Explanatory article 300 words

In normal study, work or life, everyone will inevitably come into contact with composition, which is a narrative way that people express the relevant knowledge, experience and thoughts stored in memory in written form. In order to make your writing easier and more convenient, here are seven 300-word expository compositions I have compiled, hoping to help you.

1 Hope is a big tree, full of bright fruits. As long as you find it, your life will be full of brilliance. Sow the seeds of hope, share hope with others, and the world will be full of love.

I remember my mother told a story about skaters. She keeps practicing every day, and she thinks she can get good grades in the competition. But at the beginning of the game, she slipped in the first movement of three consecutive turns, which brought her great frustration. However, she did not give up on herself. She quickly stood up from the ice and jumped into more difficult movements, which fascinated the audience. Finally, she won the second place. Imagine that if she slips again and again without hope, she will definitely not get good grades in the exam, so she should know how to hold on to hope, because hope will bring sweet fruits.

It is important that we not only cherish hope, but also spread it. In The Gentle Light of Gondal, it is mentioned that the protagonist goes to Gondal to distribute food to the poor local residents. A family of eight has only one bag of food. They even invite people who have no food to eat at home. Really touching! Many facts have proved that even in difficult times, hope can still spread, and hope is everywhere.

We should embrace hope, spread hope and make the world full of love and warmth. Let's sow the fruits of hope together!

After reading this topic, you may be surprised and say, "How could it end in failure?" Why didn't it end in success? "This topic is really puzzling.

Come to think of it, yes, even if you win the championship, you still have to break a new record, and you won't stop until you know it's over. Isn't this a failure?

Someone once said: "There is no best, only better!" Failure and success are only one-sided words, and "best" is only relative to "bad". Whether you are successful or not, as long as you have worked hard and struggled, it is all good. First, second … these rankings are just by-products. A real athlete is always breaking through and bringing forth new ideas, and his pursuit is endless.

There is no ultimate winner in the world, because the world is constantly improving and developing. Maybe today you are the "best", but what about tomorrow? How about the day after tomorrow?

There is no ever-victorious general in the world In the process of understanding and transforming the world, people can only constantly turn defeat into victory, but can't win every battle.

The weather is getting hotter and hotter. I looked up out of the window and saw the scorching sun burning the earth mercilessly, and the earth was smoked straight. Pedestrians on the road scurried around without masks, leaning in the shade. Several people sat under a small tree in the sun and fanned their fans impatiently.

It's 20xx now. Due to the greenhouse effect caused by air pollution and the attack of El Ni? o phenomenon, the global temperature is warming, the ice layer in the North and South poles is melting, the sea level is rising, and coastal cities are threatened ... This has become an important issue for countries to study and solve.

I'm studying a chemical that changes from a liquid to a transparent film when it enters the air. It not only has the function of adjusting temperature, but also has excellent high temperature and cold resistance. It can not only absorb all kinds of rays, but also adjust the contents of oxygen and carbon dioxide in the air. Soon after, the research was successful, and I named it "Earth Protector 1".

Factories in various countries began to mass-produce "Earth Protector I", and since then, the global temperature has begun to normalize.

Hello, my name is Candy Dog. I am slim. I look like a boy from the outside. I have a blue head and a blue body. Almost everything is blue. How beautiful! There are two little angels on my clothes, one is blue and the other is green! How happy they are to fly freely under the blue sky and white clouds! "

My food is not rice, milk, meat and bones, but a black and thin refill. Spit it out of your mouth when you eat. As long as someone gently presses on my head, the black and thin refill will spit out. Little master and children, I drew an envious look on my head!

I like to slide freely on white paper, leaving black footprints, smiling faces of children and beautiful lines like waves ... Do I know who I am when I go home? To me, I am a slender, long, beautiful and lovely mechanical pencil.

Oh, I really want to forget to introduce my little master. His name is Li Zejun. He is a lively and clever little boy. Every time he does his homework, he always looks for me in his schoolbag, but the young master's handwriting is not very good, and he often writes typos. His mother always said to him, "Write horizontally and vertically, and don't always write typos ..." Young master, I hope you write beautifully and don't write typos! Otherwise I feel embarrassed, too!

Okay, that's enough. Goodbye, I'm going back to my "home" to rest!

As we all know, this typhoon was worse than the last Lee Tae, with a magnitude of 14 or above, so we all delayed going to school for two days.

According to the statistics on September 7th 16, this year's No.3 typhoon "Lee Tae" has caused six provinces 1930, including Zhejiang, Anhui, Fujian, Jiangxi, Henan and Hubei. 65438+100000 people were affected to varying degrees, 124 people were killed, 3 1 people were missing, and 183 people were urgently transferred and resettled. 60,000; A collapsed house. 70,000 rooms, 27 damaged. 70 thousand rooms

Wenzhou is the area with the worst typhoon. The news said that when the typhoon came, they told the village names to leave and move to schools and many safe places, and the doors of each house were locked to prevent everyone from going home when the village Committee was away. At present, the soil in many areas of Wenzhou has begun to loosen, and the typhoon will step down, so the village Committee asked to move to a safe area near the mountain.

Zhejiang is also a region greatly affected by typhoons, and we in Zhejiang have suffered direct economic losses of 39. 900 million yuan, missing 13 people, 25 people died, and the affected area of crops was 8. 70,000 hectares, and 50 victims were resettled. 60 thousand people. Last time, due to the typhoon in Zhejiang, we suffered huge losses, many casualties, huge economic losses and a lot of economic property.

My hometown is in Nanyang, Henan Province, with a long history and culture, so it is called "Nandu" and "Imperial City". Rich in specialty products, Nanyang is famous all over the country mainly because of "dushan jade".

Nanyang dushan jade is one of the four famous jade in China, located in Dushan, 8 kilometers north of Nanyang, hence the name "Nanyang Duyu". It was first collected in the Spring and Autumn Period and the Warring States Period. There are more than 70 kinds of natural colors such as red, orange, yellow, green, cyan, blue and purple. High hardness, good luster, fine texture and high transparency. It is a good raw material for carving jade. People call it "jade" and have the reputation of "Nanyang jade".

Dushan jade is a specialty of Nanyang, unique in China. Nanyang dushan jade is known as one of the four famous jade in China, with a history of more than 6,000 years. It is bright in color and warm in texture, and has long been respected by collectors, occupying a very important position in the jade market.

The exploitation and utilization of dushan jade has a long history. A dushan jade jade shovel unearthed in Nanyang County has a history of 4500 years. In ancient times, dushan jade was made into various handicrafts, bearing the ancient people's desire for reincarnation and wealth from generation to generation. Nowadays, Nanyang jade carving products have developed into figures, flowers and birds, landscapes, jewelry, tea sets, wine sets and so on. Moreover, dushan jade is especially suitable for carving landscapes because of its rich colors. Dushan jade Wan Li Great Wall, a national treasure, is now on display in the Henan Hall of the Great Hall of the People.

Everyone I meet likes and admires such a beautiful dushan jade, not to mention me.

Explanatory composition 300 words 7 Last week, Mr. Zhou assigned a very interesting assignment, so that we could group freely and complete a practical activity. Li Chenou, Zheng Ke and Cheng Qunhan and I formed an activity group, with me as the team leader. The theme of the activity is: the study of ancient buildings.

Ancient architecture is a mysterious thing to me, and I am full of curiosity about it. After returning home, we decided to put the venue of this activity in Jiu Feng Park, and mainly studied the Ruilong Induction Tower and the ancient buildings in the south of the Yangtze River. Then, I contacted the team members and agreed on the time and place.

At noon on Sunday, our team members arrived at the bottom of Ruilong Induction Tower on time. I saw the tower standing high at the foot of the mountain. Through the introduction of the stone tablet, we know that Ruilong Induction Tower was built in the Kaibao period of the Northern Song Dynasty, with a height of 35 meters. 2 meters, it is a pavilion-style brick tower with eight sides and seven floors. The tower was damaged by thousands of years of wind and rain erosion, 199 1 reconstruction. The tower we see now is the tower after construction.

Then, we came to the ancient buildings in Jiangnan. Because the gate is closed, we can't go in and visit, but it looks beautiful from the outside. Li Chenou's father told us that the ancient buildings in Jiu Feng are typical Huizhou architectural styles, which were moved from Jiangxi by Huangyan entrepreneurs according to their prototypes and original objects.

This practical activity made me learn a lot of new knowledge after class, and also made me know something about Ruilong Induction Tower and ancient buildings. In the future, I will take part in such activities more.