题目

奇函数在区间上单调递减，且，则不等式的解集是（   ） A．                    B． C．                       D． 答案：A —Alice, you look puzzled. Have you understood it? —Yes, I 　　　　another problem just now. A. have thought of　　 B. am thinking of C. had thought of　　　 D. was thinking of