接班人员接班时应将电梯上下运行数次，检查有无异常现象，严禁（）运行
参考答案：带病
在关系S(S#，SN，D#)和D(Dg，CN，NM)中，S的主键是S#，D的主键是D#，则D#在S中称为 ______。
Liu Xiang is ____ popular ____ many students are talking about him in and out of school.
A．too; to
B．to; too
C．such; that
D．so; that
