Prosecutors in a Queens court yesterday began making the case against newly sworn in State Senator Hiram Monserrate on charges of second-degree assault for last month's slashing of his girlfriend, Karla Giraldo. A judge refused to lift the order of protection separating the two and did not allow Giraldo to speak before the court. Monserrate withdrew his previous waiver of his right to a speedy trial, so the case can now be brought before a grand jury.



