题目

. I have no idea________is better, so I took       of them.        A.what; both       B.what; none       C.which; both      D.which; none 答案:C如图,以正六边形的顶点为圆心,1cm为半径的六个圆中,相邻两圆外切,则该正六边形的边长是    cm,正六边形与六个圆重叠部分的面积是    cm2.
英语 试题推荐