We were cut off from the outside world by the sudden flood; what’s worse, our food ______.

A．was run out

B．was running out

C．has run out of

D．has been run out

巴比妥类使口服避孕药效果降低属于药物相互作用( )

A．与血浆蛋白结合

B．排泄

C．作用于不同作用点的协同作用

D．作用于同一受体的拮抗作用

E．酶诱导作用