题目

Now 20 per cent of the wildlife park ________ used in this way. A．is           B．was                C．are          D． were 答案：Ａ8．正六边形的周长为6mm，则它的面积为（　　）A．$\frac{\sqrt{3}}{2}$mm2B．$\frac{3\sqrt{3}}{2}$mm2C．3$\sqrt{3}$mm2D．6$\sqrt{3}$mm2