It is ______ unusual feeling for animal lovers to see ______ giant panda, one of China’s most famous animals.

A．an; 不填

B．an; the

C．the; the

D．the; 不填

变换体位进行检查，肿块内有可活动的水平分隔线是腹膜后皮肤囊肿和畸胎瘤的表现特征。