(求助）大全987之925

ecw127

    

1.       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.

    

(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

 
答案选A, 我选C. 想不明白为什么要开头用where. 请指点。

ecw127

自己顶一下，没有人能帮忙回答吗？