按1983年的国际分类法，有玻璃体混浊和色素颗粒属PVR（）
A.A级
B.B级
C.C级
D.D级
参考答案：A
There are two buildings, ____stands near a hundred feet high.
A．the larger of which
B．the larger of them
C．the larger one that
D．the larger
乙胺丁醇属于______。
A．抗病毒药B．抗真菌药C．消毒防腐药D．抗结核病药E．抗肝病药
