Encyclopedia 200

1.200 words of popular science knowledge

It's embarrassing to say, the teacher asked me to cram for the Buddha's feet temporarily in this popular science competition, and I won't get any prizes by temporary memory.

In fact, my interest in and accumulation of popular science knowledge have long been stranded in the middle and lower grades of primary schools. At that time, people were really fascinated by science. English words are not easy to remember, but the contents of popular science are easy to remember. According to grandma, "other children are studying hard, but our children are studying hard", which is very fanatical.

Now, books are too lazy to read, and 90% of the new books in the bookcase have been "punished" one by one. I raised a little interest a few days ago, but now it's all gone. I read some books sporadically, but I don't remember them as well as before.

There are two reasons for my pursuit: first, I am too lazy and my interests change rapidly; Second, the current popular science books are the tip of the iceberg with exquisite packaging, and there is no system. It's best for me not to read them.

Over the past few years, my personal way of thinking has changed a lot, so my interest has also shifted. It is also a test of Bobby Diport's thinking type. The results of previous years show that "concrete randomness" and "abstract randomness" are mostly, which belong to jumping and creative thinking. Now, the result is that "concrete order" and "abstract order" each account for half of the country, completely upside down. Of course, the latter is more organized, which is more beneficial to an academic school like me who likes reading and studying.

But I always can't find a book that suits me, so I don't accumulate much knowledge. After all, the standard of books nowadays is not high.

In my opinion, the most important thing of popular science books is not to repeat, not to be vague, to be systematic, to be easy to learn and easy to find. For example, what is the difference between an encyclopedia and an encyclopedia in the same series of books? It's just a scam made by booksellers under the guise of teenage books.

Poor content is a big defect, and poor binding is another big problem. It's either too extravagant or too shabby. Luxury goods can be boxes printed on coated paper, like health care products, opened with foam boards with a small book in the middle. Poor people can take off their lines and pages and misplace their typesetting, but they are still genuine rather than pirated.

Therefore, I have long lost interest in reading, because there are no books for middle school students to read, and the exam-oriented education model is all counseling books.

In my opinion, people in China are too eager for quick success and instant benefit, don't learn knowledge, especially popular science knowledge, and lack bookishness. This is bound to be played by booksellers. I only hope to have a better social learning atmosphere and rekindle my interest in popular science knowledge.

2. The encyclopedia of common sense of life is 200 words

1. Use toothpaste skillfully: If there is a small area of skin injury or burns, applying a little toothpaste can stop bleeding and relieve pain immediately and prevent infection, and the curative effect is quite good.

2. Skillfully remove the greasy screen window: You can put the washing powder and cigarette butts left over from smoking together in the water, and use them to clean the glass window and screen window after dissolution, which has a good effect.

3. Put the shrimp in a bowl, add a little salt and edible alkali powder, rub it with your hands for a while, then soak it in clear water, and then wash it with clear water. This will make the fried shrimps transparent as crystal, refreshing and delicious.

4. There is also the unique skill of jiaozi noodles: 6 egg whites are mixed into 1 kg flour to increase the protein in noodles. Protein will solidify and shrink quickly after jiaozi takes the pot, and jiaozi will collect water quickly after taking the pot, which is not easy to stick.

5. After soaking tea in water for a few days, pouring it on the roots of plants can promote the growth of plants; Residual tea leaves can be dried in the sun and smoked in toilets or ditches, which can eliminate the stench and drive away mosquitoes and flies.

6, uncooked rice re-cooking method: If the rice is raw, you can use chopsticks to tie some holes in the rice that go straight to the bottom of the pot, sprinkle a little yellow wine and simmer again. If it's just unfamiliar, turn the noodles to the middle and simmer.

If you have to cook vegetables, you'd better make full use of boiled water. When cooking jiaozi, you can put a proper amount of boiling water in the meat stuffing, which not only retains the nutrition, but also makes the dumpling stuffing delicious and the soup delicious.

8, the trick of scrambled eggs: beat the eggs in a bowl, add a little warm water and stir well, pour into the oil pan and fry, drop a little wine into the pot when frying, so that the scrambled eggs are fluffy, tender and delicious.

9. How to use the casserole 1: When the newly bought casserole is used for the first time, it is best to cook porridge, or use it to cook concentrated rice washing water to block the tiny pores of the casserole to prevent water seepage.

10, skillfully using "Thirteen Fragrances": use dried tangerine peel when stewing meat, which is rich in flavor; Eating beef and mutton with angelica dahurica can remove fishy smell and increase freshness; Cinnamon for homemade sausage is delicious; Bacon smoked chicken with cloves has an endless aftertaste.

Tip 2 of 1 1, and jiaozi noodles: stir the noodles a little harder, put them in a pot and seal them tightly, and simmer for 10- 15 minutes until the gluten in the noodles absorbs water and swells, and then wrap the jiaozi.

12, coriander is an Umbelliferae plant, which is rich in essential oil and has a strong aroma. However, essential oils are volatile and cannot stand long-term heating. It is best to add coriander before eating to keep its aroma.

13. Do not touch the door glass when performing high-temperature washing or clothes drying procedures to avoid burns. When taking out the dried clothes, be careful of the metal parts on the clothes, such as zippers and buttons, to avoid burns.

14. If the collar and cuffs are dirty, you can soak the clothes in warm water with washing powder 15-20 minutes, and then wash them normally, so that they can be washed clean.

15, the use of casserole method 2: When using casserole to make soup and stew meat, you should first add water to the casserole, and then put the casserole on the fire, first with slow fire, then with strong fire.

16, when cooking, add some starchy starch to make the soup thick, which not only makes the cooked food delicious, but also protects the vitamins because the starch contains glutathione.

17. If the rice is burnt, turn off the fire quickly, put a skin on the rice and cover the pot. After 5 minutes, the skin can absorb the burnt smell.

18, the amount of washing powder: If the clothes are not too dirty or there is too much foam when washing, the amount of washing powder should be reduced. Avoid excessive use of washing powder, which not only saves money and is environmentally friendly, but also makes the washing machine more durable.

19, when cooking jiaozi, add enough water, add 2% salt after boiling, and then add it to jiaozi after dissolving, which can increase the toughness of gluten. Jiaozi won't stick to the skin and the bottom, and jiaozi will turn white and smell delicious.

20. Many people like vegetables but don't like vegetable soup. In fact, when cooking, most vitamins have been dissolved in vegetable soup. For example, after Chinese cabbage is fried, 70% of vitamin C will be dissolved in vegetable soup.

3. Little knowledge of geography, less than 200 words.

The relationship between travel and geography People's travel is closely related to geography. As the saying goes, before going out to see the weather, going on a business trip or traveling, we should know the weather forecast released by CCTV, which depends on people's ability to recognize weather symbols, be familiar with weather systems such as cold front, warm front, high pressure, low pressure, cyclone, anticyclone and frontal cyclone, and reasonably choose travel time, transportation mode, tourist route and the number of items carried with them, so as to be both economical and minimal. If it is successfully completed, it will achieve the ideal effect of enjoying the most landscapes along the way. For example, when traveling, according to the regional characteristics, choose the transportation mode reasonably: drifting in the mountains and valleys; In the boundless and endless sand sea, we should choose the "boat of the desert"-camel; Choose a fine horse on the grassland where the wind blows and the grass blows low and cattle are raised, and it is as smooth as flying; In the Jiangnan water town in the south of China, choose boats to shuttle between rivers.

4.200 words of popular science knowledge

Our water polo

Some people say that our earth should be called water polo. This makes sense, because the planet we live in has water, and 7 1% of its surface area is occupied by water. In the eyes of astronauts, the earth is a blue ball, which is very splendid and unique in the solar system family. The earth's water resources are huge, totaling 65.438+38.6 million cubic kilometers. Among them, 96.5% are in the ocean; 1.76% is solid in glacier, frozen soil and snow; 1.7% is underground; The rest are scattered in lakes, rivers, atmosphere and organisms. So it can be said that from the sky to the underground, from the land to the ocean, there is a world of water everywhere.

Earth-shattering water cycle, the world's water is a connected whole. Under the irradiation of sunlight, seawater is constantly evaporating and water vapor diffuses over the ocean; Part of the water vapor is carried to the land by the airflow. When it is cold, it condenses into tiny water droplets and becomes clouds. When it falls to the ground, it is rain or snow. After the rain, snow and water fall to the ground, some of them flow into potholes, some seep into the ground, some flow into gullies, merge into rivers and rush to the ocean. Countless water drops travel around the world all the time. The water cycle ensures the supply of fresh water for human beings. Knowing the circulation of water can explain: where is the hometown of clouds? Why do rivers always flow day and night? Why have so many rivers and rivers flowed into the ocean for thousands of years, but the ocean has not flooded?

Where can fresh water enter the water on the earth? Although the number is huge, it is pitiful that people can directly use it for production and life. First of all, seawater is salty and bitter, so it can't be drunk, irrigated or used for industry. Secondly, fresh water only accounts for about 2.6% of the total water, and most of it (99%) is frozen in the north-south layer far away from human beings and frozen soil, so it can't be used. Less than 65,438+0% of fresh water is scattered in lakes, rivers and underground. Compared with all the water bodies in the world, the quantity of fresh water is actually nine Niu Yi hairs.

5. China Children's Knowledge Encyclopedia has read no less than 200 words.

Reading children's encyclopedia has 600 words.

I read a children's encyclopedia in the summer vacation.

The Children's Encyclopedia is a book aimed at children's reading habits and cognitive rules, most of which are about science and technology. I learned a lot in this book.

This book is divided into several parts: Huaxia science and technology, physical Vientiane, chemical world, biological world, transportation, weapons exhibition, and scientific and technological prospect. Moreover, the contents are also rich and colorful, including the first two astronomical works: Astronomical Astrology and Astronomy; Radio waves lurking around us-infrasound waves; /kloc-the great discovery of the 0/9th century-cell theory; There are also labor-saving key lever principles and so on.

But in this book, I am most interested in one of the four great inventions in China: papermaking. The invention of papermaking is one of the most outstanding contributions of the Chinese nation to world civilization. About 3,500 years ago, in Shang Dynasty, China had written characters carved on tortoise shells and animal bones. During the Spring and Autumn Period and the Warring States Period, bamboo and wood chips were used instead of tortoise shells and animal bones to become bamboo slips and wooden slips. Oracle Bone Inscriptions and bamboo slips are both very heavy, so when Hui Shi went out to give lectures during the Warring States period, he took five cars with him, so the idiom "learning to be rich and having five cars" came into being. In A.D. 105, Cai Lun, an official of Luoyang Palace, the capital, was very clever and used his head. It is inconvenient for the emperor to read a mountain of bamboo slips every day. He thought about making a light and easy-to-use writing material to replace the heavy bamboo slips.

For new materials, Cai Lun's first requirement is lightness and thinness, and silk meets the requirements. Unfortunately, materials were scarce, so Cai Lun carefully observed the production process of silk and silk, hoping to find similar materials. After careful searching, he found that bark, rags and old fishing nets were cut and soaked in water. After a period of time, the impurities in it rotted, and the fiber was not easy to rot, so it stayed. He asked the craftsmen to pick up the soaked raw materials, put them in a stone mortar, and kept stirring them until they became slurry, then picked up the sticky things with bamboo sticks, dried them and turned them into paper.

This is the origin of papermaking.

China's culture is extensive and profound, so we should read more such books to better understand our motherland.

6. Ask for about 200 words of scientific knowledge.

Meteor Meteor is a stone body in which cosmic meteors outside the earth leave their original orbit or are scattered on the earth into fragments. It is a precious and rare physical specimen for human beings to directly understand the stars in the solar system, which is of great collection value.

According to the observation of Canadian scientists in 10, more than 20 tons of meteorites landed on the earth every year, about 20 thousand pieces. Because most meteorites fall in sparsely populated areas such as oceans, weeds, forests and mountains, only dozens of meteorites are found and collected every year, and the number is very small.

Meteorite, when not falling into the earth's atmosphere, is a kind of stone, iron or a mixture of stone and iron floating in outer space. If it falls into the atmosphere, it will become a meteorite that we usually see falling to the ground without being burned by the atmosphere. Simply put, the so-called meteorite is the debris left by a tiny asteroid "hitting the earth". China is the first country to find meteorites in the world. It was in the Neolithic Age, and then it was recorded in writing until the end of the 20th century. There are many names marked by "meteorite", such as "Meteor Mountain" and "Meteor Lake".

Meteorites are generally divided into three categories according to composition, namely iron meteorites, also known as meteorites. Generally, the content of iron and nickel is above 95, including 80-95 iron and 5-20 nickel.

The density is 8 to 8.5. Other components may include sulfides, diamonds, rare earth elements and silicates.

Iron meteorites account for about 3 of the total number of meteorites. The world No.3 iron meteorite was discovered in Qinghe, Xinjiang, China at the end of 19, with a size of 2.42* 1.85* 1.37 and a weight of about 30 tons.

This meteorite contains 88.67% iron and 9.27% nickel. It contains many kinds of minerals that are not found on the earth, such as pyrite, zeolite and other cosmic minerals.

Supernova Sometimes, looking up at the starry sky, you may be surprised to find that there is a bright star in a certain star area that you have never seen before! However, after only a few months or even days, it gradually disappeared. This "strange" star is called a nova or supernova.

In ancient times, it was also called "guest star", which means "visiting star". Novas and supernovae are a kind of variable stars.

When people saw them suddenly appear, they once thought they were just newborn stars, so they were named "new stars". In fact, they are not only newborn stars, on the contrary, they are dying old stars.

In fact, they are exploding red giants. We have mentioned more than once that when a star enters old age, its center will shrink inward, while its outer shell will expand outward, forming a red giant.

The red giant star is very unstable, and one day it will explode violently, throwing its shell out and revealing the white dwarf or neutron star hidden in the center. In the Big Bang, the star will lose most of its mass and release huge energy at the same time.

In this way, in just a few days, its luminosity may increase by hundreds of thousands of times. Such stars are called "new stars". If the explosion of a star is more violent, its luminosity can even be increased by more than100000 times. Such a star is called a supernova.

The intensity of supernova explosions is unbelievable. It is said that the energy it pours out in a few days is equivalent to the energy emitted by a young star in hundreds of millions of years, so that it looks as bright as the whole galaxy! The explosion of nova or supernova is an important part of celestial evolution.

It is the glorious funeral of old stars and the promoter of new stars. The explosion of supernovae may trigger the birth of countless stars in nearby nebulae.

On the other hand, the ashes of nova and supernova explosions are also important materials for the formation of other celestial bodies. For example, many material elements on our planet today come from stars that have long since disappeared.

The volume of the sun is 6.5438+0.3 million times that of the earth, and it is the central celestial body of the solar system. An ordinary star in the milky way galaxy.

The average distance from the earth 1.496 million kilometers, the diameter 1.39 million kilometers, and the average density 1.409g/cm? 3. The mass is 1.989 * 10 33g, the surface temperature is 5770 Kelvin, and the center temperature is 15 million Kelvin. From inside to outside, there are the nuclear reaction area of the sun, the troposphere of the sun and the atmosphere of the sun.

Thermonuclear reactions continue in its central region, and the energy generated is emitted into space by radiation. One of the 2.2 billion energies radiates to the earth and becomes the main source of light and heat on the earth.

The sun is an ordinary star, and it has spent about half of its main sequence career on the Herro diagram. It is a ball of hot gas (strictly speaking, plasma) with a mass of 1989 1000 billion tons (about 330,000 times the mass of the earth) and a diameter of1392,000 km (about 109 times the diameter of the earth).

Its average density is 1.4 times that of water, but this average density implies a wide density range, from the ultra-high density core to the thin outer layer. As a stellar sun, its overall appearance is luminosity of 38.3 billion watts and absolute magnitude of 4.8. It is a yellow G2 dwarf with an effective temperature of 5800 Kelvin.

The average distance between the sun and the earth around it is 149597870km(499.005 light seconds or 1 astronomical unit). By mass, it is composed of 7 1% hydrogen, 26% helium and a small amount of heavy elements.

The angular diameter of the circular surface of the sun in the sky is 32 minutes, which is very close to the angular diameter of the moon as seen from the earth. What a wonderful coincidence (the diameter of the sun is about 400 times that of the moon, and the distance from us is just 400 times that of the earth and the moon), which makes the eclipse look particularly spectacular. Because the sun is much closer to us than other stars, its apparent magnitude reaches -26.8, making it the brightest celestial body on earth.

The sun rotates once every 25.4 days (average period; The equator rotates faster than high latitudes) and revolves around the center of the Milky Way every 200 million years. The sun is slightly flattened due to its rotation, which is 0.00 1% different from the perfect sphere, which is equivalent to a difference of 6km between the equatorial radius and the polar radius (the earth is 2 1km, the moon is 9km, Jupiter is 9000km, and Saturn is 5500km).

Although the difference is small, it is important to measure this flatness, because any slightly larger flatness (even 0.005%) will change the influence of solar gravity on Mercury's orbit, making the test of general relativity based on Mercury's perihelion precession unreliable. You think it's too long. You can cut a little from the middle.

7. Common sense of life needs about 200 words urgently.

Nineteen bad habits 1. Get up first and cover the human body itself-this is also a source of pollution.

In a night's sleep, human skin will emit a lot of water vapor, making the quilt moist to varying degrees. There are 145 chemicals excreted by human breath and pores distributed all over the body, and 15 1 chemicals evaporated by sweat.

The quilt absorbs or absorbs moisture and gas. If it is not allowed to be emitted, it will overlap, which will easily make the quilt damp and be polluted by chemicals. People who don't eat breakfast will feel tired and dizzy if they eat irregularly. Over time, it will cause malnutrition, anemia, decreased resistance, pancreas and gallstones.

3. Loosening the belt after meals can reduce the intra-abdominal pressure, increase the activity of digestive organs and the load of ligaments, thus promoting the aggravation of intestinal peristalsis, prone to intestinal volvulus, abdominal distension, abdominal pain, vomiting and gastroptosis. Sleeping after a meal will make the blood in the brain flow to the stomach. Because blood pressure decreases, the oxygen supply to the brain will also decrease, leading to extreme fatigue after meals, which is easy to cause heartburn, indigestion and obesity.

If the blood supply is insufficient, you will fall asleep after meals. This motionless state can easily lead to a stroke. 5. Eating too much can easily lead to memory loss, slow thinking, inattention and weakened stress ability.

Often over-satiated, especially over-satiated dinner, due to excessive intake of calories, will make the body fat excess, blood lipids increase, leading to cerebral atherosclerosis. It will also cause a substance called "fibroblast growth factor" to grow tens of thousands of times in the brain, which is a protein that promotes arteriosclerosis.

The result of cerebral arteriosclerosis will lead to hypoxia and lack of nutrition in the brain, thus affecting the metabolism of brain cells. Often full, it can also induce gallstones, cholecystitis, diabetes and other diseases, which will make people aging before they get old and shorten their life span.

6. More and more evidences show that the longer the hobby of eating sugar on an empty stomach, the more serious the damage to protein absorption. Because protein is the foundation of life activities, eating sugar on an empty stomach for a long time will affect all kinds of normal functions of the human body, making the human body weak and shortening its life span.

7. Eating salty food sodium stays in the human body, which is easy to form or aggravate high blood pressure and heart disease. 8. Beards have the ability to absorb harmful substances.

When people inhale, harmful substances adsorbed on their beards may be inhaled into the respiratory tract. According to the quantitative analysis of the air composition inhaled by bearded people, it is found that the inhaled air contains dozens of harmful substances, including carcinogens such as phenol, toluene, acetone and isoprene, and the air pollution index inhaled by bearded people is 4.2 times that of ordinary air.

If you have a beard on your chin and a moustache, the pollution index can be as high as 7.2 times. Coupled with smoking and other factors, the pollution index will be as high as 50 times that of ordinary air.

9. Crossing your legs and crossing your legs will make the blood flow in your legs poor and affect your health. If you are a patient with venous tumor, arthritis, neuralgia and venous thrombosis, crossing your legs will make your condition worse.

Especially people with long legs or pregnant women, it is easy to get venous thrombosis. 10. Squinting, rubbing your eyes and squinting, crow's feet are easy to appear in the corner of your eyes.

Habitual squinting can also cause eye muscle fatigue, dizziness and headache. When rubbing your eyes, germs can infect your eyes from your hands, leading to inflammation, broken eyelashes or falling off.

1 1. Forced urination may cause acute cystitis, characterized by frequent urination, dysuria, small abdominal distension and pain. A research report released by American scientists pointed out that people who have the habit of holding their urine are five times more likely to develop bladder cancer than the average person.

When holding urine, the urine stored in the bladder cannot be discharged in time, resulting in artificial urinary retention. If you hold your urine regularly, your sphincter and detrusor will always be in a state of tension; If you hold your urine for too long, the amount of urine in your bladder will continue to increase, and the internal pressure will gradually increase. After a long time, symptoms of bladder neck obstruction will appear, leading to dysuria and obstruction, or urinary leakage and incontinence.

Urinary retention is also easy to cause complicated infection and stones, and will also affect renal function in severe cases. 12. Take a nap at your desk. Most people will have temporary blurred vision after taking a nap at your desk. The reason is that the eyeball is compressed, causing corneal deformation and curvature change.

If you press your eyeball every day, the intraocular pressure will be too high, and if this continues, your vision will be damaged. 13. Lying prone makes the spine bend, which increases the pressure on muscles and ligaments, making people still unable to rest while sleeping.

In addition, it will increase the pressure on the chest, heart, lungs and face, leading to facial edema and bloodshot eyes after waking up. 14. If you don't wash your face before going to bed, the cosmetics left on your face will cause inflammation such as acne and pinholes, and it will also make your eyes inflamed and cause skin allergic reactions.

15. It is more important to brush your teeth before going to bed than after getting up. This is because the bacteria and residues left in the mouth and teeth have a strong corrosive effect on teeth and tooth age at night. 16. Sleeping late will inhibit the cerebral cortex for a long time, which will cause a certain degree of artificial brain dysfunction, lead to a decline in understanding and memory, and also reduce immune function, disrupt the biological rhythm of the body, make people lazy and inert, and at the same time, it is not good for muscles, joints and urinary system.

In addition, poor blood circulation and untimely systemic nutrition delivery will also affect metabolism. Because the doors and windows are closed at night to sleep, the indoor air is cloudy in the morning, and falling in love with the bed is easy to cause respiratory diseases such as colds and coughs.

17. The hot water bath time is too long. In tap water, chloroform and trichloroethylene are harmful substances that are easy to volatilize in water. Because there are more opportunities for water droplets to contact the air during bathing, these two harmful substances are released a lot. According to the collected data, only 25% chloroform and 40% trichloroethylene are released into the air if hot water bath is used. Bathing with hot water will release 50% chloroform and 80% trichloroethylene into the air.

18. Gambling is harmful to a person's physical and mental health, because gambling itself is a strong * * *. Long-term gambling will make the central nervous system in a state of high tension for a long time, which will easily lead to increased hormone secretion, vasoconstriction, increased blood pressure, and accelerated heartbeat and breathing. This will increase the incidence of cardiovascular diseases, as well as peptic ulcer and tension headache. 19. Some young and middle-aged people engaged in mental work and business are under too much pressure.

8.200 words self-help and self-care tips

From the words "learn to protect yourself", I think: life belongs to us only once.

If we want to cherish life, we must learn to survive and protect ourselves. I once saw a story on the Internet: I remember one Thursday afternoon, after school, "I" walked home happily.

When I walked to the neighborhood Committee, I saw that the road was being built ahead, so I detoured and walked home from another path. Walking, I suddenly heard a voice: "Little Sister, are you out of school?" I looked up and a strange middle-aged man appeared in front of me.

"Well, school is over." "I" casually replied.

"I am your father's colleague. Don't you know me? " The stranger smiled and said to me. "I" looked up at him and remembered my father's colleagues I had met. "I have prepared some delicious sweets for you."

Then he took me by the hand and took out some sweets for me. I'm thinking, I haven't seen this man before. Is he mistaken for someone else or ...

"I" had a brainwave and asked, "Do you drive a truck, too? Where did my father drive today? " "yes! Yes! Your father drove out and asked me to pick you up. " After that, the stranger peeled a candy and wanted to put it in my mouth.

"This is a bad guy. My dad doesn't drive at all. " I suddenly became nervous. What should I do? I have seen many cases of bad guys cheating children on TV and in newspapers and magazines, and I only met them today. What should I do? There must be something wrong with the sugar in his hand. I can't eat it.

"I don't eat sugar, didn't dad tell you?" "I" said quickly, "Oh, I forgot." The stranger put the sugar into the bag reluctantly. "I'll take you to see your father."

He took my hand and said. I walk slowly, but my brain is running at a high speed. Usually, my parents taught me many ways to save myself and protect myself, and there were many articles in magazines.

By the way, I have an idea. "Every time I go to my father, I will buy a pack of cigarettes for my father. We will go to a small shop to buy cigarettes and go to my father. "

"I" smiled and said to the stranger, "OK, hurry up, your father is waiting for you." Looking at his self-righteousness, "I" couldn't help laughing internally: you have been cheated.

The stranger took my hand and came to the store. At this time, "I" pointed to the oncoming man in the distance and said, "Dad, why are you back?" The stranger's face suddenly became tense, and his hand tightly holding me suddenly loosened.

"I" said to the stranger, "Dad is back. Let's go there! " "No, no, I left early." I saw him say in panic, then ran to the back and disappeared in the blink of an eye.

This incident tells me a truth, don't eat strangers' food. When you meet bad people, you should keep calm and use your wisdom correctly to deal with them, so as to achieve the purpose of self-protection. How important it is to learn to protect yourself! It can not only help us when necessary, but also save us a lot of unnecessary troubles.