【正确答案】:
IN POLITICS, THEY DID ALL THE TEDIOUS DETAILS THAT MADE THE DIFFERENCE BETWEEN VICTORY AND DEFEAT ON ELECTION DAY AND SELDOM HAD THE CHANCE TO REACH A BETTER POSITION, WHILE THE MEN REAPED THE REWARDS. 
【题目解析】:考点:政治:politics;乏味:tedious;胜败:victory and defeat;高层职位:a better position;得到好处:reap the rewards。句子结构:定语从句+并列句,that引导的定语从句用来修饰先行词details,while意为“而,然而”,作并列连词,表示对比。