胞睑是指（）
A.肉轮
B.血轮
C.气轮
D.风轮
E.水轮
参考答案：A
(2013·福建，29)Mrs.Smith finds it hard to clear up the mess，as her children are always ________ whenever she tries to.
A．in the way
B．on watch
C．in sight
D．on the line
检查内痔时最常用的体位是
A．弯腰前俯位B．膝胸位C．截石位D．蹲位
