软眼手术(soft-eyesurgery)大大降低了哪些病变的发生
A.后囊破裂
B.玻璃体丧失
C.虹膜脱
D.脉络膜下腔出血
参考答案:A, B, C, D
I was blessed with a happy childhood, ______ I really enjoy myself playing with my best friend Danny.[ ]
A. which
B. whose
C. when
D. where
避孕效率最高的措施是哪一种
A.复方短效口服避孕药
B.长效避孕针
C.宫内放置节育器
D.安全期自然避孕法
E. * * 隔膜