At times, worrying is a normal, ________ response to a difficult event or situation – a loved one being injured in an accident, for example.

A．effective

B．individual

C．inevitable

D．unfavorable

阿苯达唑治疗细粒棘球蚴的适应证是()

A．播散性继发性胸腹腔多发性细粒棘球蚴病

B．多器官或单器官多发性包虫囊且不易手术摘除者

C．摘除术后复发者且不能再次手术者

D．早期发现且囊小壁薄者

E．摘除术前预防原头蚴播散