小明平时常感到无力，头晕，有贫血的症状，可能是由于缺乏 [ ]
A．糖类
B．铁
C．硒
D．脂肪
答案：B
The old lady insisted that her daughter ____ still alive and that she ____ at once.
A．was; was operated
B．was; be operated
C．should be; should be operated
D．be; should be operated
