OG48-8

[lucyyeh]

我想問一題考古題裡的題目
8. The author suggests that it would be disadvantageous to a union if
(A) many workers in the locality were not unionized
(B) the union contributed to political campaigns
(C) the union included only public-sector workers
(D) the union included workers from several jurisdictions
(E) the union included members from only a few occupations

答案A,
我想了很久覺得定位應該是定回第一段的最後一句
In localities(位置) where clerical workers were few in number, were scattered(分散) in several workplaces, and expressed no interest in being organized, unions more often than not ignored them in the pre-1975 period.(難句：至於員工很少，據點分散，或是對參加工會不感興趣的地區，75年前是沒有工會的)

可是unions more often than not ignored them in the pre-1975 period
這句我實在看不懂是甚麼意思，more often than not ignored them該怎麼解釋?
請各位高手協助解惑! 謝謝!