核心问题
Her dress was spotlessly clean and well made, but it was the kind of address which the daughter of a poor man might have worn. (TOEFL)
我看不出这道题有什么错误。请指教。
词典解答
英语测试专家和英语词典的编纂者们仍然认为 a（the）kind of a + N 是不规范的。因此，上题中的 the kind of a dress 应改为 the kind of dress。考生记住他们的观点和要求，就足够了。英语教师则应参阅(a) type of, (a) sort of, 作进一步的了解。