题目

     Since finishing my studies at Harvard and Oxford, I’ve watched one friend after another land high-ranking, high-paying Wall Street jobs. As executives (高级管理人员) with banks, consulting firms, established law firms, and major corporations, many are now  41  on their way to impressive careers. By society’s  42  , they seem to have it made. On the surface, these people seem to be very lucky in life. As they left student life behind, many had a  43  drink at their cheap but friendly local bar, shook hands with longtime roommates, and  44  out of small apartm已知函数f（x）=x3-（a+b）x2+abx，（0＜a＜b）．（Ⅰ）若函数f（x）在点（1，0）处的切线的倾斜角为，求a，b的值；（Ⅱ）在（Ⅰ）的条件下，求f（x）在区间[0，3]上的最值．