题目

There was a fire in the hotel around midnight last Friday. Luckily, it was soon ________.            A. put on              B. put out             C. put off             D. put away 答案：B（本小题满分12分）已知函数的最大值为，是集合中的任意两个元素，且||的最小值为。（I）求，的值；（II）若，求的值