You can take anything from the shelf and read, but please ______the books when you’ve finished with them.

A．put on

B．put down

C．put back

D．put off

法律对社会的影响后果超出了立法者本来的意图，这说明法律具有（）功能。

A、显性功能

B、隐性功能

C、正功能

D、非功能