题目

. He sent me an e-mail,        to get further information. A. hoped B. to hope C . hoping D. hope 答案:C如图所示,为某一家庭的遗传系谱图,父母均为正常,其儿子为白化病患者,则该父母所生第二个小孩为白化病男孩机率为A.0 B.1/4C.1/8D.1/2
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