kena "chan" by boss

Yesterday (12/6/08) I took an emergency leave to make an appointment with the doctor, therefore I didn’t go to office. Alhtough I didn’t back office, i also can get some info about me from my colleage. My boss gets in office and checks the things I done (interim valuation). He found that I got make some mistaken on the interim valuation that makes the whole things cannot release to client. After that, he says with my colleage that I still thinking like a “student”… After I hear this, I was think, in fact I’m still a student, because I havent graduated yet… I know what he expects we become like our senior which has been work with him about 5 years, but, can we be like her in a short period?? I cannot say that he pushes us so much but I don’t like him treat me like this! Every time what he talk to me and what he talk to my senior is different! For example, he says that figure is ok already, I can proceed it… But what he talk with my senior is slighty different! He asks my senior help me to reduce the figure to that figure that he want… if really like this, then why he don’t want tell me himself and want my senior told me?? I wanna know why, am I done anything mistake that make him don’t wan straight aways told me what he want? Really tired to work to a boss like this, because I really don’t understand what he is thinking and what he will do. He says my mind still thinking like a student, every minor things also wana ask his decision then only I proceed it, but, isnt got any wrong on me?? Or I need to be more independent while I’m working?? Haiz… fan la…