关于胎膜早破的预防正确的有
A.预防和治疗生殖道感染
B.妊娠晚期禁止性交
C.避免负重
D.及早纠正胎方位异常
E.宫颈内口松弛者卧床休息到足月
参考答案:A,B,C,D
The bridge ________ , after it is completed, will surely shorten the distance between the two cities.
A.building
B.built
C.being built
D.having built
什么是旅游者(罗马会议的标准)?旅游者的旅游动机有哪几种?