minute hand takes a step forward every time the second hand completes a lap.

And the laziest hour hand is left at the end. Three needles are running on the runway of time, running all the time ... The little alarm clock wakes me up every day.

It is like a soldier on sentry duty, reminding me to get up on time and let me see the dazzling brilliance of the sun earlier. This Monday, the little alarm clock woke me up to raise the flag, when I was still in a sweet dream.

But the little alarm clock woke me up: "Get up! Get up! Today is Monday! Raise the flag! " I immediately woke up from my dream, brushed my teeth and washed my face and went to school to raise the flag. I was not late. Thanks to the small alarm clock, it made me get up early.

Small alarm clock, you are an indispensable part of my family, and you are also a small guard in my life. Comments: The context of the little author is very clear, with descriptions of objects and certain rhetoric, which is very good.

9. How to write a composition about something How to write a composition about something? How to write a composition about this kind of thing? I'll answer ***5 questions. wei042 knows partner educator 20 19- 12-26. Nature is a wonderful world. There are many magical plants in nature, such as mimosa, spider plant, king flower and poinsettia. However, among these plants, I feel that sunflower is a very magical plant.

Sunflowers in the morning sun are blooming with golden smiles and seem to be full of gratitude and gratitude to the sun. I looked at the golden smiling face of sunflower and felt it radiate dazzling golden light, like the second sun.

In the sunset, the sunflower is still smiling at the sun, as if reluctant to leave, watching the sun gradually leave, I looked at the back of the sunflower, staring blankly, wondering, does the sunflower's head move like a human? I looked at the sunflower with a very puzzled heart, so I stared at it. The sunrise was moving slowly, and the golden smiling face of the sunflower was also moving slowly. I was puzzled and opened the book and sat next to the sunflower. I read an interesting story about the sunflower in the book. It is said that the sunflower is the mother of the sun, and it escorted her children for fear that it would get lost. This story is full of humor, but the sunflower is really staring at the sun. It is also said in the book that the stem of sunflower contains a wonderful auxin, which is afraid of sunlight, so it turns its back on the sun whenever it encounters light irradiation. At the same time, the cells on the backlight side of sunflower multiply rapidly, and when the sun moves, they also move immediately and turn their back on the sun forever, so when we look at it, we feel that sunflower will shake its small head like a human.

Oh, so that's it. I suddenly realized! Looking at the golden smiling face of sunflower, the breeze is blowing, stroking the head of sunflower, and it feels so kind. There is indeed a lot of knowledge in nature that we need to explore, and we need to study hard to explore the mysteries of nature. Hello everyone! I'm a salesman, and then I'm going to sell you an item-a desk lamp. Today I'm going to sell you a product: a desk lamp. This desk lamp is very novel, and it looks very nice when viewed from the outside. There is a tray below and a lamp on it. In this way, it means putting a thick cotton-padded jacket on this lamp. There is also a small lamp below, which is called a "night light", so it is very convenient to turn it on at night. In front of it, there are two buttons: one for the headlight and the other for the small light. When you turn on the headlight, you can't help but shout, "Wow! How bright it is! And it doesn't sting your eyes! To tell you the truth, this is an eye protection lamp, which will never bring you myopia. Turn on the small lamp, and you will still shout, "Wow! So beautiful, so cute! " Let me tell you, this is the light that was turned on at night, very bright! Do you know the benefits of this desk lamp this time? After introducing this lamp, do you know something about its appearance and benefits? What do you think? If anyone wants to buy, hurry to snap up, the number is limited! Goodbye.

10. Introduce a thing Composition 400 pencil case A pencil case like a circle is 20 cm long and 7 cm wide.

Its capacity is very large. There are many pens in the pencil case, including pens, erasers, pencils, automatic pencil, refills and so on. It has only one layer, and a white net can be seen outside. There are some small black and white fish and red fish on it, and a big shark is chasing those small fish.

There are red and black dots on it, and there are many English letters such as the English letter seawaduld. It has some functions. Whenever I write math, the pencil boy in it will jump out and let me use it. When I make a mistake, the rubber lady will jump out and let me use it.

And when writing Chinese, Miss Pen in the pencil case will come out and let me do my homework. This is what's in my pencil case. It can be used by me.

Although the pencil case is very common, it has great functions. It allows us to hold a lot of pens, and its appearance is very beautiful, and its style is clever and easy to use.

Stationery and its contents are dedicated to helping me. Ah! Pencil box, you keep my school supplies and serve me day after day and year after year.

Thank you, and I hope you will spend a wonderful time in primary school with me.