P214

dianecarton

LZM语法说where once=because, 但其实不存在where once这个词组，where在这里是个连词，表示一种时间上的比较。

bongrim

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

在A   里面where 是什么意思？   C 为什么错？