初产妇，28岁，孕38周。昨晩出现宫缩，每次持续时间为5s，间隔时间为20min。同时产妇自觉有轻微腰酸、下腹酸胀。今晨产妇入院后感腹痛，宫缩每次持续时间为50s，间隔期为5~6min。该情况属于（）

单项选择题5.最能反应昏迷病人病情的体征变化是（）

单项选择题In primary bond markets, the method of allowing certain authorized issuers to offer additional bonds to the general public by preparing a single, all-encompassing offering circular is most likely known as a(n)A.private placementB.shelf registrationC.underwritten offering