A plan has been put forward ________ more graduates should go to work in the country.

A．when

B．that

C．whether

D．how

对于暂时无人认领的遗留贵重物品，应（），并由专人保管，定期予以清点。

A、上交保安部

B、交到大堂副理处

C、存入保险箱或专用厍房

D、存入行李房