It's not right to make a decision without ( ) and study.

It's not right to make a decision without ( ) and study.
A、requirement
B、examination
C、equipment
D、investigation
【正确答案】:D
【题目解析】:本题考查名词辨析。requirement“要求”,examination”考试”,equipment“设备”, investigation”调查” 。句意:没有调查研究就作出决定是不妥的。故选D。