Loss on investment in bitcoin
but you should understand that the risk of bitcoin is really great. You can't put all the eggs in the basket. You need to understand that you have to leave a way for yourself at any time. Even if you fail to invest in bitcoin, you still have other baskets. You won't put yourself in danger, and you won't have to sell houses, cars or jump off buildings in a word, a qualified investor should always understand that even if he can't make money, he can't touch the things he can't grasp. After all, the risk coefficient is too high
is false news on September 16, the media revealed that Liu Tao's husband Wang Ke lost 1.2 billion yuan in the first half of this year e to the failure of investing in bitcoin, which is very shocking
it is reported that Wang Ke thinks this is a very rare and good project, so she has put all her belongings on her hands, borrowed money from the bank, and invested all her money in bitcoin. Since May, her 200 million position in an exchange has burst, and she has lost 200 million in one day
in March, Wang Ke really made a lot of money. At the most, he could make more than 2 million a day, so Wang Ke increased his position and invested more money. As a result, the situation began to take a sharp turn in May, losing 200 million in one day. Wang Ke was unwilling to put in 200 million more, but he lost money in less than half a month
up to now, Wang Ke hasn't stopped. He keeps bursting his position and losing money, and he keeps raising money to invest in it. In the end, the exchange he took part in is suspected of illegal trading, which is seized by the police, and all the funds are frozen. As of August, Wang Ke has lost a total of 1.2 billion Li, and 500 million Li is borrowed
extended information
Liu Tao's husband Wang Ke responded that he has received wechat from many people who have not been contacted for a long time, and everyone is concerned about whether he is in trouble or not. He also said that he has become a regular rumor making target of marketing number. He is basically bankrupt from February to September every year, and it's almost time for him to divorce ring the holidays from September to November
but this time, the marketing number has played a new trick, which shows that it has carefully studied the relevant knowledge of currency. Originally, Wang Ke was as tolerant as before, but when he thought of Liu Tao, his wife, who was diligent, thrifty, optimistic and full of courage, he could not bear it any more
because every time Liu Tao makes a little achievement, the dirty water from the outside world will be overwhelming, which makes Wang Ke sigh how strong Liu Tao must be in order to go on
Wang Ke remembers his father-in-law who died soon, laments the impermanence of life, and criticizes the random fabrication of marketing numbers, the irresistible network, the fading of human nature, and so on. Wang Ke said that she could avoid many minefields such as P2P and xiaohuangche, but she couldn't avoid the rumor making of the marketing number. She also mocked herself that she didn't know whether the paper money she burned for her father that day was 1.2 billion
finally, Wang Ke encouraged others to stick to themselves and love life, and ended the whole article with a sentence full of chicken soup
With the improvement of people's living conditions, we all have some spare funds in our hands. Some people want to make some investment through these funds and get rich returns. However, we all know that investment is risky after all, so some people will definitely have some losses. This time, a couple in Dalian directly lost 20 million yuan e to their investment in bitcoin. After the loss of such a large amount of property, they couldn't think of it for a moment. They wanted to escape the current problem by committing suicide, and killed their three-year-old daughter before committing suicide{ RRRRR}
How do I view this incident
first of all, I want to tell you that investment is risky. If you don't have complete assurance in your daily life, or are not very keen on investment, you must keep your cash. After all, people are having a hard time now. You have some cash in your hand, and you can deal with it when you encounter problems. The main reason why this tragedy happened to the couple was that they believed that bitcoin would rise sharply, so they put all their wealth into it, which has played a very good warning effect for us
Eth interface refers to the interface, is the most widely used LAN communication mode, but also a protocol. Ethernet interface is the port of network data connection
each version of Ethernet has the maximum length limit of cable (that is, the length without amplification). The signal within this range can be transmitted normally, and beyond this range, the signal cannot be transmitted
in order to allow the construction of a larger network, repeaters can be used to connect multiple cables. Repeater is a physical layer device, which can receive, amplify and retransmit signals in two directions
extended data
several common Ethernet interface types
1, SC optical fiber interface
SC optical fiber interface has been applied in the era of 100base TX Ethernet, so it was called 100base FX (F is the abbreviation of optical fiber). However, at that time, because the performance was not more prominent than twisted pair, but the cost was higher, so it was not popularized. Now the instry vigorously promotes gigabit network, and SC optical fiber interface is re valued
2, RJ-45 interface
this kind of interface is the most common network equipment interface, commonly known as "crystal head", the professional term is RJ-45 connector, which belongs to the type of twisted pair Ethernet interface. RJ-45 plug can only be inserted along the fixed direction, and a plastic spring piece is set to be stuck with RJ-45 slot to prevent it from falling off
FDDI interface is one of the most mature LAN technologies with the highest transmission rate. It has the characteristics of timed token protocol, supports a variety of topologies, and the transmission medium is optical fiber. Fiber distributed data interface (FDDI) is a set of protocols developed by American National Organization for Standardization (ANSI) to transmit digital signals on optical cablessource: Network Ethernet interface
the notice requires commercial banks and third-party payment institutions to close all accounts of these platforms, and the deadline is April 15. Before this deadline, these accounts can still be withdrawn, but not recharged. If it fails to close within the time limit, the central bank will punish it. In addition, the central bank also requires the payment and clearing association to continue to track the changes in the recharge means of the platform and report to commercial banks in a timely manner.
In the past 24 hours, more than 110000 people in bitcoin have burst their positions, and 5.8 billion funds have been swallowed. In fact, I think the team is cutting leeks. In fact, the decline of bitcoin can be met in advance, and nothing can prosper all the time, So for most people, they still need to maintain a rational attitude to buy some funds or stocks and bonds. If it becomes a state of large-scale loss, then their money will be tied up, which is certainly not very good for them. Our attitude towards bitcoin is that it will not decline, it will only rise, So most people may not consider this situation and put all their money into it, but in such a situation, if the institutions withdraw their funds, they will inevitably face a lot of capital losses of retail investors
however, in the face of such a situation, we must understand that not all such things can have an answer, such as this kind of irregular things. As an ordinary investor, if we want to buy opportunistically, we may have to bear a greater risk, but in the face of the relative institutional investment, They may take less risk, because the risk they need to take is actually created by them. For most institutions, if they want to go up in the last stock, the probability of the stock's rise may be much greater than the probability of its decline. As for bitcoin, more than 110000 people burst their positions in the past 24 hours and 5.8 billion funds were swallowed, losing money in succession, in fact, I think the team is cutting leeks
in this paper, I would like to talk about some superficial understanding of this problem< First, we should fully understand the importance of developing computing ability
one of the aims of primary school mathematics teaching is to cultivate students' computational ability, and teachers must have enough understanding. Some teachers don't pay enough attention to the cultivation and improvement of students' computing ability, and they don't let students find the rules and interests of computing. This is a big obstacle to cultivate and improve students' computing ability, which must be removed. Computational ability is a necessary ability for students< Number and calculation are widely used in daily life, work and study. In the real world, from the perspective of mathematics, there are mainly three aspects: number, quantity and shape. However, measurement is inseparable from number and calculation, and the quantification of body size is inseparable from number and calculation. Therefore, number and calculation are the most basic tools for people to understand the objective world and the basic knowledge and skills that every citizen should master< Number and calculation are the basis for students to learn other mathematical knowledge and even other subjects. This part of the knowledge is not good, students can not enter the normal learning< Number and calculation play an important role in cultivating students' thinking ability. Mastering the process of number and calculation is also the process of cultivating students' abstract generalization ability. In this way, students also develop the ability of abstract generalization in the process of learning to master the knowledge of number and calculation
4. The teaching of number and calculation is concive to infiltrating the enlightenment ecation of dialectical materialism. The concept of number is graally formed and developed with the needs of human life and practice. When teachers want to teach the concept of number, the relationship between calculation method and calculation method, they can infiltrate the enlightenment ecation of dialectical materialism
Second, clarify the calculation theory and improve the teaching quality of calculation
in the teaching of calculation, teachers should pay attention to explain the principle of calculation and reveal the law of calculation, so that students can know what it is and why it is
1. The abstraction of arithmetic is a difficult point in primary school teaching. In teaching, we try to transform the abstraction into the concrete by means of visual demonstration, so as to make the arithmetic clear
2. Learn to operate with tools, explore and comprehend. Psychologists believe that thinking begins with action. To enable students to master mathematical knowledge and promote the development of thinking, it is necessary to build a bridge between image thinking and mathematical abstraction, and give full play to the role of learning tools. For example, if the students have difficulty in understanding the "method of making up ten" in addition within 20, we will ask them to come out with sticks to help them learn the calculation method of "making up ten" by playing with sticks
3. Contact with practice to deepen understanding. Using students' existing knowledge and experience to understand new knowledge is the main way to construct teaching knowledge structure. Properly using old knowledge in teaching, assimilating new knowledge through analogy, and realizing positive transfer of knowledge are concive to students' understanding of new knowledge and recognition of new knowledge structure. For example, when teaching the calculation method of decimal addition, we can use the rate relationship of RMB units that students are familiar with to explain the reason that decimal points must be aligned
4. Pay attention to perception and strengthen stimulation. For the parts that are easy to be ignored by students, we should pay attention to strengthen the stimulation intensity (such as emphasis on entering and leaving places, emphasis on the treatment of decimal points, etc.) to attract students' attention, leave students a clear and correct impression, and avoid and rece errors in future calculation
5. According to the characteristics that students are prone to illusion and thinking set, we should consciously differentiate and compare the similar concepts, rules and formulas, so as to promote the accurate differentiation of new and old knowledge
6. Practice in time to consolidate and improve. Carry out targeted exercises, strengthen the key points and difficulties in the calculation process, and strive to consolidate in class
7. Pay attention to feedback and correct in time. Timely feedback, find out the students' mistakes, help students analyze the reasons and correct the mistakes in time< Third, we should deal with the relationship between written and oral arithmetic
oral arithmetic is a kind of calculation method which can only calculate and get the results by thinking and language without any tools. It has the characteristics of fast and flexible
mental arithmetic is an important part of computing power. Oral calculation is the basis of written calculation and estimation. Both written calculation and estimation ability are developed on the basis of accurate and skilled oral calculation ability. Without a certain basis of oral calculation, the cultivation of written calculation and estimation ability becomes the water without source. In addition, mental arithmetic is widely used in daily life, proction and scientific research. Therefore, it is very important to insist on the training of oral arithmetic and listening arithmetic in teaching to improve students' computing ability
(1) oral arithmetic teaching must run through the whole process of primary school mathematics teaching. In the lower grades, basic oral arithmetic such as addition and subtraction within 20, multiplication within the table and division are arranged; The middle grade arranges some oral arithmetic which is the basis of written arithmetic and often used in daily life; In order to cultivate students' ability of using knowledge flexibly and their ability of oral calculation, senior students arrange some questions of using operation law to do oral calculation in exercises. Each teaching reference book puts forward the requirements for the oral arithmetic of this semester in stages. Teachers should make the cultivation of oral arithmetic ability to be implemented, and effectively improve students' oral arithmetic ability
(2) arrange oral calculation reasonably. In compulsory textbooks, the basic oral arithmetic, which is the basis of written arithmetic, is taught before written arithmetic, while some difficult but not the most basic ones are taught after written arithmetic, so as to further improve students' oral arithmetic ability. For example, addition and subtraction within 20 is an important foundation of addition and subtraction, and only oral arithmetic is taught. In addition and subtraction within 100, two digit addition, subtraction of one digit and integral tens, such as 27 + 6, 27 + 30, are the basis of both written and oral arithmetic. Therefore, this part of the content before the written calculation, only teaching oral calculation; It is more difficult for students to master double-digit plus or minus double-digit, so the first grade first teaches written arithmetic, and the second grade further requires oral arithmetic. In this way, students can not only learn written arithmetic, but also form a strong ability of oral arithmetic
(3) pay attention to the teaching of oral arithmetic. Oral examples should pay attention to the intuitive demonstration and operation to make students understand the calculation theory
(4) teach students oral arithmetic and develop their thinking. In order to improve students' ability of oral arithmetic, we should teach students correct methods of oral arithmetic. The methods are various, and we should guide students to choose the methods that they can easily understand and master. Never guide students to do oral arithmetic with the method of written arithmetic. Two digit addition: 28 + 37. I find that some students think like this: 8 + 7 = 15, indivial digit is 5, ten digit is 2 + 3 + 1 = 6, ten digit is 6. This is completely the idea of written calculation. In fact, you should think like this: 28 + 30 = 58, 58 + 7 = 75. You don't need to have a vertical pattern in your head
practice has proved that strengthening the training of oral arithmetic can not only improve the calculation level of students, but also develop their thinking ability< Fourth, encourage students to use simple algorithms to improve their ability and develop their thinking
simple calculation is a practical and effective method to improve students' calculation speed. Simple calculation often uses certain operation laws, such as addition calculation often uses addition exchange law, addition combination law, and multiplication exchange law, multiplication combination law, multiplication distribution law, etc. in multiplication calculation, some calculations are simplified from complex to easy. The study of simple calculation can not only improve the students' calculation speed, rece the calculation errors, but also help the development of students' thinking. Therefore, in the teaching process, teachers should strengthen the teaching of simple methods
in addition, let students remember some common data, which can simplify the calculation process and improve the calculation speed. I remember an ecator said that a person's memory before the age of 13 is the best. He can remember a lot of things at this stage. Although he doesn't know why and how, these things don't affect his memory. The unknown reasons of these knowledge will be solved with the growth of his age and the increase of his knowledge. Therefore, we should pay attention to the development of students' memory, especially before the age of 13. The content of calculation in middle and high grades is extensive, comprehensive and comprehensive. Some common operations are often encountered in real life. These operations have no specific rules of oral arithmetic, and must be solved by strengthening memory training. The main contents of my intensive training are as follows: 1) the square result of each number from 1 to 10 in the natural number; ② A method of oral calculation for the square result of two digit number of 5 on a digit; ③ Some specific calculation results, such as 125 × 8＝1000，25 × 4 = 100, 0.25 =, 0.75 =, 0.125 =, 0.375 =, 0.625 = etc. These special calculation results are frequently used in practice, homework and life. If we master and remember them skillfully, we can transform them into abilities, which play a good role in calculation and proce high efficiency< 5. Pay attention to cultivate the good habit of careful examination and calculation
the teaching of calculation also needs to train students to form the habit of careful examination and examination. Don't just shout "be careful!" to students, To teach methods, strict requirements, form habits, improve the accuracy of calculation
the new curriculum standard points out that we should pay attention to the cultivation of students' habit of inspection. Inspection is a good way, it can make people find their own mistakes in time and correct them in time. In the process of teaching, teachers should pay attention to strengthen the teaching of checking calculation, let students use different methods to test a problem, master the test method, and skillfully use this method to judge the correctness of the answers to similar problems
six relations between addition, subtraction, multiplication and division are often used in checking. The estimation is often based on the variation of proct and quotient. For example: according to the multiplier & gt; 1, proct & gt; Multiplicand (except 0); Multiplier = 1, proct = multiplicand; If the multiplier is less than 1, the proct is less than the multiplicand (except 0), you can judge which of the following questions is greater than the multiplicand, which is less than the multiplicand, and which is equal to the multiplicand: 8 × 、 nine × 、 one × 2、0.9 × 16、5 × 1、3 × 、 × 1 According to divisor > 1, quotient < divisor (except 0); Divisor = 1, quotient = dividend; If the divisor is less than 1, the quotient is greater than the divisor (except 0), it can be judged without calculation ÷ 14、8 ÷ 1 、21 ÷ 、 ÷ 7、2 ÷ 1、0.45 ÷ Is the quotient greater than the divisor, less than the divisor, or equal to the divisor< Sixth, enrich learning activities, be happy with teaching and learning, and stimulate students' interest
the calculation problem is composed of numbers and abstract operation symbols, which makes students easily feel irritable and tired. Therefore, teachers should
First of all, in my opinion, this problem is actually equivalent to a pseudo proposition. After the collapse of bitcoin, nearly 40 billion of funds did suffer losses. However, we know that bitcoin itself is the same as the stock market. Even if there is a decline, there will also be a surge. Therefore, this is only a short-term market fluctuation. But we can't look at bitcoin from the perspective of stocks. After all, bitcoin has fallen to the bottom before. Today, I'd like to discuss with you what losses bitcoin will cause to investors{ RRRRR}
Third, how to treat the investment of bitcoin
I have a suggestion under all the answers about bitcoin, that is, if you are an ordinary family, do not invest in bitcoin, because bitcoin itself is like stocks, but it does not conform to the objective economic laws of our market. Its scarcity, privacy and free mobility are not valuable in themselves