胎心减速一般不会发生在（）
A.胎儿缺氧早期
B.严重胎儿缺氧
C.脐带绕颈
D.羊水过少
E.第二产程延长
参考答案：A
解析：缺氧早期，胎心率于无宫缩时加快，>160bpm，故选A。缺氧严重时胎心率<120bpm，故排除B。脐带绕颈时，胎心出现频繁变异减速；在羊水过少的情况下，子宫收缩时可以出现胎心的晚期减速；第二产程延长早期可引起胎心率减慢，故排除C、D、E。
Kenny and Bobbi McCaughey live in Iowa. They have a big family. Mikayla is the oldest child in the family. She is six years old. The other children are Brandon, Joe, Kelsey, Kenney, Natalie, Alexis and Nathan. They are all five years old. Why are they all the same age? ______ 小题1:. They are septuplets!  It is hard work to look after seven babies at the same time. ______ 小题2:. In the beginning, many people helped them. They helped to feed, clean, and dress the babies. Every week , the septuplets used about 170 diapers(尿布)!______ 小题3:.Now the children are older. The septuplets started school this year. But they go to school at home, like their big sister, Mikayla. When Mikayla was ready for school, Kenny and Bobbi decided to teach her at home.______ 小题4:.Now Bobbi is the teacher for all eight of her children.
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