About 200 words about practical examples in civilized daily life (detailed)

About 200 words about practical examples of being civilized in daily life (be detailed)

These are examples of being uncivilized in daily life and you will be civilized in turn

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1. Quarreling and swearing in public places

2. Walking the dog without pulling on the leash

3. Crossing the road and crossing the guardrail

4 . Graffiti at tourist attractions

5. Waste of water and electricity in public places

6. Littering of peelings, paper scraps and other garbage

7. Picking up on inappropriate occasions Talking on the mobile phone

8. Smoking in places where smoking is not allowed

9. Not giving up your seat to the elderly, weak, sick and pregnant

10. Karaoke sound at home Too big

11. Disobeying traffic rules and running red lights

12. Excessively intimate behavior in public places. Ask about things in daily life, short essay, about 200 words< /p>

I got up on time this morning and prepared to go to school. When I went out, I found that I had forgotten my schoolbag and the door key was in it. Examples of environmental protection in daily life (about 30 words)

Collect disposable convenience bags and process them together, and recycle used batteries for centralized processing.

Recommendations made by the United Nations Environment Program include:

1. Use traditional wind-up alarm clocks instead of electronic clocks, which can reduce approximately 48 grams per day of carbon dioxide emissions.

2. Using traditional toothbrushes instead of electric toothbrushes can reduce carbon dioxide emissions by 48 grams per day.

3. Changing a 45-minute exercise on an electric treadmill to jogging in a nearby park can reduce carbon dioxide emissions by nearly 1,000 grams.

4. If you go to a place 8 kilometers away

, taking rail transit can reduce carbon dioxide emissions by 1,700 grams compared to taking a car.

5. Instead of spinning clothes in a washing machine, let them dry naturally, which can reduce carbon dioxide emissions by 2,300 grams.

6. Turn off computers and monitors during lunch breaks and after get off work. In addition to saving electricity, this can reduce the carbon dioxide emissions of these appliances by one-third.

7. Switching to a water-saving shower head can not only save water, but also reduce the carbon dioxide emissions caused by a three-minute hot shower by half.

1. Exercise more, watch less TV, surf the Internet less, gather more with family and friends, and go out for a walk more often. 2. Eat green food as much as possible, drink more water, less alcohol and carbonated drinks, and avoid high-fat, high-sugar and other junk food. 3. Use energy-saving lamps instead of incandescent lamps. The wattage (power) should be as low as possible and the lighting is sufficient. And the lower brightness of the room makes it more romantic and interesting. 4. When going out at close range, try to use non-motorized vehicles (walking or bicycles). 5. Do not litter and classify garbage. 6. Do not turn on the lights or use the air conditioner when there is no one around or when it is not necessary. 7. Open more windows for more ventilation, and turn off the lights easily. Turn off the faucet, gas stove, TV, air conditioner, and computer. 8. Prepare a large bucket at home for the water used to wash vegetables and fruits. It can be used to water flowers, flush toilets, and reuse domestic wastewater. 9. When cooking rice, you can soak the rice in water for a while before cooking it. You don’t need a pressure cooker to make mung bean soup. Soak the mung beans in boiling water in a thermos at night, and you can drink it deliciously in the morning. 10. It is best to turn off your mobile phone at night, one to save power and the other to help you rest, except for urgent matters of course. 11. Some wrapping paper and advertising paper are blank on the back and can be used for notes or scratch paper. 12. Use the refrigerator rationally and defrost it regularly. Computers, TVs, and stereos enter standby mode to save energy when people leave temporarily, and shut down directly when not in use. 13. Don’t blindly pursue high-end products when purchasing products. Good products are practical and cost-effective and avoid waste. 14. If possible, do not turn on the air conditioner. Use an electric fan or fan as much as possible. If you are good at washing clothes by hand, try not to use a washing machine. 15. Put a large Coke bottle filled with water in the toilet storage bucket to reduce the amount of water stored. . It is best to design two switches, one for flushing stool and the other for flushing urine.

16. Make full use of natural energy such as solar water heaters and wind power generation. Take the stairs as much as possible without taking the elevator, which can save energy and exercise.

I also want to take the test: Practical examples of applying proof by contradiction in daily life

Proof: The food in this restaurant is terrible.

Assuming it tastes good, then the business is very good on weekend nights, but there are actually no customers, which is a contradiction, so the assumption does not hold, so it tastes bad. Chinese slogans in daily life are about 10 words

There are many slogans in daily life, such as:

1. To get rich, build roads first

2. Prenatal and postnatal education Benefit the country and the family

3. Speeding is strictly prohibited

4. Actively join the army to defend the country

5. Everyone has a responsibility to clean the city

< p> 6. Dedicate yourself to preparing for the college entrance examination. Science in daily life for fifth grade primary school, about 200 words

Technology is the representative of the 21st century, and technology is everywhere in our lives. The 21st century is an era of technology. We cannot live without life, and life cannot live without technology. Therefore, technology is indispensable in our lives.

Bionics

Human beings are very smart animals with thousands of ideas. We want to become fish and swim in the sea; we want to become birds, Soaring in the sky; we want to become cheetahs and run freely on the endless grasslands... In order to realize their wishes, people imitate the habits, structures, and life characteristics of animals, and use this knowledge flexibly It is used in house construction, military, etc. This is the famous bionics.

Thin-shell structure

The familiar Great Hall of the People was built based on the principles of bionics. The designers who designed the Great Hall of the People used the thin-shell structure of eggs. As we all know, when we peel an egg, we will not crush it easily. If we only exert our strength, we will be very tired; so we take a corner of the egg and knock it on a sharp place to crack the egg open. This is The egg's energy-dispersing structure was used to build the Great Hall of the People.

Hybrid animals

On the earth we live on, there are hundreds of animals, some soaring in the sky, some swimming in the ocean, and some Running on the grassland. Each animal has its own way of living and behavioral habits. Each animal is an individual and they look different. In modern times, relevant scientists put two animals together and mate, and a new species will be produced. For example, the more common hybrid species now are ligers or tigons. Ligers refer to the cubs born from the mating of a lion as a male and a tiger as a female, called a liger; and a tigon, It means that the tiger is the male and the lion is the female, and the cubs born from the mating are called tigons. Now in the Yunnan Wildlife Park near the Golden Palace in Kunming, Yunnan, a male sheep and a female sika deer fall in love. From this point of view, will there be one more species among our species in the world? Let's wait and see.

Cloning Technology

In the mythical story Journey to the West, the powerful Sun Wukong transformed himself into several clones by blowing his hair. After all, mythical stories are mythical stories and should not be taken seriously. , However, in the 21st century with the development of science and technology, this phenomenon can happen. Dolly, the world's first cloned sheep, do you know how he was born? He was born in the UK in 1996 to a ewe rather than his actual mother. It turns out that he did not develop from a fertilized egg. Not one, but three ewes are associated with its identity. The process is as follows: scientists first extract the nucleus from the egg cell of sheep A, then remove the nucleus of the mammary gland cell of sheep B, and inject it into the anucleate egg cell from sheep A, thus obtaining an egg cell with the nucleus of sheep B. This egg cell divides to form a tiny embryo. This embryo was then moved into the uterus of sheep C and allowed to continue to develop. After a while, a lively and cute lamb was born. This is Dolly. Although little Dolly was born from C sheep, she looks nothing like C sheep, but almost exactly like B sheep.

Our lives are inseparable from technology, and technology is closely related to our lives.

Technology is the greatest wealth in our world. Technology makes us progress and allows us to live better in this world. Technology is widely used in house construction and aerospace industry. The 21st century is an era of technology, and technology is everywhere. Examples of vaporization in daily life

Vaporization in daily life is usually evaporation: drying clothes, drying rivers, and drying hair.

The white gas you can see when the water is boiling is liquefaction. Examples of noise in daily life

Sources of noise

There are three main sources of noise, which are traffic noise, industrial noise and domestic noise.

Traffic Noise

Traffic noise is mainly emitted by vehicles during operation. Cars, airplanes, trains, etc. are all sources of traffic noise. Surveys show that motor vehicle noise accounts for 85% of urban traffic noise. The spread of vehicle noise is closely related to the number of roads and traffic volume. In a city with narrow roads and high-rise buildings on both sides, noise reflects back and forth, making it seem even noisier. The same noise source sounds 5-10 decibels louder in the open space on the street. Among motor vehicles, the noise of heavy vehicles such as trucks and buses is 89-92 decibels, while the noise of light vehicles such as cars and jeeps is about 82-85 decibels. The above sound levels are measured 7.5 meters away from the vehicle. . There is also a great relationship between car speed and noise level. The faster the car speed, the louder the noise. If the car speed is doubled, the noise will increase by 6-10 decibels.

Car noise mainly comes from car exhaust noise. Without a muffler, the noise can reach over 100 decibels. Followed by engine noise and tire noise. Engine noise can reach more than 90 decibels when the car is running normally, while tire noise can reach about 95 decibels when the vehicle speed is more than 90 kilometers per hour. Therefore, adding a muffler to the exhaust system can reduce car exhaust noise by 20-30 decibels. In terms of engines, replacing diesel engines with gasoline engines can reduce engine noise by 6-8 decibels.

In addition, railway passenger and freight stations close to the city center have a greater impact because trains have to pass through the city. Especially when the passenger flow is large, its impact cannot be ignored. Sources of noise from underground railways are similar to those from trains. Because vehicles drive in tunnels, noise is not easily dissipated and causes greater disturbance to people in the carriages. According to actual measurements in the UK, the noise in the car is as high as 102 decibels when the windows are opened.

Although the noise from water and land transportation has a wide range of impacts, in terms of directly causing significant harm, it is still the noise from air transportation. In the era of internal combustion engines, air transport noise was not prominent. But after the advent of jets, air transport noise gradually had a greater impact. On the one hand, this is due to the high noise level of jets, and on the other hand, it is also the result of increasingly busy air transport. In fact, the airport not only produces noise when aircraft take off and land, but also produces strong noise during airport ground maintenance and aircraft test operations, which has a great impact on nearby residents. When a large jet takes off, language communications within 1 kilometer on both sides of the runway are disrupted, and people within 4 kilometers cannot rest or sleep.

Industrial Noise

Industrial noise mainly comes from the sound generated by mechanical vibration, friction, impact and air flow disturbance during production and various working processes. Although the impact of noise and vibration caused by the production operations of various factories in the city and municipal and construction construction is not as widespread as that of transportation, the pollution in regional areas is much more serious than that of transportation. Therefore, the impact of these noise vibrations on the surrounding environment should also be taken seriously.

Living noise

Living noise mainly refers to the sounds produced by various living facilities and crowd activities in streets and buildings. For example, in the living room, children cry, radios, TVs and audio devices are played loudly; people are noisy outdoors or on the streets, and loudspeakers are used for publicity or advertising. These noises can be divided into two categories: indoor noise and public place noise. They are generally below 80 decibels and have no direct physiological harm to people, but they can interfere with people's conversation, work, study and rest. Give two examples to illustrate scientific knowledge in daily life

1. When a straw absorbs water, the atmospheric pressure is strong.

2. The light bulb emits light, photoelectric effect.

3. Motor rotation, electromagnetic induction.

4. Camera, projector, convex lens imaging.