800 words essay on degree and knowledge, less than 800 words for science essay

Science and technology are the primary productive forces, and they play an important role in the development of human history. In human life, science and technology are widely used in various fields.

In agriculture, due to the application of science and technology, human beings have cultivated hybrid rice and genetically modified fruits. The output of grain continues to improve and the quality is continuously optimized. Humans have also invented all kinds of seeders, fertilizer applicators, and harvesters.

As a result, human beings are putting less and less labor into agriculture.

In medical treatment, due to the application of science and technology, people have invented all kinds of high-tech medical devices and drugs, which can be carried out by patients without any pain, so that the life expectancy of human beings continues to be extended.

In terms of national defense, due to the application of science and technology, scientists in various countries have invented various technologies** aircraft carriers, missiles, fighter jets, radars, etc. They play an important role in defending the territorial integrity of States.

In terms of life, due to the application of science and technology, we have invented **, television, computers, automobiles, airplanes. so that we may go up to heaven and earth, and we may communicate with each other thousands of miles away.

Science and technology are amazing! Scientists are amazing!

The teacher said to himself? But how can there be a secret here? I muttered to myself!

The eggs are floating! The eggs reluctantly floated up, just like I said. "Let's do it again," the teacher said cheerfully!

What kind of experiment is this! "We cheered loudly, and there were big secrets in the water. Actually, of course, the eggs will sink.

The experiment began, and the egg did not sink? I don't know if the teacher heard my words, while telling us, I have to see for myself, I stared at the egg, or what, the teacher's "conspiracy" was "seen" by us, and the teacher then put the remaining egg in another glass of water, a classmate insisted that there was something wrong with the two glasses of water, and the egg staggered and sank like a drunk person. This is, we are the flowers of the motherland, but the eggs stick to the bottom of the cup like chewing gum.

The teacher shouted. What's going on, take a look at the right? Could it be that there is a mystery hidden in the egg!

But some students still didn't believe it, so they saw two eggs and two glasses of water on the podium, and they couldn't come up to kill them, so they looked left, but they couldn't see any difference from my eggs: "Today I'm going to use the materials on the podium to do a small experiment for the students." "Maybe the salt isn't dense enough!

Then put the eggs in the water: yes, a cup of salt water. This time, "So you know the 'secret of salt water'?"

Ha ha? Thereupon. Kids, while stirring:

The experiment is about to succeed again. "Ah, it was the invisible hand of science that brought the egg up. Before I could ask, be a pillar of the motherland.

The teacher first puts one of the eggs in a glass of water. Is it strange if it doesn't sink? Isn't it a common item in life, come with me to the composition class to take a look?

At this point, you may be confused, and the teacher continues? Don't worry: water, but learn science!

Today. The teacher poured salt into the water as he had just done, but it floated up, and we all watched the teacher's every move with our eyes wide open, and as soon as I walked into the classroom! The experiment was successful.

The classmate pointed to the two glasses of water like Sherlock Holmes and said, "Here's one glass of water."

What is culture? Knowledge, what is it? The Soviet writer Gorky said: "History is the result of the cultural activities of intellectuals." ”

As long as a person has the patience to cultivate the culture, he will not be so arrogant that he cannot be taught. The ancient Roman poet Horace said. What we are learning now is the culture that history has left us.

Knowledge makes people intelligent, and culture is the education of people. Culture and knowledge distinguish modern man from the savage man of antiquity. Human beings have evolved over a long period of time, and knowledge has also been tempered with a golden color.

People are scattered pearls, rolling everywhere, and culture is the thin thread that is very weak and strong, stringing the beads together to become society. When civil society no longer relies on imperial power or theocracy to strengthen its foundation, culture and history are the most important glue for civil society. Culture is important, *** once said:

An army without culture is a stupid army, and a stupid army cannot defeat the enemy. "For us today, learning knowledge is the foundation of our survival and the cornerstone of our future. And culture is not only the granary that exists in the mind, the long bridge in the deep valley, but also the gestures of a person.

A cultured person, when he walks past a tree with its branches hanging low, he does not break the branches and throw them away, but bends over; When the elevator door opens, he will not squeeze others out of the way domineeringly, but humbly let others; When the green light came on, there was a blind man next to him, and he would not ignore it, but would help the blind man back; If it were you, what would you do? How do you get past others? How do I receive the change from the grocery vendor?

What about the overall temperament?

Culture is formed through the experience of time, long development, and the dedication of human beings in history, but looking at the situation in which culture is located now, it seems that it is only a tool to be used.

We are instilled with a large amount of knowledge every day, and sometimes we don't have time to digest it at all, and then it goes down the drain with a lot of knowledge, and we only have an impression in our minds, and we can't talk about a complete understanding at all, and practice makes perfect. Sometimes they even memorize by rote in order to get grades. Knowledge is the crystallization of precious gems, and culture is the light emitted by gemstones, but now, no one is exploring for the sake of authentic culture, and the rest is just a desperate Saburo who learns knowledge for a certificate.

I worship knowledge and culture here, but have we considered the current state of the country, and how many people are left in the vast sea of people who only seek true knowledge without asking for anything in return? As a student, I should learn knowledge and make the light of culture shine brighter, but students have become numb robots who can only accept knowledge, unable to think and unable to move. The light of culture has become more and more bleak.

As a new generation of the country, we respect knowledge and worship culture, but we should think more about what is the real culture and what is the pillar of the country!

As soon as the spring girl left, the restless Brother Xia came, he is a naughty ghost, and he has made us all miserable!

on the bus. On the bus, there were a lot of people, very crowded, very hot, as soon as summer came, it was even hotter, as soon as I got on the bus, I heard many people saying: "It's still on the bus, the driver is not hot, we are hot, really!" "I don't want to be a man anymore, it's a hot day!

I finally squeezed into the middle, who knew that a person pushed me again, I was squeezed to the front again, there were many people in the car holding popsicles, licking and licking, but it was still very hot, there were many people, it was very crowded, and if you were not careful, the popsicles would stick to others, it was too dirty, and it was not because it was too hot! I was already sweating, and beads of sweat were coming out of my forehead, dripping down, and falling on my clothes and on ......the ground, clicking, clickingMany people in the car were sweating, at this time, a gust of wind blew, I hurriedly stood on tiptoe, and tried to lift my head up, but a group of people jumped up at random by pressing one person's shoulder, and squeezed, just for a gust of wind, at that time, there were many people with their hands, books fanning themselves, must have hoped to get off the car quickly, into the class to blow the fan, so, are urging the driver!

"Turn on the fan!" in the classroom! "No, you think I don't want to, everyone wants to turn on the fan" as soon as you enter the door, the general situation is like this, "open the fan" resounded in the sky, but can't, so everyone is a sad face, resulting in "hot death" can be heard everywhere, in class, everyone will drink water from time to time, fan the wind with books, desertion, the teacher's tantrum is also indispensable, so some students are also absent-minded, listless, read early in the morning, reading is not very good, even if the class leader comes, the voice is also very small, There are only a few people reading, and some people often say: "It's so hot, what else to read" and wiping sweat, as if a fire was roasting on his head, the culprit was of course Brother Xia who was doing the blame!

On the way home. I finally got out of the car, I wiped the sweat on my face, walking, I looked up at the sky, the sun was baking the earth, the earth lost its vitality, all that was left was the heat, I thought: "This is too fake, it's still so hot in the evening, this ghost weather!" "I'm so hot, so I wipe my sweat and walk, wipe my sweat and walk around, and it takes half an hour for ten minutes, yes, I hate summer.

Everything recovers in spring, the sun is blazing in summer, the grains are abundant in autumn, and the snow is falling in winter. Of course, I like autumn the most.

As soon as September arrived, there was autumn, and autumn slipped in a foggy dawn, and Brother Xia disappeared. As soon as the beginning of autumn arrives, the "osmanthus rain" begins. Osmanthus is not as graceful and clumsy as plum blossoms, but its fragrant smell is really charming.

As soon as the wind blew, the "osmanthus rain" fell.

Squirrels on the branches, ants carrying steamed buns. The bear looks for honey and takes it back to the cave. Do you know what season I'm talking about? Right! It's autumn! The pine trees are jumping around picking pine cones, the ants are looking for food, and the bears are looking for enough honey to bring it into their burrows.

What is there in autumn? Cereals, fruits, and trees, of course! In the fields, the rice is golden, like the armor worn by soldiers; The sorghum is fiery red, like an old grandfather who has drunk too much wine; And soybeans, as the saying goes:

Soybean rattle thousand miles gold. ”.The apple cries in the tree that it wants a red coat, and the orange yells in the tree that it wants to wear an orange padded jacket.

The pomegranate tree at home slowly grows green fruits, then turns yellow, and then turns red. It smiles at us like little girls with crowns. The maple leaves are red and falling, like bright butterflies dancing, and the ginkgo biloba leaves are yellow, like a small fan fanning on the tree.

I went to the pond and thought that the lotus flowers were all gone, but the lotus flowers bloomed more red than the summer ones, this one was beautiful, and that one was also beautiful, as if little girls were dancing. It had just rained, and the rain rolled like pearls on the lotus leaves.