为保护牙齿，应培养幼儿饭后（）和睡前（）的口腔卫生习惯。
参考答案：漱口；刷牙
Sally turned all of her pockets inside out only to find $ 1.87 _____ buy her daughter a present for Christmas.
A．with what to
B．with that she can
C．in which to
D．with which to
类风湿关节炎患者较少出现的自身抗体是（）
A.RF
B.AKA
C.APF
D.CCP
E.抗ANA
