求教！！！关于OG sc 中的逻辑关系问题

bbnv11

想问问大侠们，OG是如何在这一题中判断逻辑关系的？OG 13 sc 23    The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans withfishing and hunting.
with fishing and hunting.
(A) but supplementing


(B) and had supplemented
(C) and even though they supplemented
D) although they supplemented
(E) but with supplementing

这道题根据连词可以轻松做出，但OG却搞了个逻辑意思解题
“本题的逻辑是对比而非补充， 而且因为反对一个主句，重要性不相等，所以要用从句


对比这个我可以看出来，但OG是如何判断这个重要性的？并且进而提出要用从句，为什么？
真心求解

bbnv11

有么有牛牛在

bbnv11

顶啊

bbnv11

bbnv11

有这么难吗

DUKB24

notice the word “ primarily”

I think this is the key word why the other part should be subordinate clause


despite they do something，they primarily belong to blablabla....


if you use and，it could not show this kind of contrast


if you use but，the emphasized part should be the clause led by the word“but”   such structure make the existence of “primarily” a little bit awkward


personal opinion ，open to discussion

bbnv11

那是不是说，有primarily 在的那一句话就是句子的逻辑重心呢？

DUKB24

嗯，可以这么理解

bbnv11

谢了

liyao604

好赞！！！帮助很大！！！