We took usual steps:sounding the depth, reversing and stopping engine,paying out anchor and 60 fathoms of chain cable in the depth of 12 fathoms.The operation above is（）.

A.berthing

B.searching

C.anchoring

D.picking up pilot

根据神的盛衰和病情的轻重一般可分为（）（）（）（）和神乱5类。