题干
He was _____ by his grandparents, so his parents seemed to be strangers to him.
A：brought out
B：brought dow
C：brought i
D：brought u
答案(点此获取答案解析）
D
A：brought out
B：brought dow
C：brought i
D：brought u
，夫妻双方的其他家族成员均正常。表现正常的该夫妇生育出黑尿症患儿的概率是（ ）