Frequently single-parent children ________ some of the functions that the absent adult in the house would have served.

A．take on

B．take up

C．take in

D．take after

党的机关秘密公文的印发传达范围应当按照发文机关的要求执行，下级机关、不相隶属机关如需变更，须经( )批准。

A．上级党的机关

B．上级政府机关

C．发文机关

D．上级保密机关