某男性患者48岁,左上65缺失,可摘局部义齿修复,基牙左上4Ⅰ度松动,这种情况下,左上4上可设计()
A.环形卡环
B.固定卡环
C.双臂卡环
D.长臂卡环
E.对半卡环
参考答案:B
One of the greatest benefits of Internet friendships is that they are based on common interest ________ appearance, age or popularity.
A.in case of
B.in the form of
C.in spite of
D.instead of
用长效避孕药停药后要用3个月的短效避孕药作为过渡,正确的解释是()
A.避免停药后引起不良反应
B.避免停药后的反跳作用
C.避免因体内积蓄的雌激素继续作用而致月经紊乱
D.有利于增强避孕效果
E.有利于对子宫内膜的保护