1. Why hasn’t the Chalk Public Examination’s “General Knowledge Test Points Comprehensive Guide” been updated in two years?

For a person taking the civil service exam, classroom teachers’ lectures, videos, and books are the key to our success. The three magic weapons. An experienced teacher who understands the exam will help us quickly master the problem-solving skills. Video learning will help us review repeatedly. A good book can help us lay a solid foundation and save review time. Just like the general knowledge part of the exam, the test is very broad, involving culture, technology, history, politics, law, geography, common sense and other knowledge. It will be very tiring for us to study by ourselves, so we need a professional book to summarize and organize it for us. But can you imagine that a common sense test book on FB has not been updated for two years. In this way, we cannot review the updated test points, so our score on common sense can be imagined.

I didn’t notice it at first. It was my classmates who reminded me and told me that the knowledge points in it have not been updated for a long time. I didn’t quite believe it. I think an organization must be rigorous when publishing books. Candidates are helpful. As I browsed, I discovered that this is indeed a fact.

For example, for the law subjects that are often tested, the books still contain some civil law, criminal law, etc., which are similar to university undergraduate textbooks. However, some of the latest laws are not covered and must be updated in a timely manner. If more questions are asked to test old laws, it will be unfair to illegal professional candidates like us. Fortunately, the national examination is more inclined to test new laws, but this way the focus is on existing laws and no updated introduction to new laws. This completely misleads our review direction. As a result, a lot of things you read are useless, and you can’t even take the exam.

After being reminded by my classmates, I found that it is also true in science and technology and current affairs. We can understand the relative lag in knowledge. After all, it takes time to compile a book, and it cannot be updated all the time, but it cannot stay two years ago. How can we review the newly added test points? We do not require you to update to the latest ones, even if it is updated to the first half of this year. It's okay, it's really heartbreaking.

Have you considered our feelings? I admit that your courses are relatively cheaper, but that’s because they are online courses. We can’t just deal with books. As an education company, should we do something about it? The students are responsible and responsible for your company. It cannot be compared to big brands such as Huatu and Zhonggong that increase teaching and research, but we cannot be devoid of responsibility. Recently, I have also paid attention to FB because of the issue of this book. Instead of sparring and trolling every day, why not focus on the product and be responsible for our students, at least worthy of the money you charge and the trust we had in you.

I won’t say more. If I say too much, some people will say that I am a troll from other institutions. I just expressed my dissatisfaction and let more people who want to buy this book have it. As I understand it, don’t waste money, let alone time, and waste your limited and intense review time on such a book that was written two years ago. It is fair and reasonable. If you find this book and read it, you will know whether what I said is true or false. , I hope the leaders of the institution can see and make improvements, and really don’t let us down anymore. It is a kind of courage for us to choose a company that is not a big brand and has advantages in online teaching. Of course, it also has its own factors. Don’t mislead others. Wrong oneself.

2. Answers to page 49 of the Encyclopedia of Primary School Mathematics

That’s it; Mock Test 1. Volume of Cylinder 1. Find the volume of each cylinder below.

(1) Base area 0.6 square meters, height 0.

5 meters (2) The base radius is 3 cm and the height is 5 cm. (3) The bottom diameter is 8 meters and the height is 10 meters.

(4) The circumference of the base is 25.12 decimeters, and the height is 2 decimeters.

2. There are two cylinders with equal base areas. The height of the first cylinder is 4/7 of the second cylinder. The volume of the first cylinder is 24 cubic centimeters. The volume of the second cylinder is how many cubic centimeters more than the first cylinder? 3. At diameter 0.

In an 8-meter water pipe, the water flow speed is 2 meters per second. How many cubic meters of water flow through in 1 minute? 4. The diameter of the toothpaste outlet is 5 mm. Xiaohong squeezes out 1 cm of toothpaste every time she brushes her teeth. This toothpaste can be used 36 times.

The new packaging of this brand of toothpaste only changes the diameter of the outlet to 6 mm. Xiaohong still squeezes out 1 cm long toothpaste as usual. In this way, how many times can this toothpaste be used? 5. Cut off 1 of a cylindrical steel material.

5 meters, its cross-sectional diameter is measured to be 4 centimeters. If steel weighs 7 per cubic centimeter.

8 grams, how many kilograms does the cut piece of steel weigh? (Keep the number in kilograms.) 6. Cut a cube of wood with an edge length of 6 decimeters into the largest cylinder. What is the volume of this cylinder in cubic decimeters? 7. If the height of a cylinder is shortened by 3 cm, its surface area will be reduced by 94.

2 square centimeters. By how many cubic centimeters has the volume of this cylinder been reduced? 2. Volume of a cone 1. Multiple choice questions.

(1) The volume of a cone is a cubic meter, and the volume of a cylinder with the same base and height is ( ) ① a cubic meter ② 3a cubic meter ③ 9 cubic meters (2) Put a section The round steel is cut into the largest cone. The volume of the cylinder is 6 cubic meters. The volume of the cone is ( ) cubic meters ① 6 cubic meters ② 3 cubic meters ③ 2 cubic meters 2. Judge whether it is true or false. (1) The volume of a cylinder is equivalent to three times the volume of a cone... ( ) (2) A cylinder of wood is processed into the largest cone. The ratio of the volume of the removed part to the volume of the cone is 2:1 …………( ) (3) A cylinder and a cone have the same base and height, and the volume difference is 21 cubic centimeters. The volume of the cone is 7 cubic centimeters... ( ) 3. Fill in the blanks (1) The volume of a cylinder is 18 cubic centimeters, and the volume of the cone is 18 cubic centimeters. The volume of a cone with equal bases and equal heights is ( ) cubic centimeters.

(2) The volume of a cone is 18 cubic centimeters, and the volume of a cylinder with the same base and height as it is () cubic centimeters. (3) The sum of the volumes of a cylinder and a cone with the same base and height is 144 cubic centimeters.

The volume of the cylinder is ( ) cubic centimeters, and the volume of the cone is ( ) cubic centimeters. 4. Find the volume of the following cone.

(1) Bottom radius 4 cm, height 6 cm. (2) The bottom diameter is 6 decimeters and the height is 8 centimeters.

(3) Bottom circumference 31.4 cm, height 12 cm.

5. A conical sand pile with a height of 1. 5 meters, the bottom radius is 2 meters, and the sand weighs 1 per cubic meter.

8 tons. How many tons does this pile of sand weigh? 6. An approximately conical wheat pile with a base circumference of 12.

56 meters, height 1.2 meters, if each cubic meter of wheat weighs 750 kilograms, how many kilograms does this pile of wheat weigh? 7. A rectangular container is 5 cm long, 4 cm wide, and 3 cm high. After it is filled with water, pour all the water into a conical container with a height of 6 cm until it is completely full.

What is the base area of ??this conical container in square centimeters? Reference answers: 1. Volume of cylinder 1. Find the volume of each cylinder below. (1) The base area is 0.

6 square meters, height 0. 5 meters 0.

6 * 0. 5 = 0.

3 (cubic meters) (2) The base radius is 3 cm and the height is 5 cm. 3.

14 *3 ? * 5 = 141. 3 (cubic centimeters) (3) The diameter of the base is 8 meters and the height is 10 meters.

3. 14 *(8÷2)?*10 = 502.

4 (cubic meters) (4) The perimeter of the base is 25. 12 decimeters, the height is 2 decimeters.

3. 14 * (25.

12÷3. 14÷2)? * 2 = 100.

48 (cubic decimeter) 2. There are two cylinders with equal base areas. The height of the first cylinder is 4/7 of the second cylinder. The volume of the first cylinder is 24 cubic centimeters. The volume of the second cylinder is how many cubic centimeters more than the first cylinder? For two cylinders with the same base area, the height of the first cylinder is 4/7 of the second cylinder, and the volume of the first cylinder is also 4/7 of the second cylinder.

24 ÷ 4/7 – 24 = 18 (cubic centimeters) Answer: The volume of the second cylinder is 18 cubic centimeters more than the first cylinder. 3. At diameter 0.

In an 8-meter water pipe, the water flow speed is 2 meters per second. How many cubic meters of water flow through in 1 minute? 3. 14 * (0.

8÷2)? * 2 * 60 = 60. 288 (cubic meters) Answer: Then there are 60 water flowing through in 1 minute.

288 cubic meters.

4. The diameter of the toothpaste outlet is 5 mm. Xiaohong squeezes out 1 cm of toothpaste every time she brushes her teeth.

This toothpaste can be used 36 times. The new package launched by this brand of toothpaste only changed the diameter of the outlet to 6 mm. Xiaohong still squeezed out 1 cm long toothpaste as usual.

In this way, how many times can this toothpaste be used? Toothpaste volume: 1 cm = 10 mm 3. 14 * (5 ÷ 2)? * 10 * 36 = 7065 (cubic millimeters) 7065 ÷ [3.

14 *(6÷2)? * 10] = 25 (times) Answer: In this way, this toothpaste can only be used 25 times. 5. Cut off 1 of a cylindrical steel material.

5 meters, its cross-sectional diameter is measured to be 4 centimeters. If steel weighs 7 per cubic centimeter.

8 grams, how many kilograms does the cut piece of steel weigh? (Keep the number in kilograms.) 1.

5 meters = 150 centimeters 3. 14 * (4÷2)? * 150 * 7.

8 = 14695. 2 (grams) = 14.

6952 (kilogram) ≈ 15 (kilogram) Answer: The cut piece of steel weighs 15 kilograms. 6. Cut a cube of wood with an edge length of 6 decimeters into the largest cylinder. What is the volume of this cylinder in cubic decimeters? 3.

14 *(6÷2)? * 6 = 169. 56 (cubic decimeter) Answer: The volume of this cylinder is 169.

56 cubic decimeters. 7. The picture on the right is a cylinder. If its height is shortened by 3 cm, its surface area will be reduced by 94.

2 square centimeters. By how many cubic centimeters has the volume of this cylinder been reduced? Bottom circumference: 94.

2÷3 = 31. 4 cm 3.

14 *(31.4÷3.

14÷2)? * 3 = 235.5 (cubic centimeters) Answer: The volume of this cylinder is reduced by 235.

5 cubic centimeters. 2. Volume of a cone 1. Multiple choice questions.

(1) The volume of a cone is a cubic meter, and the volume of a cylinder with the same base and height is (②) ① a cubic meter ② 3a cubic meter ③ 9 cubic meters (2) A section of round steel is cut into the largest cone. The volume of the cylinder is 6 cubic meters, and the volume of the cone is (③) cubic meters ① 6 cubic meters ② 3.

3. Write down the scientific knowledge in sections

A complete collection of daily science knowledge 1. When you eat spicy food and feel that it is going to be spicy to death, put it in your mouth. A little salt, hold it in your mouth, spit it out and rinse your mouth, it will no longer be spicy; ?2. If your teeth are yellow, you can chew peanuts in your mouth and brush your teeth for three minutes, it is very effective; 3. If you have a small area of ??skin For injuries, burns or scalds, apply a little toothpaste to immediately stop bleeding and relieve pain; ?4. Often there are ugly tea stains left in cups filled with tea, wash them with toothpaste and they will be very clean; ?5. Open your mouth slightly when you look up and nod eye drops , so that the eyes will not blink randomly; ?6. If there is an ulcer in the mouth, stick it on the ulcer with vitamin C. After it dissolves, the ulcer will be basically healed; ?7. If there is small dust in the eyes, close the eyes and exert force Cough a few times, and the dust will come out on its own; ?8. After washing your face, dip your fingers into some fine salt and rub it gently on both sides of the nose, then rinse with water. Blackheads and acne will be removed, and pores will be cleared. ?9. When you have just been bitten by a mosquito, apply soap and it will not itch; ?10. If your throat or gums are inflamed, cut the watermelon into small pieces at night and eat it with salt. Remember to If it is at night, the symptoms will be relieved and you will be fine the next day; ?11. Blow the hair dryer on the label until the glue of the label is hot, and you can easily peel off the label; ?12. Bring clothes when traveling If you are afraid of wrinkles, you can roll each piece of clothing into a roll; ?13. Drink some vinegar when you burp, and you will see immediate results; ?14. Eat something with a peculiar smell, such as garlic and stinky tofu. A few peanuts will be enough; ?15. To treat coughs, especially dry coughs, fry eggs with pure sesame oil before going to bed at night. Add a little more oil. Do not add any seasonings. Eat while it is hot and then go to bed. The effect will be obvious after taking it for several days; ?16. If a girl with thick wrists wants to wear a thinner bracelet, she should not wear it forcefully. She should put a plastic bag on her hand and then wear the bracelet. It is very easy to wear and will not touch her hands. If it hurts, take it off in the same way; ?17. The skin of chestnuts is difficult to peel. Peel off the shell first, then put it in the microwave oven and spin it. Take it out and rub it while it is hot, and the skin will fall off; ?18. When arranging flowers , add a drop of dishwashing liquid to the water and it can last for several days; ?19. Put the walnuts into the pot and steam them for ten minutes, take them out and put them in cold water and then smash them open, and you can take out the complete peach kernels; ? 20. Put the shrimps into a bowl, add a little salt and edible alkali powder, rub them with your hands for a while, then soak them in water, and then rinse them with water. The fried shrimps will be as transparent as crystal, tender and delicious; ?21 .When frying meat, first soak the meat in baking soda water for ten minutes, pour out the water, and then add the flavor. The fried meat will be very tender and smooth; ?22. Soak the remaining tea leaves in water for a few days, then pour it on the roots of the plants, which can promote the growth of the plants. growth; ?23. Dry the remaining tea leaves and put them in toilets or ditches to burn and smoke them, which can eliminate the odor and have the function of driving away mosquitoes and flies; ?24. How to re-cook the rice with uncooked rice: You can use chopsticks to stick some holes in the rice that go straight to the bottom of the pot. hole, sprinkle a little rice wine and simmer again, ?25. If only the surface is raw, just flip the surface to the middle and simmer again; ?26. How to remove greasiness from screen windows: put the cigarette butts left from washing clothes and smoking in the water , after dissolving, use it to clean glass windows and screens, the effect is really good; ?27. Just put a small piece of chalk in the jewelry box to keep the jewelry shiny; ?28. The surface of the table and bottle is not smooth Traces of dried glue can be wiped with wind oil essence; ?29. Always carry a small dry battery in your bag when going out. If your skirt has static electricity, rub the positive terminal of the battery on the skirt a few times to remove the static electricity; ?30. No matter If any part of the shoe rubs your foot, you can apply a little white wine on the place where the shoe rubs your foot to ensure that it will not rub your foot. 31. When cooking vegetables, if you must blanch them, the best water is used to blanch the vegetables. Make the most of it.

For example, when making dumplings, an appropriate amount of blanched water can be put into the meat filling, which not only ensures nutrition, but also makes the dumpling filling delicious and soupy; ?32. Feet are prone to sweating in summer, so use it every day Soaking your feet in light salt water can effectively deal with sweaty feet; ?33. Sunbathing after swimming in summer can prevent skin strain and other diseases; ?34. Pillows are prone to moisture and mold growth in summer, and frequent exposure to the sun is good for your health; ?35. Eat more Barley and adzuki bean porridge and other moist foods can strengthen the spleen and prevent heat stroke; 36. Prevent insomnia: talk less before going to bed, avoid drinking strong tea, do not use your brain before going to bed, and wash your feet with hot water and vinegar; 37. Honeysuckle It has the effect of dispersing rheumatism. Decoction the juice of honeysuckle and mix it with honey to relieve summer heat. ?38. Drinking tea after eating too fatty food can stimulate the autonomic nervous system and promote fat metabolism. ?39. Lack of sleep will cause To become stupid, you need eight hours of sleep a day, and having a nap habit can delay aging; ?40. Your hands can easily become dry and rough, so soaking your hands in vinegar for ten minutes can protect your skin; ?41. In summer, wipe the mat with clean water with toilet water added. The mat can keep the mat fresh and clean. Of course, it is best to wipe along the lines of the mat, so that the toilet water can penetrate into the lines and gaps of the mat, so that the cool and comfortable feeling will last longer; 42. Eat more tomatoes, citric acid and other acidic vegetables and fruits for breakfast, which is good for nourishing the liver ; ?43. Refreshing and anti-itching. When washing your hair or taking a bath, add five or six drops of toilet water in the water, which can have a good cooling effect, remove bacteria, remove prickly heat and relieve itching; ?44. Grapes contain sleep-auxiliary hormones, and regular consumption can help sleep ?45. Drinking more tomato soup in summer can not only obtain nutrients, but also replenish water. Tomato soup should be cooked and cooled before drinking. The lycopene contained in it has certain effects on fighting prostate cancer and protecting myocardium. It is most suitable for Men; Brushing your teeth immediately after eating acidic substances will damage your dental health; ?46. When the skin is broken due to trauma, apply toothpaste on the injured area to reduce inflammation and stop bleeding, and then bandage it. As a temporary first aid drug, medicated toothpaste is the most effective; ?47 .Spray white vinegar on the cutting board and leave it for half an hour before washing it. It can not only sterilize but also remove odor; ?48. Drinking yogurt can relieve irritability after hangover. Yogurt can protect the gastric mucosa, delay alcohol absorption, and contains calcium. Rich in alcohol, it is especially effective in relieving irritability after drinking; ?49. When the foreskin of leather shoes has been stored for a long time and becomes moldy, you can use a soft cloth dipped in alcohol and water (1:1) solution to wipe it; ?50. When you have a headache or dizziness, you can apply it on the temples Use toothpaste, because toothpaste contains menthol and clove oil, which can relieve pain; ?51. Freeze candles for 24 hours before inserting them into the birthday cake. The candle oil will not flow when lit; ?52. White clothes are easy to wash after washing If it turns yellow, you can take a basin of water, add two or three drops of blue ink, soak the washed clothes for a quarter of an hour, do not wring them out, just put them in the sun to dry them, and they will be white and dry.

4. Common sense,,,,,

1. If you eat something spicy and feel like it will kill you, put a little salt in your mouth and hold it in your mouth. Spit it out and rinse your mouth, it won't be spicy anymore.

? 2. If your teeth are yellow, you can chew peanuts and hold them in your mouth, and brush your teeth for three minutes. It is very effective. 3. If there is a small area of ??skin damage or burns or scalds, apply a little toothpaste to immediately stop bleeding and relieve pain.

4. There are often ugly tea stains left in the cups containing tea. Wash them with toothpaste and they will be very clean. 5. Raise your head and open your mouth slightly when applying eye drops, so that your eyes will not blink randomly.

6. If you have ulcers in your mouth, apply vitamin C to the ulcer. After it dissolves, the ulcer will basically be cured. 7. If there is small dust in your eyes, close your eyes and cough hard a few times, and the dust will come out on its own.

8. After washing your face, use your fingers to dip some fine salt and rub it gently on both sides of the nose, then rinse with water. Blackheads and acne will be removed, and pores will become smaller. . 9. When you are just bitten by a mosquito, apply soap and it will stop itching.

10. If your throat or gums are inflamed, cut the watermelon into small pieces at night and eat it with salt. Remember it must be at night! The symptoms will be relieved at that time and will be better the next day.

11. Blow the hair dryer against the label until the glue of the trademark is hot, and then the label can be easily removed. 12. If you are afraid of wrinkles when traveling with clothes, you can roll each piece of clothing into a roll.

13. Drink some vinegar when you always have hiccups and you will see immediate results.

14. If you eat something with a peculiar smell, such as garlic or stinky tofu, just eat a few peanuts and it will be fine.

15. To treat coughs, especially dry coughs, before going to bed at night, fry eggs with pure sesame oil, add a little more oil, and do not add any seasonings. Eat it while it is hot before going to bed, and even eat it. The effect is obvious within a few days. 16. If a girl with thick wrists wants to wear a thin bracelet, she should not wear it forcefully. She should put a plastic bag on her hand and put the bracelet on. It is very easy to wear and will not cause pain to her hand. The same method is used to remove it.

17. The skin of chestnuts is difficult to peel. Peel off the outer shell first, then put it in the microwave oven, take it out and rub it while it is hot, and the skin will fall off. 18. When arranging flowers, add a drop of dishwashing liquid to the water to maintain them for several days.

19. Put the walnuts into the pot and steam for ten minutes, take them out and put them in cold water and then smash them open to get the complete peach kernels. 20. Put the shrimps into a bowl, add a little salt and edible alkali powder, rub them with your hands for a while, soak them in water, and then rinse them with water. The fried shrimps will be as transparent as crystal, tender and delicious.

21. When frying meat, first soak the meat in baking soda water for ten minutes, pour out the water, and then add the flavor. The meat will be very tender when fried. 22. Soak the remaining tea leaves in water for a few days and then pour them on the roots of the plants to promote plant growth.

23. Dry the remaining tea leaves and burn them in toilets or ditches to eliminate odors and repel mosquitoes and flies. 24. How to re-cook raw rice: Use chopsticks to poke some holes in the rice that go straight to the bottom of the pot, sprinkle in a little rice wine and re-simmer.

25. If only the surface is cooked, just flip the surface layer to the middle and simmer again. 26. How to remove greasy screens: Put washing powder and cigarette butts left from smoking in water. After dissolving, use them to clean glass windows and screens. The effect is really good.

27. Just put a small piece of chalk in the jewelry box to keep the jewelry shiny. 28. The adhesive traces on the surface of tables and bottles can be wiped with Fengyoujing.

29. Always carry a small dry battery in your bag when you go out. If your skirt has static electricity, rub the positive terminal of the battery on the skirt a few times to remove the static electricity. 30. No matter which part of the shoes rubs your feet, just apply a little white wine on the area where the shoes rub your feet, and it will stop rubbing your feet.

31. When cooking vegetables, if it is necessary to blanch them, it is best to use the water used to blanch the vegetables as much as possible. For example, when making dumplings, an appropriate amount of blanched water can be put into the meat filling, which not only ensures nutrition, but also makes the dumpling filling delicious and soupy.

32. Feet are prone to sweating in summer. Soaking your feet in light salt water every day can effectively deal with sweaty feet. 33. Basking in the sun after swimming in summer can prevent skin strain and other diseases.

34. In summer, pillows are prone to moisture and mold, so regular exposure to the sun is good for your health. 35. Eat more moist foods such as barley and adzuki bean porridge to strengthen the spleen and prevent heatstroke and dampness.

36. Prevent insomnia: avoid talking too much before going to bed, avoid drinking strong tea, do not use your brain before going to bed, and wash your feet with hot water and vinegar. 37. Honeysuckle has the effect of dispersing rheumatism. Decoction the honeysuckle in water to extract the juice and then mix it with honey to relieve heat.

38. Drinking tea after eating too fatty food can stimulate the autonomic nervous system and promote fat metabolism. 39. Lack of sleep will make you stupid. You need eight hours of sleep a day. Having a nap habit can delay aging.

40. Hands tend to become dry and rough. Soak your hands in vinegar for ten minutes to protect your skin. 41. In summer, wipe the mat with clean water added with toilet water to keep it fresh and clean.

Of course, it is best to wipe along the lines of the mat so that the toilet water can penetrate into the gaps of the mat, so that the cool and comfortable feeling will last longer. 42. Eat more tomatoes, citric acid and other acidic vegetables and fruits for breakfast, which is good for your liver.

43. Refreshing and relieving itching: When washing your hair or taking a bath, add five or six drops of toilet water to the water, which can have a good cooling effect, remove bacteria, remove prickly heat and relieve itching. 44. Grapes contain sleep-aiding hormones, and regular consumption can help you sleep.

45. Drinking more tomato soup in summer can not only obtain nutrients, but also replenish water.

Tomato soup should be cooked and cooled before drinking. The lycopene contained in it has certain effects on fighting prostate cancer and protecting myocardium, and is most suitable for men.

Brushing your teeth immediately after eating acidic substances will damage your dental health. 46. ??When the skin is broken due to trauma, apply toothpaste on the injured area to reduce inflammation and stop bleeding, and then bandage it. As a temporary first aid medicine, medicated toothpaste is the most effective.

47. Spray white vinegar on the cutting board and leave it for half an hour before washing it. It can not only sterilize but also remove odor. 48. Drinking yogurt can relieve irritability after drinking. Yogurt can protect the gastric mucosa, delay alcohol absorption, and is rich in calcium, which is especially effective in relieving irritability after drinking.

49. When the foreskins of leather shoes become moldy after being stored for a long time, you can wipe them with a soft cloth dipped in a solution of alcohol and water (1:1). 50. When you have a headache or dizziness, you can apply toothpaste on your temples because toothpaste contains menthol and clove oil which can relieve pain.

51. Candle Freeze Twenty-Four.

5. Chalk explanatory text

Whenever we are in class, the teacher will pick up the chalk and write on the blackboard. The chalk is very ordinary, but I praise it very much. it.

Although chalk has a short life, it has devoted its whole life's energy and life. Its daily job is to draw and draw, which is meaningless, but it works hard and does not feel boring or boring at all, and it wears out its long body.

Chalk worked hard on its black land and wore away its body, but it taught us literacy, painting, and "A, B, C..." Finally, It silently turned into pieces of white dust. What an ordinary and short life.

Although chalk only has a bare trunk, it attracts countless pairs of eyes hungry for knowledge and leads everyone to move forward bravely on the rugged road of science and culture without any complaints. When I saw the chalk, I thought of my respected teacher again.

Our teachers are as ordinary as chalk, and as unknown as chalk! However, they selflessly gave us a wealth of knowledge, dedicated themselves to a better tomorrow for the motherland, and sowed the seeds of knowledge on the land of China. I praise chalk because it devotes its life to people.

I praise teachers even more, because they work hard and cultivate students in order to make their students become the dazzling stars of the motherland and the hope of the world.

6. Common sense economic knowledge for high school students 49 What are the public ownership economies in our country?

Meaning: To comprehensively understand the meaning of the public ownership economy is to further break through the past "one, two, public and three pure" The public ownership economy includes public ownership, collective ownership, and the state-owned part of the joint-stock system. In addition, new ways of realizing the public ownership economy are also being explored: First, public assets dominate the total social assets.

Second, the state-owned economy controls the lifeline of the national economy and plays a leading role in economic development. First, public ownership of the means of production is the economic foundation of socialist production relations and the economic foundation of the socialist system.

Second, the public-owned economy controls the country’s economic lifeline and is the main pillar of socialist modernization. Third, the public ownership of the economy is the material basis for ensuring the stable and healthy development of the market economy along the direction of socialism.

Fourth, public ownership is the fundamental feature of socialism and the material guarantee for realizing that the working people of our country are politically the masters of the country and are economically equally prosperous.