Not only _____interested in changing teaching methods 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

患血吸虫病是因为（）

A.吃了不干净食物

B.接触疫水

C.接触患者

D.空气传染

E.吃了带虫卵的食物