Representations of software architecture are an enabler for communication between all parties (stakeholders) interested in the development of a computer-based system. An architectural style defines as a family of suchsystems in terms of a ______ of structural organization. More specifically, each ______ describes a systemcategory that encompasses: (1) a set of components (e.g., a database, computational modules) that perform afunction required by a system, (2) a set of ______ that enable "communication, coordination andcooperation" among components, (3)______ that define how components can be integrated to form thesystem, and (4) semantic models that enable a designer to understand the overall properties of a system byanalyzing the known ______ of its constituent parts.
A. function B. data flow C. pattern D. position level
牙龈探诊出血，PD：6～9mm，GR：1～2mm，TM：Ⅱ度，X线检查示牙槽骨吸收达根长2/3，最合适的诊断是（）。