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【单选题】
正常枕先露分娩时,发生于
A.
胎头拨露时
B.
胎头着
C.
胎头枕骨在耻骨弓后时
D.
胎头枕骨下部达耻骨联合下缘时
E.
胎头后囱在耻骨弓后时
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【单选题】听力原文： What kind of car will we be driving by the year 20107 It may be rather different from the type we know today. With the next decade, bringing greater change than the past 50 years, the people who...
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