初产妇第二产程时,何时应开始保护会阴()
A.胎头仰伸时
B.胎头拨露使会阴后联合紧张时
C.宫口开全时
D.胎头着冠时
E. * * 口见胎头时
参考答案:B
1,3,6,18,21,63,( )
A.124
B.98
C.82
D.66
The old man who()in the deserted house alone tbr ten years has been settled in a nursing home now.
A. lived
B. had lived
C. has lived
D. has been living