A:Sorry, he is busy at the moment.
B:Why didn't you call earlier?
C:Certainly. May I know your name?
D:Sorry, he doesn't want to see you.
低磷酸酯酶症是一种遗传病。一对夫妇均正常,他们的父母也都正常,但丈夫的妹妹和妻子的哥哥患有低磷酸酯酶症。这对夫妇生患病儿子的概率是( )
读拼音写词语 。
yǔ
zhòu
zài
jiàn
____