白内障囊内摘除术常见并发症是（）
A.玻璃体脱出
B.视网膜脱离
C.角膜损伤
D.继发性青光眼
E.玻璃体疝
参考答案：A, B, C, D, E
—________ didn't you finish your homework, Jenny?
—Because my mother was ill. I had to take care of her. [ ]
A. Why
B. When
C. What
D. Where
职业技能是人们谋生和发展的必要条件和重要保障的具体体现有( )。
A．职业技能是就业的保障
B．职业技能有助于增强竞争力
C．职业技能是实现个人理想的重要途径
D．职业技能是履行职业责任、实现自身价值的手段
