名词解释：preferredstock
Preferred stock entitles owners to a guaranteed dividend, a priority at the time of liquidation, or some other preference over ordinary shareholders.
暂无解析
Onaverageabout￡5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.