nowadadys,many people lives in a tired world .they get up early to work .and go home late .it seems that they work full of daybut what achievementdo they have ?maybe they do not think of it yet !indeed,this probiem is difficult to say .because the morden people lives up in a fast world ,what they care about is to find the way of survive !but we as a people ,wo do not only think of live but also .