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Albert Einstein was bron in Germany in 1879.he started instered in Compass whe he was a little boy .he likes doing some small research by himself .he study high maths in high scool.when he finish the collage ,he moved to swiss and published the photoelectric effect speech.he became the most famous sincentist in the world . At last ,he died in 1955.we lost a greatest scientist in the world.we miss him for ever.

With the development of the science and technology,the computer has been becoing the necessity for people in the 21st Century.Following,network is of close link with our life,bringing us incomparable convenience on our life and work. Through the network,we can search for useful datas and get to know the current events.When you play computer games after a long-time work,it can relieve your pressure and make you feel relaxed.Besides,playing online games is not all bad,for it can fulfil students' entertaining requests as well as practise their response ability. However,there still exists some disadvantages in the network.The radiation from the computer will do harm to people's health if you keep on watching the computer for a long time.And short sight may caused by it for your eyes stay tense.At present,there are too many games on the Internet,but some of them are not of good quality even contain some unhealthy content like violence and so on.Duo to the lack of recognizing society and self-protection awareness,some students get addicted in the games and online dating.In fact,network is not that horrible,as long as we know more about it,it will become our right hand on our studies.Let's build a clean network world together

r his last hours. I speak, of course, of free men who have a choice, not condemned