Is it me?

Today, as usual I have my class at night. I went to class and did what SHE asked us to bring, newspaper. Today task is to search for an article and write an outline for our assignment. and so we did. Eventually, things happen after this shock me for the day! >.<

SHE passed us our exam paper and discuss on the answer. Things went on and on until we came to this question. The question want us to construct a complex sentence with two simple sentences. The day of exam, I asked HER whether if we could exchange the sentences position, which mean the bottom to be on top and vice-versa. SHE say CAN'T! okay~ I listened! Today, the answer she gave was the answer I wanted to write! and I asked HER why? (with nice and low tone, of course) and here SHE goes:-

HER : This is because that day THEY (the person who set the question) say cannot, and then they say can already.
Me : Well, why that day you tell me cannot and now can, why they say cannot then sudden change can? (again, my aim is to ask ONLY!, and with low and good tone)
HER : You should go ask the person who set the question.
Me : Haiz, now I lose 1 marks jor~ (sad ma~ )
HER : (turn around and say) If you want to get more marks, you should study more!
Me : I did! I did! (with no intention on challenging! I swear!)
HER : Don't argue with me! (start to raise HER voice)
Me : I just ask and want to know.
HER : .......(looks angry) Okay! I'm not going to discuss anymore! (turn around and packed) Give back all the paper!

Everyone was shocked! at least I was. for the second, I was thinking what I did wrong. and then I went to her and say SORRY to HER! SHE don't give a DAMN! gosh~

and then she goes off and the class ended half an hour earlier~ =.=||

Maybe I was wrong for so called "challenging" her, but she shouldn't be like this as a tutor or lecturer. I did not say that she was completely wrong but respect me as a student also~ =.=||

No more comment~ =.=|| off~