低钾血症中哪一项论述是错误的:()
A.血清钾低于3.8mmol/L
B.钾丧失过多
C.钾摄入不足
D.心肌兴奋性增高
E.肠麻痹
参考答案:A
What's wrong with you? You look______. [ ]
A.fine
B.happy
C.nervous