It's not what you do once in ____ while but what you do day in and day out that makes ____ difference.

A．the ; /

B．/ ; a

C．a; a

D．the; a

干热灭菌法包括（）

A.烧灼法

B.巴氏消毒法

C.烘烤法

D.焚烧法

E.高压蒸汽灭菌法