下列哪些疾病属钠通道疾病（）
A.高钾型周期性瘫痪
B.低钾型周期性瘫痪
C.正常血钾型周期性瘫痪
D.多发性肌炎
E.先天性肌强直
参考答案：A, C
Is ________ man’s ability to reason that sets him apart from other animals?
A．one
B．this
C．it
D． /
圆是轴对称图形。［ ］
