Experience of writing a composition about going to the science a

1. It's all the same there. The question is whether you need to learn from your heart or not

2. Today is my birthday. My grandmother bought me a big cake. My mother made many delicious dishes for me. All my relatives and friends came

when it's time for dinner, I'll ask you to take your seats. Today's food is really rich, and it's all our favorite. After dinner, my mother said: "Rongrong, I'll discuss with you to have a" gift party "after dinner. You have to guess what gift to give you first Mother took out a beautifully wrapped gift, I thought for a while, happily said: "it's the outlaws of the marsh!" Mother laughed, and then everyone took out their gifts, I guess more correctly

when it's time to eat the cake, we spread the cream on my face, and I didn't show any weakness. My mother said loudly, "don't just play and forget to eat!" Everybody just stopped. Eating the sweet cake, I pondered: how many famous mountains and rivers did mom and dad accompany our sister and brother, and how many spring and autumn did they accompany us...

ah! I'm so happy today!

3. On Sunday, I visited Zhengzhou science and Technology Museum. From the outside, the north side of the science and Technology Museum is a cone, and the south side is like a square bread. Walk into the science and Technology Museum. There are three floors in it. The first and second floors mainly introce and demonstrate some scientific phenomena, such as electrostatic generator, robot that can play piano, earthquake demonstrator, sound room, etc. Through these demonstrations and introctions, we can easily know the causes of some phenomena. We can not only watch, but also operate and experience by ourselves. I got on the earthquake demonstrator with other children. It was shaking so much that the pen and paper in my hand were shaking off. Now I finally know the power of earthquake
on the third floor of the science and Technology Museum, there are some models of our country's "Long March" series rockets, as well as some activities for children to make by themselves
when we went, in the hall on the first floor of the science and Technology Museum, we were exhibiting some small inventions and creations made by our primary school students. For example, safety folding sickle, tool for changing light bulb, homemade small dressing room, etc. These are all small inventions and small proctions that have won the second prize or above. What impressed me most was the tool for changing the light bulb. It's a mop. There's a clip on the top and on the right. When changing a light bulb, aim it at the light bulb, and then screw a round thing to screw the light bulb off. In this way, people don't have to stand on a stool or a ladder. It's really convenient. These students invented these useful things at a young age, and they will be excellent inventors in the future. I also want to learn from them
ring this visit to the science and Technology Museum, I learned a lot and gained a lot.

4. How to write and demonstrate after reading_ The first paragraph summarizes some of the main contents of the book, what the author has written and what he wants to express In the second paragraph, choose one of the more important points, or some places that you think are important, and express it,... Third, after reading, you should start with the brief introction of the work you read, and then write your experience

5. Nowadays, our living conditions are getting better and better, and science and technology are becoming more and more common in our lives, such as mobile phones, electric lights, thermos cups, water dispensers, etc
nowadays, science and technology are more and more developed, and have entered into thousands of households, making our life more colorful and convenient than before! For example, in the past, people used to walk on dirt roads, most of them walked on two legs, and a few rich people only took carriages; And now the main road is asphalt road, people from bicycles to motorcycles, from electric cars to cars, trains, suspension trains, not only fast, but also very comfortable

in the past, clothes were not good-looking. Even the emperor's Dragon Robe had only two or three colors. Now, as long as an ordinary dress has many colors and styles, including jacket, T-shirt, down jacket, skirt, jeans and so on. In the past, I used to eat coarse grain and sleep on wooden beds. Now I eat fine grain and have all kinds of snacks. I sleep on soft mattresses, which are not only comfortable but also elastic

in the past, when someone got sick, they had to prescribe a prescription so that their family could get the medicine. Sometimes they were misdiagnosed or had no effect, and most of them could not treat the disease fundamentally. Now with western medicine, there are not only many medicines, but also many health care procts. In the past, the patient's body grew harmful substances, which could not be seen like gallstones. That is to say, the use of Ma Fei San made the patient still have a great risk ring the operation; Now the X-ray machine can be used to examine the disease. There are professional anesthetics and highly skilled doctors ring treatment or resection, and even minimally invasive surgery has been invented. Patients feel little pain and have high safety

high technology has come into our life, it brings us convenience and happiness! I hope that high technology can be more developed, keep improving, to a higher level, and bring more happiness to people Excerpt from full score composition net)

6. There are many wonderful things in the scientific world, such as observing the weather, collecting specimens, scientific experiments, popular science activities, life discovery, etc. all are one kind of exploring science. Human beings progress because of science, and science innovates because of human beings. Human beings can't do without science, and science can't do without human beings.
on Sunday morning, it was sunny and cloudless, Because my parents were not at home, I decided to go out and play with my "partners" after I finished my homework.
when I came to the airing room, I pulled down my clothes and played a "slam nk"! I saw the clothes fall into the basin from the other side of the clothes rack and get wet. What can I do? How can I go out to play when my clothes are wet! What's more, the "old" mother will be nagging after she knows it. Let's just wash the clothes! In this way, I can't even get praise from my mother
as soon as I say it's dry, I take the washing basin to the water room, turn on the water spitting ckling (faucet) and take some more water. I soaked the clothes in the basin, put on the laundry soap, and then wash them up and down. At this time, a 1 yuan coin fell out of my pocket and fell into the basin. I quickly reached for it, but I found that the coin was floating on the water! How can a coin float on the water? After observing for a while, I saw that the coin was still floating on the water. I thought it would be better if I could do the same in the clear water, because I didn't have to worry about the coin falling into the water and couldn't find it! What's the matter? I changed a basin of soap water with laundry, tried it again, and the coin floated. Is that why
with questions, I searched the Internet, but I didn't find the answer, I searched through the books I had learned, and I didn't find the answer.
Where can I find the answer? As soon as I patted my forehead, I went to Xinhua Bookstore to find my "secret book" 100000 whys. When I came to Xinhua Bookstore, I found the answer. It turns out that this phenomenon is the result of the "tension" effect of water, the tension of water = water + influence substance, which is something like laundry soap. The secret of coin not sinking to the bottom has been revealed.
on the way home, As I walk, I think: science is too wonderful, science is too interesting... I like the wonderful and interesting things here, but I also know that there are many interesting fans waiting for us to explore by relying on our knowledge. Therefore, I am determined to make full use of every day now, study hard, and use more knowledge to understand the secrets of science, so as to win glory for China and add color to China
an inadvertent experiment made me understand the magic of science and experience the joy of understanding and opening the magic of science!

7. Return the blue sky to me. Ancient poets wrote about the sky, "the river and the sky are the same color without st"; Modern writers wrote about the sky, "the blue sky, spotless, crystal clear and transparent.". Unfortunately, we seldom see such a beautiful "sky" now. Especially in cities or instrial areas, the smog and haze all day long is really unpleasant. In the face of all this, you can't help sighing: "fresh, fresh and clean atmosphere, where have you been? Give the atmosphere cure "disease" quickly, return me blue sky and red sun! We do have a lot to do, the most important thing is to try to rece the emissions of pollutants. Soot is mainly proced by the continuous combustion of coal and oil. If the combustion method is improved and the fuel is fully burned, the amount of soot can be greatly reced. Try not to burn loose coal, develop coal gasification and liquefaction, and wash and process the fuel containing a lot of ash and sulfur. The generated pollutants should be recovered and processed by means of absorption, catalysis, adsorption and condensation, so as to turn harm into benefit and reuse. Even the pollutants that run into the atmosphere should try to rece their harm. We should strengthen urban greening, plant more flowers and trees, and open up more parks and boulevards. From the perspective of curbing global warming, natural gas should be used as fuel to control the growth of greenhouse gases, especially carbon dioxide. If the small chimneys of each household can be canceled, the central heating or the combined proction of power supply and heating can be implemented, the fuel can be saved and the carbon dioxide emission can be reced. If the amount of secondary utilization of aluminum in the world is doubled on the existing basis, the amount of pollutants discharged into the atmosphere can be reced by 1 million tons a year. There are more than 400 million vehicles in the world, which emit about 1.83 billion tons of carbon dioxide every year. In order to rece the greenhouse gas emissions of vehicles, in addition to limiting the number of vehicles, saving fuel consumption and installing purification devices, clean fuels such as methanol and ethanol should be used to develop public transport and electric vehicles. Finally, the development and utilization of clean new energy is the most fundamental way to rece air pollution. For example, nuclear energy, solar energy, wind energy, biomass energy and geothermal energy are clean, rich in reserves and promising. The destruction of the ozone layer is a global problem. The United Nations Conference on the environment has decided to phase out the proction of chlorofluorocarbons (CFCs), the "culprit" of ozone layer destruction, by the end of 1995. However, the life span of CFCs is 50-100 years, and 15 million tons of CFCS have been lost into the atmosphere. Up to now, only a small part of CFCS have destroyed the ozone layer, and most of the rest are still in action. The ozone layer will continue to be destroyed and reach its peak in the first 10 years of the next century. It will take at least a century to return to the normal natural level! Air pollution is caused by human activities, and it has to be solved by human beings themselves. It's just that time doesn't wait for us. We'd better take resolute actions from now on, take measures to purify the atmosphere and return my blue sky!

8. I won't buy it here next time. I swear in my heart. Then he chose a few, paid the money, and ran away without daring to look back
as soon as I came out and saw that it was late and the wind was strong, I quickened my pace. Suddenly, not far from the community, I saw an old woman fall down, and there was no one nearby, so I ran away
when I got to grandma's, I tried my best to help her up. The old woman touched my head with her rough hand and said, "thank you, little child. You are such a good child." I said, "you're welcome, granny. Tell me how you fell."“ Just now, I stepped on a banana peel“ Oh, you should be more careful in the future! It's getting late. Go back quickly. "
the so-called "care for others and be happy with yourself" ah! I finally feel it myself today. Looking at my grandmother's back, I had already thrown the disgrace to the horizon. Although I walk on the road of lacquer black road alone, I feel warm and bright everywhere.

9. Methods to wipe