题型：问答题 简答题 奶牛，3岁，两前肢跛行，尤以在硬地上为甚。站立时弓背，两后肢前伸达于腹下。体温升高，脉搏加快，肌肉震颤、出汗。蹄冠皮肤发红、增温，指动脉亢进。该病最可能是（）A.腐蹄病B.局限性蹄皮炎C.蹄叶炎D.指间皮炎E.指间蜂窝织炎 查看答案
题型：问答题 简答题 it is normal for parrots to talk, Einstein, a small bird, is unusual in that whenever she hears a new word or sound, she repeats it over and over until she masters it.A．AsB．WhenC．While D．Since 查看答案