新题250-138

138. Where once the union had acquiesced to the prejudices of its English-speaking members by supporting the imposition of an alien tax on immigrant workers, after 1897 the United Mine Workers made a determined effort to enlist Italians and Slavs in its ranks. C

(A) Where once the union had acquiesced to the prejudices of its English-speaking members by supporting

(B) Where once the union acquiesced to it English-speaking members’ prejudice for the support of

(C) While once the union had acquiesced to the prejudices of its English-speaking members in support of

(D) While once the union acquiesced to its English-speaking members’ prejudice in supporting（A）

(E) While once the union had acquiesced to the prejudices of its English-speaking members in its supporting of

where在句中什么意思？为什么C不对？

A. by supporting的逻辑主语是the union

C. in support of 的逻辑主语有歧义，可就近修饰members。