【正确答案】：
THE AMERICAN WOMEN MADE GREAT CONTRIBUTIONS TO THE NATION'S DEVELOPMENT, BUT THEY RECEIVED DIFFERENT FORMS OF PREJUDICES BECAUSE OF THEIR SEX.
【题目解析】：考点：美国妇女：the American women；重要贡献：great contributions；歧视：prejudice。句子结构：并列句，but连接两个并列的句子，表示转折关系，翻译为但是。