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【单选题】
女25岁,第一胎,有关胎儿发育的特征错误的是A.
孕8周末B超可见胎心搏动
B.
孕16周末孕妇偶感胎动
C.
孕18～20开始出现排尿及吞咽运动
D.
孕24周末胎儿身长为35cm
E.
孕40周末胎儿发育成熟
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