Essay on expressing a truth with a thing 500 words

Observe the ants.

It is black all over the body and has six tiny feet, which is the shape of an ant.

One day, my biscuit accidentally fell to the ground, I had an idea: "You can use it to feed ants", so I took the biscuit to the outside, and found that there was an ant crawling around on the ground, so I put the biscuit down, when I put it down, the biscuit was broken into two pieces, and the ant immediately found out, it tried to move it first, but for it, the biscuit was really a behemoth, no way, it had to give up, and left in a hurry, after a while, I found that on the way back there were dozens of ants at once, they attacked the place where the biscuits were placed, everyone you dragged me to pull, lifted the biscuits and moved in the direction of the passage of a millimeter by millimeter, to reach their burrow, you must go through a "tunnel", that is not an easy task, the "tunnel" mouth is too small, although they are a lot of effort, or can not get in, but they are not discouraged, have been working together, none of the ants escaped, finally, by the biscuit into zero, They finally moved all the cookies into the cave. Watching them keep busy, I became more and more interested, and finally, I put together the dead mosquitoes, flies, and leftover biscuits, and found that more and more ants kept rushing to this pile of "food", and the ants on the food gathered more and more ......In the end, the food on the ground was carried by the ants at all, and even the cookie crumbs were difficult to see.

At the same time, I also discovered a secret, ants are not desperate to move things, they will find a way to change their strategy when they encounter difficulties, and in the process of moving, they are always united and persistent, no ant will be a deserter, and in the end they will be successful.

This is the ant — the cute little elf.

The other day, I bought a small goldfish and it's so cute. The little goldfish is silver-gray all over, with bulging eyes like small light bulbs, and the most endearing thing is that it also wears a flared skirt. As it swims, this "flared skirt" is like a lotus flower in full bloom, and I love it so much.

Every time I come home from school, the first thing I do is feed the baby goldfish. When I was about to sprinkle the food to it, it seemed to know that I was going to feed it, so it swam towards me, I sprinkled the fish food on the surface of the water little by little, and the little goldfish ate it bite by bite, and when it was full of food and drink, it swam freely in the water, at this time, a question mark suddenly flashed in my head, why can fish only live in water?

I really wanted to understand this question, so I asked my mother, who only told me that fish breathe by gills. Is it possible for a fish to live in the water by breathing by gills? I decided to go online after all.

Nowadays, technology is really advanced, and it didn't take long for me to find the answer. It turns out that the gills of fish are only adapted to absorb oxygen from the water, but not to the air, and the shape of the fish is more adapted to life in the water. The surface of its body is covered with scales to protect the body, and there is a layer of mucus on the surface of the scales, which reduces the resistance of the water when swimming, no wonder, every time you pick it up with your hands, you feel that it is slippery.

In addition, there is a line of lateral lines on both sides of its body, which are connected to the nerves, mainly to determine the direction and sense the flow of water. In addition to swimming "tools" such as pectoral fins, dorsal fins, pelvic fins, and caudal fins, fish also have swim bladders in its body, and by adjusting the air capacity in the swim bladder, they can float and sink freely in the water.

I finally figured out why fish can only live in the water, and at the same time satisfied my curiosity. Since then, I like my little goldfish even more! Every time I watch it swim freely, I fall into an endless reverie:

If one day a person has gills and a swim bladder in his body, he will be able to swim freely in the water like a small fish. What an amazing thing that would be!

People often say: "There is nothing difficult in the world, only afraid of those who have a heart". But there was one thing that I tried many times and didn't succeed, and I almost didn't believe it at the time, but my dad said it was right, so I had to say it!

It happened in the winter vacation of the fourth grade, this is the first day of the winter vacation at noon, I was looking through my school bag, found my art painting exam papers, I looked at the painting I painted, the painting was marked with a score of "70", I just recalled, the scene at that time, I held my painting, I was not happy at all, other people's scores were higher than mine, when others saw that my score was only "70", they were making fun of me, I was very angry, so I boasted that I would learn to draw well during the winter vacation, And you have to draw better than you", just at that time, the teacher heard it, and the teacher said, "Okay, when you come back from winter vacation, you can show me your painting to see if there is any progress."

As a result, during the winter vacation, I practiced painting every day, but the painting was not good-looking, and finally I threw the painting aside angrily, and my father picked up my painting and said to me, "Although you don't paint well, as long as you practice carefully and slowly draw every stroke, you can draw it well one day." After listening to my father's words, I took out another piece of paper and began to draw, but no matter how I painted, I couldn't draw well, and my heart began to rush again

Take your time and don't rush". Listening, I drew slowly, and this time I was no longer in a hurry, and I started drawing one stroke at a time, and this time I finally drew better. And then it got better and better each time.

From this incident, I learned a truth: no matter what you do, you must take the first step well, just like painting, slowly draw the first stroke, and then draw the second and third strokes, so that you can do nothing well. From this painting thing, I believe:

There is nothing difficult in the world, only afraid of those who have a heart.

Why the lighthouse is flickering.

The lighthouse is a tower erected on the river and the sea, and the bright light at the top of it directs the ships sailing at night, so that they can avoid the treacherous reef and shoal.

I don't know if you have found a very interesting problem, the lights of the lighthouse are not on all the time, but according to a certain rhythm, flashing and flashing. That's why, I've been thinking about it for a few years. I've consulted a lot of people, and their answers are basically "the lights flicker and they get people's attention".

I also think it makes sense. It wasn't until that time when we took a cruise to Hainan that I had a new idea.

At night, I stood on the deck, staring at the lighthouse in front of me, watching the lights flicker unhurriedly, and my father, who was standing next to me, suddenly said, "It turns out that the lights of the lighthouse are flashing according to the law of flashing every two seconds." "I was also curious to beat my hand to the frequency of the flash.

The boat was moving forward, and after a while, I saw another lighthouse. I'm hitting the beat like I did again, no, the frequency of the flash doesn't seem to keep up with my beat. I quickly called my dad for help, one looked at the light, the other looked at the watch, and found that the light was flashing every four seconds I was excited, waiting for the next lighthouse to appear.

Later, it turned out that the lights of the lighthouse were different from two seconds to four seconds, and seven seconds.

So, why is that? If the light is to get people's attention, you don't need to change the frequency of the flash? The new discovery got me thinking again.

In order to verify the doubts in my mind, I looked up the information on the Internet and also checked "100,000 Whys". After reading the information, I took it into account and came to two most likely conclusions: the first is to allow some ships that have lost their way to determine their location based on the frequency beam of the lighthouse's flashes For example, the Walf Lighthouse in the Isles of Silly has this purpose, which is a lighthouse that flashes at 15-second intervals, and according to the characteristics of its flash, voyagers, especially those who have lost their way, can find the lighthouse on the navigation chart.

The second is to let people know if there is an emergency. The data shows that the first point is more likely. Sometimes, when fog on the sea limits the light of the lighthouse, the lighthouse will sound an alarm to guide the incoming and outgoing vessels in lieu of lights.

This serendipitous discovery gave me a revelation: there are countless "whys" around us that lead us into new worlds. However, it takes us to have an eye for the "why".

I have experienced many things in my childhood, but the only thing that I will never forget, it has taught me a truth.

It was a test last Thursday, I was doing the test paper, doing it, I encountered a problem, I couldn't think about it, so I had to do other questions first, about half an hour, almost closed, according to the precedent, I checked from beginning to end, at this time, I found that there was still a question to do, I racked my brains and thought, the teacher said, "There are fifteen minutes left before the time to collect the paper." When I heard that, I panicked.

I thought: what to do, what to do, I haven't done this yet.

At this moment, I clearly heard the students in the back seat who had already submitted their papers discussing the answers. This makes me conflicted: to write, or not to write; write, but then I am dishonest; If you don't write it, this question is 10 points, and you can't let it slip away!

The moment I picked up the pen, I felt uneasy and my hands were shaking.

When the paper was finally closed, I made up my mind that I couldn't change it, and I wanted to be an honest person, so I handed in the paper, even though I only scored 90 points on this test. But I'm happy because it's my real result!

Through this incident, I learned the truth of being a man - no matter what we are in, honesty is the principle of being a man!

I had to take the bus to school. One day, I boarded the bus as usual, and there were a lot of passengers that day, and I finally got a seat. When I got to the first station, an old man came up and stood beside me.

I wanted to give way to her, but I thought, "Why don't you let me?" That's how I didn't let it. After a while, a girl stood up and gave way to the old man, who stood beside him, holding on to the handle of the chair with one hand, for her hand could not reach the handle.

It looked like it was hard to stand there.

The bus has arrived, it's time for me to get off. The girl also got out of the car with me. Just as I was about to leave, I accidentally saw the girl who had given way limping away.

Oh, so she's disabled, younger than me. Looking at her back as she faded away, my eyes blurred...

This incident made me understand a truth, whether it is an adult or a small person, whether it is a normal person or a disabled person, we must have love.