______是我国古代在圆周率的发现和研究上做出突出贡献的科学家．
祖冲之是我国古代在圆周率的发现和研究上做出突出贡献的科学家；
故答案为：祖冲之．
A nurse in the nursery is preparing to perform phenylketonuria (PKU) testing. Which neonate is ready for the nurse to test ？（）
A．A 3-day-old neonate who has been fed IV since birth.
B．A 2-day-old neonate who has been breast-fed.
C．A 1-day-old neonate receiving formula.
D．A breast-fed neonate being discharged within 24 hours of birth.
皮质醇症临床表现，哪一项不常出现（）
A．向心性肥胖
B．高血压
C．病理性骨折
D．糖尿病
E．低钙抽搐
