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当前学科：妇产科主治医师
题目：
单选题
女性，30岁，原发不孕3年，月经不规律，周期25～60天，量中筹，无痛经，妇查未发现特殊症状。进一步检查应首选（）
A
输卵管通液
B
B型超声
C
性交后试验
D
X线腹部平片
E
经前或见红12小时内诊刮病理检查
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