窒息新生儿心肺复苏最重要和最有效的步骤是什么?
PartIVTranslation
Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.(PassageTwo)
PartIVTranslation：
Almost30millionAmericansweightatleast20percentmorethantheiridealweight.Infact,theUnitedStateisthemostoverweightcountryinthewild.(PassageThree)
刚出生，当你评估是否需要复苏时，你将问有关新生儿的哪4个问题?
正常枕先露分娩时，仰伸发生于
