题目

Meat _______ out in this shop. We can _________ now. A . have been sold, get nothing B . has been sold, get nothing C . has been sold, get some D . have been sold, get some 答案：B已知f（x）=x2-2x-1，g（x）=x2-2x-1（x∈[-2，4]）．（1）求f（x），g（x）的单调区间．（2）求f（x），g（x）的最值．