参考答案

正确答案：A
解析：文章在第一部分的最后谈到“in the absence of officialnumbers，with the heightened tension surrounding racial issues， and with the mutual suspicion that exists among competing racial and ethnic interest groups，there's little agreement on what intermarriage will mean for U．S．society in the future”，这里提到了“由于缺乏官方数据、种族问题情势日趋紧张、相互竞争的种/民族利益集团间相互猜疑，人们对异族婚姻在未来美国社会中的影响还没有形成一致看法。”