最难早发现的为
A．宫颈粘液结晶B． * * 脱落细胞学检查C．分段诊刮D．宫颈涂片E． * * 镜检查
参考答案：D
如图所示，画出图中动力F1的力臂，并用字母L1表示．
—Would you mind putting out your cigarette?
—_______. I forget it's No-smoking Day. [ ]
A. Not at all
B. It doesn't matter
C. Yes, please
D. Just a little
