题目

----Just a moment. I haven’t finished packing my suitcase.  ----________. Its high time we left for the airport. A. Go ahead        B. Take it easy            C.Hurry up           D. That's fine 答案：C  A、B是直线图象的两个相邻交点，且．（I）求ω的值；（II）在锐角△ABC中，a，b，c分别是角A，B，C的对边，若的面积为，求a的值．