Mandarin and English are _________ languages.
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A boy is ________while a girl is female.
高压线缆用颜色鲜明的橙色外皮或者护套保护起来，不仅能起到良好的绝缘作用还有必要的警示效果
A. 对
B. 错
Which of the following conditions is not the sign of episiotomy
A. perineum scar
B. inevitable perineum tearing
C. fetus weights 4200g
D. premature rupture of membranes
E. obstetrical forceps delivery
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