题目：
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) fortheproposedsystem.
空白（1）处应选择（）
A.analysis phase
B.design phase
C.implementation phase
D.maintenance phase
答案：
参考答案：A
解析：初始调查阶段的许多活动仍然会在分析阶段进行，但会比前面更为深入。在这个阶段，分析师必须认识到根本性问题并且必须获取到足够的关于业务环境和现有系统的知识，以便提出和实现一种有效的解决方案。除了现有系统过程与数据的逻辑模型外，这一阶段的交付品还包括了所建议系统的形式化需求定义。
