—Sorry, Bill, I can't go straight on and spend more time with you in Huangshan. ——_______

A．It was just like you.

B．Isn't it as bad as that?

C．You're really a wet blanket.

D．Accidents will happen.

某猪群，部分3～4月龄育肥猪出现消瘦、顽固性腹泻，用抗生素治疗效果不佳，确诊为食道口线虫病，治疗该病可选用的药物是（）

A.三氮脒

B.吡喹酮

C.左旋咪唑

D.地克珠利

E.拉沙里菌素