(2013·皖南八校模拟)The band was very successful in the seventies, most of

　　　members were in their twenties.

A．its

B．whose

C．whom

D．which

脑电图检查的重要性在于可（）

A.查出血管阻塞部位

B.确定有无脑梗死

C.确定有无脑萎缩

D.确定有无癫痫可能

E.确定是否为血管性头痛