哪项指标是小肝癌定位的最好方法
A．B超检查
B．放射性核素检查
C．CT结合数字减影肝动脉造影
D．CT检查
E．腹腔镜检查
参考答案：A
Mr. Green _______ to the manager now. You'd better call him later. [ ]
A. talk
B. talked
C. is talking
D. was talking
动手术切除翳膜的条件是什么？
