题目

I don’t think she is a nice woman；I am________her empty talk. A．grateful forB．tired of C．crazy about                   D．concerned about 答案：B17．设等差数列{an}的前n项和为Sn，若-a2015＜a1＜-a2016，则必定有（　　）A．a2016＜0，且a2017＞0B．a2016＞0，且a2017＜0C．S2015＜0，且S2016＞0D．S2015＞0，且S2016＜0