这个题目真垃圾，它加入了‘one of’ 明显是在误导考生，如果按照正常理解，其实大可以问：In a tug-of-war competition, Team A and Team B are competing against each other. Team A consists of 3 males and 3 females. They decide to line up in a specific order: male, female, male, female, male, female. How many different possible lineups can Team A choose while maintaining this specific male-female order? 这样子就没误会了。