You can only be sure of ____ you have at present; you cannot be sure of something ____ you might get

in the future. [ ]

A. that; what

B. what; /

C. which; that

D. /; that

多发性肌炎的肌肉活检病理上表现为（）

A.肌肉活检发现包涵体颗粒和包涵体

B.骨骼肌的炎性改变，纤维变性、坏死，炎性细胞浸润

C.肌肉活检见RRF纤维

D.肌纤维坏死和再生，出现肌细胞萎缩与代偿性增大镶嵌分布特点

E.非特异性肌源性损害