题目内容：

Nowadays, many teenagers spend too many time on computers. The number of students who come to school in the morning are already completely exhausting. The cause of this is staying late at night playing computer games and chat with their friends online. Most of them don’t realize just how damaging to their healthy this is, let alone the effect it has on their grades. I recently read an article about the damage that playing computer games are doing to kids. The article claimed for that lots of the games kids play are extremely harmful. It said that at best they are turning teens into dull people which have no social life and at worst into potential killer!