Many of the activities performed during the preliminary investigation are still being conducted in（1）, but in much greater depth than before. During this phase, the analyst must become fully aware of the（2）and must develop enough knowledge about the（3）and the existing systems to enable an effective solution to be proposed and implemented. Besides the（4）for process and data of current system, the deliverable from this phase also includes the（5）for the proposed system.

2.见题干（）

A. main symptom

B. root problem

C. final blueprint

D. data specification

男性，20岁，踢足球时右膝摔伤，8周后仍疼痛。查体：右膝肿胀，浮髌试验阳性，前抽屉试验阳性，侧方应力试验阴性。

其最佳的诊治方法是（）

A.膝关节镜

B.切开探查修复

C.膝关节CT

D.膝关节穿刺抽液检查

E.膝关节X线片