She has been teaching in a school since she graduated,so she is not ________ to associating with

business people. [ ]

A. addicted  

B. devoted

C. accustomed  

D. admitted

妊娠晚期，正常胎儿羊水中不应含有

A．胎脂

B．胎粪

C．毳毛

D．脱落的上皮细胞

E．性激素