生育年龄的妇女,血中雌激素分泌的第一个高峰是在()
A.月经中
B.月经周期第一周
C.月经周期第21天
D.排卵前1天
E.排卵后11天
参考答案:D
The policeman asked ____ with the old woman.
A. what the matter was B. what was the matter
C. what matter was D what was the wrong
夹板外固定应注意的事项中,哪一项是错误的()。
A.绑带的松紧
B.压垫的放置
C.患肢的血运
D.骨突部的衬垫
E.有利于持重活动