题目

阅读理解TheTaj Mahal (泰姬陵) is considered to be one of the mostbeautiful buildings in the world and the finest example of the late style ofIndian architecture (建筑). It is at Agra in northernIndia. It lies beside the River Jumna in the middle of gardens with quietpools.TheTaj Mahal was built by the Mogul emperor (皇帝) Shah Jahan, whoruled India in the seventeenth century. It is in memory of his favorite wife,born in Arjumand Banu Begum, known as Mumtaz Mahal, who died in 1631. Thebuilding, which was completed between 1632 and 1638, was designed by a localMuslim architect (建筑一对表现型正常的夫妇生了一个患某种单基因遗传病的男孩（不考虑突变和染色体交叉互换）。下列分析合理的是（ ）A.可以断定控制此病的基因位于X染色体上B.可以排除控制此病的基因位于Y染色体上C.可以断定该男孩的母亲是杂合体D.若这对夫妇再生一个男孩，该男孩正常的概率是1/2