该患者奔马律在心尖部听到，表明是

A．重叠型奔马律

B．左室奔马律

C．右室奔马律

D．左房奔马律

E．右房奔马律

The number of people invited ____fifty, but a number of them _____absent for different reasons.

A．were; was

B．was ; was

C．was; were

D．were; were