As an important phase in software development, software design is the continuation of software requirement analysis phase. Ⅰ．software structure 　　Ⅱ．software procedure Ⅲ．software module 　　　Ⅳ．software document which of the following should be included in software design phase

A．Ⅰand Ⅱ

B．Ⅱand Ⅲ

C．Ⅰ,Ⅱ and Ⅲ

D．All

男，43岁，10个月前无意中发现左颈部包块，无不适感，近2周出现声音嘶哑，无鼻阻、耳闷、涕中带血等表现。检查见颈动脉三角区有直径5cm包块，左右活动好，上下活动欠佳，边界清楚，无粘连，质韧。于包块表面触到搏动，推开血管，于其下面仍可触到包块。依上述描述，最可能的诊断是

A．颈部转移性恶性肿瘤

B．颈部血管瘤

C．颈部神经鞘膜瘤

D．颈部慢性淋巴结炎

E．颈部纤维瘤