题目

Five passengers were _____ in the traffic accident and they have all been taken to the nearest hospital． A．injured           B．damaged           C．destroyed         D．ruined 答案：A已知函数，。（1）求f（x）的最大值和最小值；（2）若不等式|f（x）-m|＜2在上恒成立，求实数m的取值范围。