Refer:

Modern society is constantly developing, and the appearance of the Internet has opened up a whole new era of access and sharing of information. This brings a tremendous reform and benefits to all humanity. In our lives there are innumerable questions that need to be answered, and the Internet was born as a useful tool to help us solve those questions. Searching for information in the past has cost humanity a lot of time and effort, and not everyone had patience to turn the pages one by one to find the information they needed. However, our lives have changed tremendously since the arrival of the Internet, and the search of general information on the Internet has not consumed us much more than mouse clicks and keyboard typing. This is where most basic and specialist information is gathered from the majority of occupations and fields in our life. There are countless websites that contain useful information for research and study, and Wikipedia is now considered to be the most complete and accurate encyclopedia. Searching the Internet is simple, but we should also be careful in getting that information. Not all knowledge on the Internet is accurate and complete, so we need to compare information from many different sources before actually using any of them for our purposes. The Internet is an infinite ocean of knowledge, and we can learn countless things if we know how to use it properly.

For a long time, television has been regarded as a saving means of entertainment and acquiring useful knowledge. However, besides the benefits mentioned above, it also brings a lot of harm because of the following reasons. First, watching TV takes up a lot of our time. I do not deny the benefits such as entertainment or education that it brings. However, instead of spending all the day just watching TV, we can do some useful works such as doing homework, helping mother to do housework. Through that, we can gather for ourselves a lot of soft skills and become closer to the other. Second, sitting too close to the TV screen will make harm affect on our health. Studies have shown that sitting near television will shorten our vision, in addition increase the risk of cardiovascular diseases and degeneration of the neck vertebrae ... These are the disadvantages that no one expects. Therefore, let's limit the amount of time spending watching TV and save that time doing other useful things.

Loi ich:

Television is very important for our lives so most families have televisions. It provides us with information and entertainment.
What would you do after a hard day at school or at work and you want to entertaining. It simple, just turn on your TV. Music channel, comedy channel or cartoon channel... is your choice, just pick a channel. And not only entertaining, TV can also help you update the news from all over the world in the end of the day
We stay at home and know what is happens all over the world. You can watch you favourite  programs and game shows you . Someone spends 3 or 4 hours sitting in front of television.
There are too much advertisements on television which makes us tired. Anyway, TV is a wonderful invention. It is a cheapest kind of entertainment for everybody.

Tac hai:

For a long time, television has been regarded as a saving means of entertainment and acquiring useful knowledge. However, besides the benefits mentioned above, it also brings a lot of harm because of the following reasons. First, watching TV takes up a lot of our time. I do not deny the benefits such as entertainment or education that it brings. However, instead of spending all the day just watching TV, we can do some useful works such as doing homework, helping mother to do housework. Through that, we can gather for ourselves a lot of soft skills and become closer to the other. Second, sitting too close to the TV screen will make harm affect on our health. Studies have shown that sitting near television will shorten our vision, in addition increase the risk of cardiovascular diseases and degeneration of the neck vertebrae ... These are the disadvantages that no one expects. Therefore, let's limit the amount of time spending watching TV and save that time doing other useful things.

Cảm ơn các bạn nhé! Mình bảo đừng coppy mạng cơ mà các bạn làm bài về tác hại vẫn giống nhau đấy!

TK

In a rapidly changing technological world, human easily access to global knowledge through Internet. It brings people both advantages and disadvantages. First, it creates a wider environment for building new relationship. It cannot be denied that Internet supplies a wide range of social network and app for people to make more friends. Talking to each other or even seeing their face is popular in modern society and all you have to do is a smartphone connected to wi-fi or 3G. Therefore, the Internet saves our time, health and even money when not having to pay for a call. Second, Internet provides large piece of information and knowledge of all subjects. With a click or some searching, users have different source of document and helpful information. For instance, instead of reading newspaper, it is more comfortable to read and comment online not only news, essay but also books and other kind of writings. They are all uploaded on the Internet, user can download it for several purposes. Third, applying internet into all aspect of life is helpful in modern society. A good example is that instead of going to the office, officer can stay at home and control the work through a laptop. Many group and organization make appointments online and they even do a business by the internet.

làm từ thiện mà có tác hại hả?

hại ở chỗ là vẫn còn nhiều người lợi dụng việc làm từ thiện để câu view  , câu like chứ k phải lm từ tâm 

In modern times, our continued advance in technology has led to the explosion of many useful electronic devices, one of which is mobile phone. It has become a vital part of people’s life on account of the huge benefits it brings. To begin with, mobile phone is a source of information. With Internet access available anywhere and at any time, users can search for the latest news and keep themselves informed of events around the world. Not only providing information, it also acts as a useful device for storage. Photos, videos, records or texts can all be stored in your phone. For instance, when you attend a lecture but seem to be not quick enough to take note everything, it is possible to record it and play back several times. More than that, the important function making it increasingly appealing nowadays is a source of entertainment, offering people with a wide range of activities in the free time such as playing games, listening to music or reading e-books. Last but not least, mobile phone has been upgraded to become a multifunctional device, which can come in handy in different situations. Many cell phones often come with a GPS and a Map application, allowing users to identify their location and get the right way to the place they want. To sum up, mobile phone is undoubtedly one of the greatest inventions, which not only meet the demand for communication, information exchange and entertainment but also offers numerous useful functions that make our life easier.

Refer:

Computer currently helps me much in my study. First of all, it helps me format my lessons effectively. I often type my lessons on the computer and format them to make them attractive to eyes so that I may learn them by heart quickly and review them conveniently. Next, computer helps me keep my materials safely for future use. Today, beside the hard drive, I often bring my USB’s with me and use them to save all what I want at any time and place. Moreover, I often updatemy materials on the screen. This enables me to create clear and tidy versions of materials and save up much time for other activities. On the other hand, computer is the most helpful friend helping me learn information and knowledge on the internet.Thanks to computer, I often access the internet and learn many things. Computer has made my understanding better day by day and become indispensable for my study.

The computer is one of the great inventions of man that changed the world. Computers with the convenience and connectivity that allow people to work and play online. Not only that, computers participate in almost all areas of life and improve work efficiency and improve people’s quality of life. The computer consists of the basic parts: CPU, monitor, and keyboard. Modern improvements make computers more and more compact and handy to take with you wherever you go.

    The world is currently very developed, which means that technology is very evolving, especially smartphone. And it brings a lot of benefits, I of course agree. Because it's so useful. Smartphone works remotely, even when you're in another part of the world. You can communicate verbally, video, audio and exchange other media. All websites, applications and software have been created to help users socialize. Social media, texting, texting, laptops, tablets, and cell phones mean no one needs to feel isolated in the digital world. Users can be regularly updated with news about local events and social developments. We can also learn through technology. Anyone with access to the internet today can access a huge amount of the world's knowledge through the web. Alternatively, lessons and courses can now be offered virtually online. Online social media or playing computer and mobile games is becoming more and more popular. Traditional media also developed, as television and broadcasting were digitized along with radio. It has many benefits, but it also has harmful effects. Nowadays, there are a lot of young people who are interacting too much with internet devices, and can easily watch bad programs, programs like those are not good for them. However, Smartphone is also a lot of benefits, is an important part of our life

1. Bảo quản vắc xin

Đây là một yếu tố đặt lên hàng đầu bởi vắc xin luôn đòi hỏi phải bảo quản ở một điều kiện nghiêm ngặt, đặc biệt là các loại vắc xin nhược độc. Mỗi loại vắc xin đều có một khoảng nhiệt độ bảo quản thích hợp, đối với các loại vắc xin virus ở nhiệt độ từ 2 – 8°C, các loại vắc xin vi khuẩn từ 5 – 150C. Nếu nhiệt độ bảo quản vắc-xin nằm ngoài khoảng nhiệt độ bảo quản, hoặc để vắc xin bảo quản ở ngăn đá sẽ làm mất tác dụng của vắc xin.

Ngoài ra, bà con cũng cần chú ý việc bảo quản vắc xin khi vận chuyển, nếu ở xa nơi bán vắc xin thì khi đi mua nhất thiết có hộp xốp, phích đá để bảo quản; nếu mua gần thì bảo quản bằng túi nilông tối màu có giấy bọc. Khi vận chuyển vắc xin cần bao gói kỹ, tránh hiện tượng va đập, tránh được vắc xin tiếp xúc trực tiếp với đá lạnh, đặc biệt không cho ánh nắng trực tiếp chiếu vào vắc xin để đảm bảo chất lượng và hiệu quả phòng bệnh của vắc xin.

2. Sử dụng vắc xin

Nếu khâu bảo quản tốt song chúng ta sử dụng vắc xin không đúng kỹ thuật thì hiệu quả cũng sẽ thấp. Khi sử dụng vắc xin chúng ta cần chú ý các yếu tố sau:

- Cần đọc kỹ hướng dẫn sử dụng vắc xin trước khi dùng, nếu không rõ thì hỏi thêm ý kiến của bác sĩ thú y.

- Khi dùng phải kiểm tra lọ vắc xin bằng mắt thường xem màu sắc, độ vẩn có gì khác thường (ví dụ: không dùng vắc xin bị đổi màu, vẩn đục).

- Không được tiêm vắc xin cho động vật đang mắc bệnh, nghi mắc bệnh, động vật quá gầy yếu, quá non, con mẹ mới đẻ, động vật mới thiến chưa lành vết thương, những con mang thai ở kỳ cuối.

- Dùng vắc xin đúng liều lượng, đúng vị trí, đúng lứa tuổi.

- Xi lanh, kim tiêm phải đảm bảo tiệt trùng. Biện pháp tốt nhất là luộc sôi hoặc hấp, để nguội dụng cụ trước khi sử dụng (chú ý không nên dùng cồn để sát trùng dụng cụ).

- Pha vắc xin đúng chỉ dẫn, trước khi sử dụng phải lắc kỹ lọ vắc xin.

- Vắc xin pha xong dùng ngay, không để quá 2-3 giờ sau khi pha, không cầm lâu trong tay; nếu thừa phải hủy, không được dùng cho ngày hôm sau; không vứt bừa bãi chai lọ, kim tiêm.

- Sau khi tiêm vắc xin, cần theo dõi vật nuôi để kịp thời phát hiện các trường hợp gia súc, gia cầm phản ứng sau khi tiêm để có biện pháp can thiệp.

3. Một số bệnh cần chú ý tiêm phòng cho vật nuôi

- Đối với trâu bò: tiêm phòng bệnh tụ huyết trùng, lở mồm long móng.

- Đối với lợn: cần được tiêm phòng đầy đủ 04 bệnh đỏ (tụ huyết trùng, phó thương hàn, đóng dấu lợn, dịch tả lợn), lở mồm long móng.

- Đối với đàn gà: tiêm vắc xin Newcastle, Gumboro, Cúm gia cầm.

- Đối với đàn thủy cầm: tiêm Cúm gia cầm, Dịch tả vịt.

Current students all have a phone. It is very useful in many ways such as: watching movies, contacting families when necessary, reading newspapers online without spending money, playing games or even talking, texting with friends when free time, shooting Beautiful photos to make memories with friends or family. But everything has two sides: the good and the bad. The phone also has a bad side. It makes us neglect studying, not hanging out with friends and sometimes even phone calls that make us not pay attention to listening to lectures, not concentrating, learning slipping. And the worst thing is that it makes us addicted. Always hold the phone with you when you eat, when you go to bed when you go to bed, when you go out and when you go to the toilet. If we use them, we have to balance learning, playing with friends, family, doing chores with the phone properly.