【单选题】头低垂,颈扭曲,嗦囊扩张,张口呼吸等,是鸡马立克氏病哪一种临床表现型的典型症状()
【单选题】-- is your father ? -- He is watching TV.
【单选题】头低垂,颈扭曲,嗦囊扩张,张口呼吸等,是鸡马立克氏病哪一种临床表现型的典型症状()
【单选题】-Where is your father ? -He is at work . He always has lots of work __________ .
【单选题】________ your father a teacher?