题目

使sinx＜cosx成立的一个区间是(    )A.［-,］      B.［-,］        C.［-,］        D.［0,π］ 答案：解析:在同一坐标系中画出y=sinx与y=cosx的图象便得.答案:A-_______, Judy. Let's go to the cinema!- I'm sorry I can't go with you. I have a lot of homework to do.A. Come on B. Take careC. See you D. Thank you