Ted couldn't remember the exact date of the storm, but he knew it was _______ Sunday because everybody was at _______ church.

A．/; the

B．a; /

C．/; a

D．the; /

罗马共和国灭亡的主要原因是[ ]

A．布匿战争的失败

B．元老贵族的破坏

C．严重的社会危机

D．外族入侵