腰俞麻醉的解剖标志是：（）
A.第二骶骨棘突
B.第三骶骨棘突
C.第四骶骨棘突
D.骶骨角
E.骶裂孔
参考答案：E
Yesterday, I saw _________ enjoy _________ in the park.
A．her, hers
B．they, them
C．she, herself
D．them, themselves
The wise parents can tell whether their children are telling the truth_____ they listen to their excuses to wrong deeds.
A．the first time
B．for the first time
C．every time
D．for every time
