枕先露临产后,直肠指检了解胎头下降程度的标志为()
A.骶岬
B.耻骨联合后面
C.坐骨棘
D.坐骨结节
E.坐骨切迹
参考答案:C
胃十二指肠溃疡穿孔非手术治疗期间最关键的措施()。
A.禁食
B.胃肠减压
C.严密观察病情
D.补液、纠正水电解质紊乱
E.半卧位
—It's a long story, but there are not any new words in it.
—Good! _______ it will be hard for children. [ ]
A. So
B. Or
C. But
D. And