It is likely that these animals could be frightened，          a sudden loud noise．

A．being there

B．should there be

C．there was

D．there having been

患者妊娠早期， * * 反复少量出血，腹胀坠作痛。其诊断是（）

A.胎漏

B.堕胎

C.胎动不安

D.小产

E.暗产