The professor walked onto the platform and seated himself in a chair,________ for answering questions.

A．had prepared

B．being prepared

C．preparing　

D．prepared

酒精性肝硬化（）

A．假小叶均较小，纤维间隔较薄，炎细胞浸润较轻

B．假小叶大小不等，纤维间隔较厚，炎细胞浸润较重

C．肝细胞大片崩解坏死，肝细胞再生不明显，炎细胞浸润

D．肝细胞大片崩解坏死，肝细胞再生结节，纤维组织增生