Internet facilitates our life and brings us a lot of information. Although this is a virtual space, its advantages of convenience, quickness and flexibility expand our knowledge and give us a space to travel. Its appearance has changed people's traditional way of thinking and given us great help in life. Sitting at home, you can browse a lot of rich books in online libraries; You can receive a letter from Wan Li in a few seconds, and you can get all kinds of detailed information you want in the shortest time. Learn more knowledge through the distance education network run by various schools and so on. It is precisely because of these advantages of the Internet that it is favored by more and more teenagers. }
However, many people think that the disadvantages of surfing the Internet outweigh the advantages. It is true that the internet is a complex thing, and its interior is full of all kinds of information, such as reaction, violence and pornography. There are too many such mixed things, and our middle school students have limited autonomy, so it is really difficult to resist the amazing attraction of the Internet. }
The attraction of the Internet is endless, but people's self-control is limited. According to the incomplete statistics of UNESCO, the United States accounts for 20% of the total number of middle school students who surf the Internet for the main purpose of learning, Britain accounts for 15%, and China only accounts for 2%. This striking contrast properly shows that the self-control of middle school students is not as attractive as the Internet. It's like a newborn baby. After all, it needs careful support. Under the correct education and guidance, it will grow up, build the country and make contributions. But if so, it will inhibit students from surfing the Internet. Isn't it just killing the baby in the cradle? A lot of middle school students surf the internet, and some of them are adversely affected, which just shows that whether they are adversely affected depends on their own quality and will. As the saying goes, "people are not afraid of the oblique shadow." As long as we have the will not to approach this addictive network communication, we will naturally not be affected by it. }
The difference between advantages and disadvantages lies in how you use it and how to arrange your time reasonably. If it is used to play video games all day and night, it must be a disadvantage. If used for learning: the advantages outweigh the disadvantages. If used for chatting and games, the disadvantages outweigh the advantages. }
Network advantage: (1) You can get the corresponding information in time.
2 1 century belongs to the era of computer and internet. With the development of the times and society, the Internet is playing an increasingly important role in people's lives. People use all kinds of internet tools, including mobile phones and PCs. Where there is Internet, people can get the relevant knowledge and information they need anytime and anywhere. For example, students can use the Internet to gain wider extracurricular knowledge and broaden their horizons. Office workers can get what they need and have a panoramic view of the world with the click of a mouse.
(2) It can enrich people's spare time life.
With the gradual prosperity of people's material life, people's pursuit of spiritual world is becoming more and more important. At this time, the Internet, a living thing, played a very important role. For example, the development of the Internet has led to the gradual decline of paper media, and with the gradual rise of electronic media, people can use mobile phones and PCs to read online in their leisure time, enriching people's spiritual world anytime and anywhere, and people can also use the Internet to watch videos, listen to music and play games to relax people's mood.
(3) It can promote the individualized development of people.
With the development of the Internet, major dating and chatting websites have become eye-catching websites. It can be said that people can't live without them all the time. People of all ages are using different social and chat tools, including WeChat, QQ, Weibo, blog and so on. People can express their opinions anytime and anywhere and write something on them, including daily life, travel, novels and so on, so as to exercise their writing, photography and so on.
(4) It can promote economic development.
"internet plus" is the common pursuit of major Internet companies. 2065438+0515129 October, the Fifth Plenary Session of the 18th China Committee pointed out: implement the "internet plus" action plan and develop the sharing economy, and "internet plus".
Disadvantages of the network:
(1) will do harm to people's privacy.
The internet is like a double-edged sword, which brings convenience and comfort to people, but also brings some adverse effects to people's lives and all aspects. Nowadays, with the rapid development of the Internet, all aspects of people are closely related to the Internet. It is precisely because of this that some network "experts" use these things to steal people's privacy secrets. For example, people use online payment tools to buy what they need, and their bank card numbers will be tied to them. In this way, criminals
(2) It will have a negative impact on the physical and mental health of teenagers.
Proper use of the Internet will have an impact on people's health. On the contrary, improper or excessive use of the Internet will have an impact on people's health. Now online games are highly developed, and some teenagers are the main force of online games. Teenagers are in an important period of the development of outlook on life and values, and their control ability is poor. Therefore, if they can't control it well, they will become addicted and have a bad influence on their health and study.
The expansion of network knowledge;
Introduction:
A network consists of nodes and connections, representing many objects and their interconnections. Mathematically, the network is a graph, which is generally considered as a weighted graph. In addition to the mathematical definition, the network also has a specific physical meaning, that is, the network is a model abstracted from the same type of practical problems. In the computer field, the network is a virtual platform for information transmission, reception and sharing. Through it, the information of various points, surfaces and bodies is linked together, so as to realize the sharing of these resources. Internet is the most important invention in the history of human development, which has promoted the development of science and technology and human society.
Before 1999, people generally thought that the network structure was random. However, people didn't realize the complexity of the network until Barabasi and Watts discovered the scale-free and small-world characteristics of the network in 1999 and published their findings in the world-famous magazines Science and Nature respectively.
With the help of software tools such as text reading, picture viewing, audio and video playing, downloading and transmission, and game chatting, the network will bring people extremely rich life and beautiful enjoyment from the aspects of text, pictures, sound and video.
Transmission medium:
Wired networks, optical fiber networks and wireless networks usually use a single transmission medium, while metropolitan area networks and wide area networks use multiple transmission media.
(1) Classification by communication mode:
Point-to-point transmission network
(2) According to the purpose of network use:
* * * Shared resource networks, data processing networks and data transmission networks have different purposes.
(3) Classification by service mode:
Client/server network, peer-to-peer network
With the advent of the information age, the wave of digital information revolution is completely changing people's work and lifestyle. The digital revolution calls for new technologies, and the Internet is one of its development products. With the rapid development of network technology, the Internet has penetrated into thousands of households.
Internet is a virtual space. Its advantages of convenience, quickness and flexibility expand our knowledge and give us space to travel. Its appearance has changed our traditional way of thinking and given us great help in life. We can browse many books on the Internet while sitting at home, and we can receive a letter from Wan Li in a few minutes, and we can get all the information we want to know in the shortest time. We can learn more through the distance education network.
The Internet is like a double-edged sword, which brings us convenience, but also brings us many hidden dangers. All kinds of dark shadows are slowly coming towards us. Among them, online dating, illegal websites and online games are like shells wrapped in candy.
All kinds of illegal websites spread pornographic violence under the condition of imperfect network management, which is hard to prevent and has a great impact on our physical and mental health.
There are also various online games to attract curious secondary vocational students. Many students skip classes and go to Internet cafes to play legends, dreams, bubble halls and chat about QQ. Some even stay up all night, sleeping in internet cafes and eating in internet cafes. This not only damages our health, but also wastes our parents' precious time, money and sweat, disappointing our parents' expectations and even delaying our excellent youth. There are few cases caused by online games in society, such as "A mother in Wuhan is looking for a child in a thousand miles" and "A child in Guangzhou killed his grandfather by playing games" ... These cases warn us that secondary vocational school students should play less or not play online games, and they can use some spare time to study their majors, develop their potential and develop their intelligence. However, we should not completely exclude the network, nor should we give up the benefits of the network, which requires us to choose the essence of the network and abandon its dross.
The world chose us. Because it needs beauty, we choose the world because we want to realize our own value. In the long journey of life, the running water falls in the choice and the sun rises in the choice. Friends, please seize the moment you choose, let us choose the favorable side of the network with confidence and determination, and choose our bright future.
Please be careful!
Walking on the street, we often hear many adults express their feelings: what should children do if they spend all day in internet cafes? This problem plagues many families and makes many primary and middle school students go astray and neglect their studies. Whenever I pass by the doors of those internet cafes, I will hesitate and think a lot.
Nowadays, there are more and more Internet cafes making money in the society, which are becoming more and more prosperous. Some unscrupulous businessmen even find a hidden place to operate without a business license. No matter who you are or whether you are an adult, they will receive you as long as you have money. This leads many primary and middle school students to be infatuated with Internet cafes, which not only affects their studies, but also harms their health. This is really a great sorrow.
Because primary and secondary school students are in the stage of growth and development, their ability to distinguish right from wrong is limited. The virtualization of the network makes them feel novel and confused about some deceptive contents and pictures on the network. In addition, infatuation with Internet cafes requires consumption. Primary and secondary school students are consumers. For people without financial resources, they often rack their brains for lack of money to surf the internet, and may steal or rob, thus embarking on the road of crime. It is not uncommon for other children to make up lies between their families and teachers in order to surf the Internet. This kind of thing happened around me. He is a junior high school student. He usually gets good grades and is obedient ... but with the help of other students, he can't resist the temptation of the internet and walks into the internet cafe. Once he went and didn't come home for two days and two nights. My parents and teachers looked everywhere and finally found him in the Internet cafe. He has been exhausted at the computer desk, pale. When I got home, I was beaten by my parents and went out to play for two days. Later, under the persuasion of the teacher and the patient guidance of his parents, he finally turned over a new leaf. However, more is to walk into the Internet cafe, unable to extricate themselves, harming others and themselves.
Here, I loudly appeal: students, we must take the Internet seriously, have a more comprehensive understanding of the Internet, learn to use the Internet correctly, and achieve "healthy Internet access and stay away from darkness!" Let's create a healthy, lively, warm and lovely family.
On the one hand, the advantages and disadvantages of the network bring convenience to people, on the other hand, it also makes people addicted to the network, destroys health and tempts people to commit crimes.
Good morning, judges, teachers and students, the pros and cons of online debate. I am very happy to have a collision and exchange of ideas with my opponent. Internet is becoming a part of our life, and we students are no exception, but it is also a double-edged sword, with both advantages and disadvantages. We believe that the advantages of surfing the Internet for middle school students outweigh the disadvantages for the following reasons:
First, students have a strong thirst for knowledge, which is the best time to learn. Internet can open students' horizons and expand their knowledge. Surfing the Internet can keep abreast of current events and obtain all kinds of latest knowledge and information, which has a good guiding role in future study and life. Surfing the Internet can enrich your mind. As long as you pay attention, you can learn a lot of knowledge that you can't learn in school and expand your knowledge. Online distance education will bring endless benefits to students. Students can fly freely in the website with rich content and famous teachers sitting in the classroom. If they surf the internet, they can choose any paper and typical topic. With a click of the mouse, you can see the whole world. Therefore, the network is conducive to students' learning and growth.
Second, students are in the process of socialization. They like to make friends and are eager for friendship. The Internet has opened a door for students, making it easy for them to find like-minded friends. The ancient dream of "being neighbors with the sky and knowing each other as friends" has come true through the Internet today. We can meet friends from all over the world and even foreign friends online, which greatly expands our communication and makes our friends all over the world. It is also helpful for students to understand different worlds and different lives. In the past, children's contact with the outside world was restricted by various objective conditions. Now online, there is no geographical and background restrictions, you can find like-minded friends.
Third, students like innovation and uniqueness, and the Internet can promote the development of students' personality. "Just a classmate and teenager, in his prime, giving directions, inspiring words, and the pollution of Wan Huhou", students can express their views and opinions on various issues on various BBS, and learn to look at problems dialectically in the debate with others. Students can also improve their hobbies and bring their creativity into play by surfing the Internet. Blogging, sending photos, making flash and editing videos have all become the hobbies of some students, and their creativity has been brought into full play. We read the same textbooks and tested the same papers at school, but our students are different, and the Internet just makes up for this deficiency. You can know your favorite information and learn your favorite content online, which satisfies the individualized development of middle school students.
2 1 century will be the era of computer network, and today's students will be the pillars of the future society. Understanding and mastering computer network knowledge is the most powerful weapon to break through the future information age. The knowledge we gain on the Internet today is the creativity of tomorrow. Therefore, I reiterate our view that the advantages of students surfing the Internet outweigh the disadvantages.
We think that the Internet and TV are closely related to our study. We can check information online, shop online, communicate instantly (such as QQ chat) and play games to adjust our mood after studying.
This answer is purely personal, please don't copy it!
What are the advantages and disadvantages of the Internet? The Internet extends in all directions. You can meet many people online. Native, foreign, China, foreign, of course, there will be good people and bad people. Online, there are netizens, exchange needed goods, contact each other, provide opinions and suggestions to each other, and establish good online friendship. Is this Lee? Still a disadvantage? Indulge in online chatting all day, don't attend classes, do nothing, just surf the internet and chat with people on the other side of the network for a long time, and may eventually go astray. Is this Lee? Is it a disadvantage? Everyone says that the internet is wonderful, it can instantly present what you want to know; You can search an old magazine that you have been looking for but can't find; You can search some cutting-edge knowledge that has not appeared in books and newspapers. You can use it to enrich yourself, and really reach the state of knowing what is happening in the world without going out, and reaching the state of knowing the cutting-edge science with a computer. Is this Lee? Still a disadvantage? There are also people who have excellent network knowledge and use the network to make a fortune, which is ill-gotten gains. Of course, the use here is not the use I mentioned earlier, but also a use, but a destructive use. So it's good? Is it a disadvantage? In fact, there is no difference between the advantages and disadvantages of the Internet, and the advantages and disadvantages lie in the people who surf the Internet. After learning from Ma Zhe, I know that people should give full play to their initiative, and so should surfing the Internet. Sometimes, there is a thin line between advantages and disadvantages. It depends on how people who surf the internet grasp and how to give full play to their initiative. Nowadays, it is a trend for college students to surf the Internet, which can also be said to be an inevitable situation. The pros and cons are still said, but how to grasp the pros and cons is not in your own hands?
What do you think of the Internet? Advantages and disadvantages? There are advantages and disadvantages. Actually, it's not just surfing the internet. Anything new has its advantages and disadvantages. It depends on how you handle it yourself. The intention of the Internet is good, but if you indulge in it, there will be some problems. Everything has advantages and disadvantages.
Please accept it, thank you!
Advantages and disadvantages of English composition network Now many students in my class like to surf the Internet in their spare time. I think Inter Milan can bring us both benefits and disadvantages.
For example, if I have difficulty in studying, I can look up more useful information online. I can make more friends on it. Some of my classmates say that they feel happy when they talk to more friends who have many similar hobbies.
However, Inter Milan can create some problems at the same time. If you spend too much time on it, you will become lazy and can't concentrate on your studies. If you think you can't live without Inter, it's even worse.
So we must be careful when using the Internet.
Now, many of my classmates like surfing the Internet in their spare time. I think the Internet has brought us both advantages and disadvantages.
For example, if I have difficulties in my study, I can search some helpful information on the Internet. I can make more friends online. Some of my classmates said that they would feel very happy when they found some friends with considerable interest to chat with.
However, the Internet can also cause some problems. If you spend too much time on it, you will become lazy and can't concentrate on your studies. If you think you can't live without it, it's even worse, so we must be careful when using the Internet.