处女膜闭锁系__________________，一经确诊，即予________治疗。
参考答案：尿生殖窦上皮未能贯穿前庭部；手术
Rick has to talk ______ different people every day. [ ]
A. with
B. about
C. on
D. for
铸铁省煤器管子上的鳍片形状有圆形和（）形两种。
