In a certain cache system, the modified cache block is written to main memory only when the block is replaced. All of following are used to describe this policy EXCEPT

A． store-in

B． write-back

C． copy-back

D． write-through

女性，55岁，既往有高血压病史10余年。本次因大便突发头痛偏瘫4h伴呕吐2次。体检：血压25.6/13.9kPa (192/104mmHg)，左侧上、下肢肌力0级，肌张力低下。左侧偏身痛觉减退。

最有诊断和鉴别诊断价值的辅助检查是

A．脑电图检查

B．肌电图检查

C．头颅X线摄片

D．颅脑CT

E．脑组织活检