出口梗阻的主要原因有（）
A.脱肛痔
B.耻骨直肠肌肥厚
C.直肠粘膜内脱垂
D.直肠前突
参考答案：B, D
Between you and me, Peter is _____. He is out of breath while walking. [ ]
A. fatter than stronger
B. no weaker than before
C. more fat than strong
D. not so much fat as strong
严格教育是从严治警的基础，严格管理是从严治警的关键，严格训练是从严治警的手段，严格纪律是从严治警的保证。 ( )
