诱因
参考答案：诱因：能够激起有机体的定向行为，并能满足某种需要的外部条件或刺激物
引起血钠减低的因素有（）
A.输注高渗盐水
B.肝硬化
C.糖尿病性多尿
D.肾上腺皮质功能亢进
E.原发性醛固酮增多症
Parents often ask their children _____ their Internet friends because they may be in danger.
A．to meet
B．to not meet
C．meeting
D．not to meet
