题目内容：
根据下列题干，回答题：The purpose of the requirements definition phase is to produce a clear , complete, consistent,and testable （ 1 ）of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each （ 3 ）that it must meet. The starting point is usually a set Of high-level requirements from the （ 2 ）that describe the project or problem.
In either case , the requirements definition team formulates an overall concept for the system and then defines （ 4 ）showing how the system will be operated , publishes the system and operations concept document, and conducts a system concept review(SCR).
Following the SCR, the team derives （ 5 ）requirements for the system from the high level require- ments and the system and operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.
请选择（ 1 ）处最佳答案
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