On AIDS Day, the minister of Health Department demanded that the problems _____ paid special attention to.

A．referred to being

B．referred to be

C．refer to being

D．refer to be

前部缺血性视神经病变的特点有（）

A.眼底检查：视 * * 水肿、色淡、边缘模糊

B.常双眼受累，多为双眼先后发病

C.视野检查：与生理盲点相连的水平性半盲

D.好发于中老年人

E.主要症状为突然视力减退，不伴眼球转动时疼痛