I see, that is why the do not return to me the photocopy that I sent to them the first time "If we suspect fraudulent documents are submitted, they will not be returned."
also I will submit my social security account that shows that I am working untill now, plus the certificate of beginning of operations ( the beginning of my own business) as a proof that I am not searching for a job there but better studies on the field of civil engineer. I hope those will help to satisfie the officer.
Something else, if they refused me study visa again, can I travel to Canada, begin my studies and reapply from Canada?
and by the way, thanks you all, you help me a lot!!!!