下面哪项不是包虫病的传染源

A．狗

B．狼

C．豺

D．狐

E．人

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;