--- It’s difficult for the village children to cross the river for school.

--- I think a bridge _______ over the river.

A．should be built

B．is being built

C．has been built

D．was built

单位保管的会计档案不得借出，如有特殊需要，须经（ ）批准，可以提供查阅或者复制，并办理登记手续。

A．单位负责人

B．总分计师

C．会计机构负责人

D．档案管理部门负责人