답입니다.어떤분이 직접 미국 문법 사이트에 질문해서 답 해 주셨네요 영어지만 그렇게 어려운 단어도없고..읽기도 어렵지 않습니다..

Although there are so many women in the labor force today, they are still facing many problems. For one thing, women workers do not yet receive equal treatment in the job market, ____ in the area of hiring ___ in the area of salary. 1.not - but 2. as - as 3. both - and 4. either - or 전에 다른 곳에선가 한 번 봤을 때는 헛갈린 상태로 넘어 갔는데 이번엔 정학히 해두고 싶어서 grammar exchange 사이트에 질문을 올렸더니 바로 답을 해주네요.(참고로 grammar echange는 유명한 Azar 의 Understanding and using english grammar란 문법책 홈페이지에 있는 Q & A 뉴스 그룹입니다.) Although there are so many women in the labor force today, they are still facing many problems. For one thing, women workers do not yet receive equal treatment in the job market, ____ in the area of hiring ___ in the area of salary. 1.not - but 2. as - as 3. both - and 4. either - or The last choice – either…or – is correct. The verb in the sentence is negative. For the first choice, "not…but": Since the verb in the sentence is negative, if the first phrase is negative, it is not clear whether the writer means to negate the idea of receiving equal treatment or not. In other words, it could be saying that not receiving equal treatment is not true in the area of hiring, but it is true in the area of salary. Or, the writer could be saying that women workers do not receive equal treatment in the job market in hiring or in salary. The second choice, "as…as," is, as you note, not worth considering. The third choice, "both…and," is not correct. The expression‎ "both…and" goes with affirmative statements. Remember that the verb in this sentence is negative. The fourth choice, "either…or" is correct: • For one thing, women workers do not yet receive equal treatment in the job market, either in the area of hiring or in the area of salary. The sentence could be written in several other ways, too, depending on what you mean. • For one thing, woman receive equal treatment in the job market neither in the area of hiring nor in the area of salary. (This sentence, while accurate, is awkward. It's better in this case to use the negative verb first so that the reader immediately knows that the idea is negative.) • For one thing, woman do not yet receive equal treatment in the job market in the area of hiring, nor do they in the area of salary." OR, if you mean one thing instead of another, you could write: • For one thing, women workers do not yet receive equal treatment in the job market in the area of hiring, but they do in the area of salary. Rachel