—I feel really _____ before the interview (面试).

—take it easy. Sure you are the best.[ ]

A. patient

B. serious

C. nervous

D. cool

诊断明确后的治疗原则是

A．介入治疗
B．放疗
C．争取手术治疗
D．肝动脉插管、化疗
E．化疗