下列()元素是有机物质的组成成分,也是酶促反应过程中原子团的必需元素
A.C、H、O、N、S
B.P、B
C.K、Ca、Mg、Mn、Cl
D.Cu、Zn、Mo、Fe
参考答案:A
Basketball is a kind of sport. You can't win the match by yourself. [ ]
A. popular
B. exciting
C. interesting
D. team
辨别维生素D缺乏性佝偻病的轻重主要根据()
A.症状
B.骨骼改变
C.血钙
D.血磷
E.血碱性磷酸酶