Don't laugh ____ him, he only made a small mistake. [ ]
A. at
B. to
C. about
D. over
答案:A
妊娠期间, * * 出血,无腰酸,腹痛者
A.妊娠腹痛B.异位妊娠C.胎动不安D.胎漏E.小产
以下哪项不是全胃肠外营养的并发症()
A.气胸、血胸
B.出血
C.高渗性非酮性昏迷
D.臂丛神经损伤
E.血磷过高