贷款人应当建立（）的贷款管理制度。
A、审贷分离
B、分级审批
C、一次核定
D、随用随贷
参考答案：A, B
Once again he failed to hand in his homework _____ he had been given enough time to do it.
A．in case
B．as though
C．so that
D．even though
颈内动脉虹吸段是指颈内动脉的（）
A.颈段
B.岩段
C.海绵窦段
D.脑段
E.C和D
