为达到审美要求，不可采用以下哪种措施来调整缺牙间隙过宽()

A．扩大前牙唇面近远中邻间隙

B．改变颊嵴的位置

C．扩大舌侧外展隙

D．将人工牙排列成扭转、重叠

E．酌情添加人工牙

The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of (1) 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 (2) which is concluded with a well-defined (3) and can be further broken down into (4) -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 (5) logically by nature.

空白（5）处应选择（）

A.functions

B.workflows

C.actions

D.activities