Researchers at Children’s Hospital of Pittsburgh announced they had discovered ______ evidence that a virus is involved in what used to be called juvenile diabetes.

A. incessant
B. compelling
C. identical
D. problematic

对一例低渗重度脱水患儿进行补液，第一天用4∶3∶2（2/3）混合液按100～120ml/kg给予（暂先禁食6～8小时）。所用4∶3∶2液的组成是（）