The author of the article believes that it is the test system, ______ teachers, that is responsible for the heavy burden of the middle school students nowadays.

A．other than

B．or rather

C．rather than

D．more than

进行国际公开招标，需要有专门的机构和人员对招标活动进行组织管理，以保障招标工作的( )。

A．合理性

B．科学性

C．法律性

D．规范性

E．有效性