下列哪种情况不是预防性消毒。（）
A、饮水加氯
B、食物煮沸
C、公共场所空气消毒
D、对痢疾患者每次所排粪便的消毒
参考答案：D
— Have you ever been to Sun-Island?
— No, I _____ last year, but Dad wouldn't let me. [ ]
A. was to have gone
B. were to go
C. was gone
D. went
下列哪些不是偏瘫病人的步态（）
A.前冲步态
B.剪刀步态
C.垂足步态
D.共济步态
E.划圈步态
