— What should I do if I want to start a club at school?

— Mm, just make sure what club you want to start and _____ by your teacher. [ ]

A. approve it

B. have it approved

C. to have it approved

D. have approved it

脐带先露或脱垂对母儿的影响有下列哪些情况：

A．造成胎盘早剥

B．胎心率异常

C．胎儿缺氧

D．胎头下降受阻

E．增加产妇的手术产率