诊断直径小于2cm的肝癌，最好的定位方法是()
A．放射性核素肝扫描
B．选择性腹腔动脉造影检查
C．B型超声检查
D．腹部CT
E．肝穿刺术
参考答案：B
________may be，one sometimes makes mistakes.[ ]
A．However a wise person
B．What a wise person
C．However wise a person
D．What wise a person
保育员在幼儿离园时应做哪些工作？
