Tony eventually realized his childhood dream ___ he could play on one of the top teams.

A．which

B．that

C．of which

D．where

可确定脑蛛网膜下腔出血病因的无创性诊断方法（）。

A.磁共振血管造影

B.腰椎穿刺

C.CT

D.脑血管造影

E.脑电图