Many people have come to realize that they should go on________balanced diet and make________

room in their day for exercise.[ ]

A. a; /  

B. the; a  

C. the; the  

D. /; a

管理信息按决策层次分类。可分为三类：战略信息、战术信息和（）。

A.流动信息

B.固定信息

C.报表信息

D.业务信息