The food ________ because it _________ good.

A． sold out soon; was tasted

B． was soon sold out; tasted

C． has soon sold out; tasted

D． will soon sold out; tasted

可疑肉毒中毒呕吐物加生理盐水制成悬液，沉淀后用上清液进行毒素检验的方法不包括（）

A.加热煮沸上清液

B.注入2只小白鼠腹腔内

C.其中一只在接种前预先接种多价抗毒素血清

D.早期出现"蜂腰"，继而麻痹，最后死亡

E.保护实验动物无上述症状