A:carried out
B:carrying out
C:carry out
D:to carry out
(Ⅰ)求圆C的面积;
(Ⅱ)直线与圆C相交于A,B两点,求|AB|.
Tom and Jenny are in the same school. And _________ like sports very much.
如图,若以解放公园为原点建立平面直角坐标系,则博物馆的坐标为( )