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问题 单项选择题

鲁某，男，28岁。自述脑子空洞洞的，整天什么事也不想，常沉默不语，交谈时词汇量特别少，如问“谁送你来的”答“父亲”，问“以前做什么工作”答“不知道”，该症状是（）

A．思维破裂

B．思维贫乏

C．思维奔逸

D．思维松弛

E．病理性赘述

答案

参考答案：B

填空题

已知2x-y+3=0，用含x的代数式表示y，则y=（    ）。
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单项选择题

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 (2)that it must meet. The starting point is usually a set of high-level requirements from the (3)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 win 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 operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.

空白（2）处应选择（）

A.criterion

B.standard

C.model

D.system
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