Not only ______ interested in the football but _______ beginning to show an interest in it.

A．the teacher himself is; all his students are;

B．the teacher himself is; are all his students;

C．is the teacher himself; are all his students;

D．is the teacher himself; all his students are;

商族的远祖可追溯到尧舜时代的契，传说契母简狄吞玄鸟之卵而生契。契便是商人的祖先。以此传说推测，商族是以( )为图腾的部落。

A．青龙

B．白虎

C．玄鸟

D．朱雀