Эссе по британскому на тему Computers : a blessing or a

Computers are a useful thing, but this good thing also has disadvantages.
What is useful for computers? With the help of this device, we can find information about every corner of our large planet. The computer is also a good assistant in study or work. At the computer, we can spend our leisure time and just play. Not everything is as good as it seems to us.
Doctors recommend us to sit at the computer for an hour or two hours, no more. This is due to the fact that our vision begins to deteriorate, if the eyes do not give a rest. The computer also causes significant harm to our posture: when you are sitting at the computer, you do not keep your back as needed.
There are also rules that tell Us to sit at the computer correctly