One of the provinces in the north has          to form a new state.

A．broken down

B．broken up

C．broken out

D．broken away

八个月患儿，腹泻3～4天，每天10～15次水样便，12h无尿，呼吸深大，前囟、眼窝明显凹陷，皮肤弹性很差，四肢冰凉入院。血钠121mmol/L血钾5mmol/L，CO-CP11mmol/L。

脱水纠正，尿量中等，出现心音低钝，腹胀，血钠135mmol/L，应考虑()

A．低钾血症

B．低钙血症

C．低钠血症

D．低镁血症

E．水中毒