同位语的问题

我看白勇语法中说同位结构中名词的数可以和其修饰对象的数不一致。

Each of Hemingway's wives- Hedley Richardson...-were strong and interesting women,very different from the often pallid women who populate his novels.

D. Strong and interesting women- Hadley...-  each a wife of Hemingway,was

E   Strong and interesting women- Hadley...-  every one of  Hemingway's wifes were

白勇给的解释是 D  Strong and interesting women 与was 主谓不一致，

                           E  主语every one of  与 were 不一致

我不太清楚，在D和E中到底哪个才是主语，那个是同位结构，因为这两个选项中前面都是复数，而后面则是单数， 所以如果在这样的结构中，如何判断哪个是主语呢？ 以为如果按照前面的是主语的话，谓语要用复数，后面的是主语的话，谓语要用单数。

 请各位帮忙解答一下，谢谢！

两个名词词组并列, 肯定是后面一个作前面一个的同位语

OG11-34.     Efforts(主语) to equalize the funds available to school districts, a major goal(同位语) of education reformers and many states in the 1970's, have not significantly reduced the gap that exists between the richest and poorest districts.

OG11-110.  In June of 1987, The Bridge of Trinquetaille(主语), Vincent van Gogh's view of an iron bridge over the Rhone(同位语), was sold for $20.2 million, the second highest price ever paid for a painting at auction.