Physicians are clear that thyroid dysfunction is manifest in growing children in the form of mental and physical retardation.
【正确答案】 B
【答案解析】解析:划线词manifest作为形容词的含义是“明显的,显然的”。选项A为“加强”,选项C为“代表性的”,选项D为“阴险的,隐伏的”。