The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of (21) and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions - time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive (22) which is concluded with a well-defined (23) and can be further broken down into (24) - a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group (25) logically by nature.

22（）

A.orientations

B.views

C.aspects

D.phases

关于内科腹痛的鉴别诊断，正确的说法是（）

A.内科的腹痛先发热后腹痛

B.霍乱腹痛伴吐泻交作

C.痢疾腹痛伴里急后重

D.有明显压痛

E.疼痛有定处