If there is an intruder _____the campus, students should be _____through an announcement, ______teachers should lock their classrooms to keep the children safe.

A．in, warned, after that

B．at, warned, before which

C．on, informed, after which

D．in, informed, before which

按现行财税体制，中央税( )，地方税的立法权基本归中央，征收管理权和收入使用权归地方，中央地方共享税的立法权和征收管理权归中央，收入使用权共同分享。

A．所有权归政府

B．两权归一

C．三权归一

D．四权归一