【C4】A．proficientB．prospectiveC．profoundD．provocative

The money I have saved is ____ for buying a car.A.proficientB.efficientC.potentialD.suff

He is an ____ manager.A.proficientB.efficientC.potentialD.sufficient

【C3】A．proficientB．efficientC．sufficientD．elaborate

_________(56)A.respective B.prospectiveC.subjecti

P因子对其有稳定作用是（　　）A.C3aB.C4C.

不参加旁路激活途径的补体固有成分是A．C5 C6B．D因子 P因子C．C4 C2D．B因子 C8E