XDF蓝皮中册P121T1???

Although dozens of New York's small museums are either devoted to local history or various ethnic groups, there are many one-of-a-kind museums from Manhattan to Bronx that are open for exploration on summer weekends.

A) Although dozens of New York's small museums are either devoted to local history or various ethnic groups, there are

D) Dozens of New York's small museums are devoted to local history or various ethnic groups, and there are also

答案是D.个人觉得因为句子强调后面半句,应该转折关系,所以我选A.请各位帮忙看看A为什么没有D好?

因为我觉得从逻辑意思来讲是应该选D的

题目说小博物馆要么是历史性的要么是不同民族的同时还有其他的一种就是在夏天的周日开放的。 后面的不同的博物馆与前面的两种没有什么必然的转折关系的。