The meeting _______for two hours, but they still ______any agreement.

A．has been going on; haven’t reached.

B．has been going on; haven’t been reached.

C．was going on; haven’t reached

D．was going on; haven’t been reached

关于天体及其运行，下列表述错误的是：

A.天球是为了确定天体位置和运动而假想的圆球 

B.在火星和木星轨道之间存在一个小行星带 

C.黄道面是指月球绕地球运行的轨道面 

D.星座是指在天球上投影位置相近的恒星群落