动物疾病发展过程中，从疾病出现最初症状到主要症状开始暴露的时期称为
A．潜伏期
B．前驱期
C．临床经过期
D．转归期
E．频危期
参考答案：B
— Has the professor's talk got____ to do with your present research?
— Yes, it has____ to do with my research. [ ]
A. nothing; a lot of
B. something; nothing
C. anything; a lot
D. anything; little
入院介绍包括哪些内容？
