巩膜周边冷冻术的治疗目的是()(1218-21)
A、消除结膜充血
B、减轻角膜浑浊
C、预防虹膜粘连
D、减少房液产生
E、促进晶体透明
参考答案:D
在△ABC中,,BC边上的高等于,则cosA=()。
A.
B.
C.
D.
The traditional approach ________ with complex problem is to break them down into smaller,
more easily managed problems.[ ]
A. to dealing
B. in dealing
C. dealing
D. to deal