Finally she got too tired and fell asleep at the desk, her right hand still ______ a pen.[ ]

A. held  

B. to hold

C. holding  

D. was holding

大便时和便后肛门剧痛并带少量鲜血的病有

A．肛管直肠周围脓肿
B．直肠息肉
C．肛裂
D．混合痔
E．血栓性外痔