While crossing the street, an old man was knocked down by a car and badly __________.

A．wounded

B．ruined

C．injured

D．harmed

关于静脉补液，下列错误的是

A．低渗性缺水应补等渗或高渗盐水
B．等渗性缺水最好用平衡盐溶液
C．高渗性缺水最好补等渗盐水
D．等渗性缺水用等渗盐水补充可致高氯血症