use computer after work helps us entertainment and alleviates fatigue, stress. What we do not know can use a computer to investigate. We also can shop faster and cheaper goods from computers. Can play games, listen to music, watch movies ... However, the computer also has its limitations. Computer users will be affected long health. Which makes people waste time on useless things and become lazy bieng.Nhieu who will have the habit of virtual life, not in harmony with the community. Therefore, we must learn to use the computer for proper purposes, should not sit for too long and find something to suit their own age
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