题目

人群中常染色体显性遗传病发病率19%,一对夫妇妻子患病,丈夫正常,他们所生子女患病概率是    A. 11/20          B. 10/19      C. 9/10    D.3/4 答案：BPlease take these things ________ your brother. A. in B. at C. to D. on