34. Efforts to equlize the funds available to school distrits, a major goal of education reformers and many states in the 1970's, has not significantly reduced the gaps existing between the richest and poorest districts.

(A) has not significantly reduced the gaps existing

(B) has not been significant in reducing the gap that exists

(C) has not mad a significant reduction in the gap that exists

(D) have not significantly reduced the gap that exists

(E) have not been significant in a reduction of the gap existing

正确答案是D,理由是句子主语是efforts, 而我选择了A,理由是句子主语是a major goal.

如果a major goal是efforts的同位语，是否存在单数复数名称的问题？

谢谢。

a major goal

refers to "to equlize the funds available to school distrits"

not efforts

非限定子句(或同位格)只能用以說明先行詞，不作為限定之用，故主詞為先行詞efforts

故不存在單複數問題