TV is indispensable in life. We can watch the news and learn about things at home and abroad; You can watch cartoons and relax; You can also not go to the scene to watch programs and performances; For example, when the mascot of the Olympic Games is announced, you can watch the broadcast at home.
Computers are more widely used in all walks of life. When we send a letter to Brazil in Haining, it only takes a few seconds for the other party to receive it. We can chat and play games with friends and relatives all over the world on the Internet. You can read news, watch movies and listen to music online. You can listen to the teacher's class, find information, and do shopping, medical treatment and first aid at home ...
Science and technology have deeply influenced our daily life and played an indispensable role in economic and social development. Especially since the 21th century, with the rapid development of science and technology, especially computer network technology and electronic information technology, expensive luxuries such as mobile phones and computers have entered the homes of ordinary people and become necessities of our lives.
Of course, the development of science and technology has also caused some negative effects, but these effects should have been very small, but human beings are like a magnifying glass, magnifying these negative effects. If humans can consciously reuse plastic bags instead of littering them, will it cause such serious white pollution? If mankind can exploit resources exhaustively, will it cause the current shortage of resources? If humans can save water, factories will not discharge sewage illegally.
1: environmental pollution. This is the most direct and conspicuous disadvantage.
2: species extinction is accelerating. This is caused by environmental pollution and human hunting. It also belongs to the disadvantage of scientific and technological development.
3: personal safety is increasingly insecure. Now there are tens of thousands of criminal acts every day on average. Most of their criminal means are related to the current new technology. Especially gun crimes, It is even more difficult for ordinary people to prevent. From the Second World War, we can already see that with the development of science and technology, the damage and losses caused by the current war are far from being comparable. It may even lead to the fate of human extinction.
4. The physical quality of human beings is not as good as before. With the development of science and technology, the emergence of various means of transportation such as gas cars, trains and airplanes has greatly changed human daily life. Human beings are no longer always dependent on their own legs, so the physical quality of human beings can't be compared with before. In the past, Xiang Yu's "pulling the mountains and rivers to cover the air" is impossible to appear again in today's society. If this situation continues to develop, it may make people's limbs shrink and make human beings appear in a new form.
5. Various emerging germs continue to appear. The lethality of many germs has far exceeded the destructive power of previous germs. This is because the rapid development of medical science and technology has accelerated the variation of viruses, so that the development speed of science and technology has failed to keep up with the variation speed of viruses. Perhaps one day mankind will perish from a major plague. With the development of economy, the acceleration of people's living pace and the improvement of living standards, the amount of plastic used by each new person is increasing day by day. In 1996, the consumption of plastic packaging in China reached 2.43 million tons, with an average annual growth rate of more than 21%, especially the plastic waste in the garbage of cities, major traffic routes and tourist attractions increased rapidly. According to the survey, the annual output of domestic waste in Beijing has reached 3 million tons, of which waste plastics account for about 3%, with an annual growth rate of 48%. The plastic content of garbage in coastal cities is higher, reaching 8-11%. The proportion of these waste plastics in garbage is more than one-third by volume, which greatly increases the difficulty and cost of garbage disposal.