题目

下列经线、纬线长度最长的是(     ) A．本初子午线           B．180°经线        C．0°纬线                D．南北极圈 答案：C．27、-Have you seen    pen? I left it here this morning． -Is it    black one? I think I saw it somewhere． A．a; the         B．the; the                 C．the; a                    D．a; a