The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting.
but supplementing
and had supplemented
and even though they supplemented
although they supplemented
but with supplementing
句意应该是表转折,排除了B
最后B中的and感觉没有跟她平行的东西 所以选了C
所以B去掉and对吗?
看到but就应该是知道是平行结构,但but 链接了一个分词结构 和一个句子,所以不对
But 应该连接两个独立的句子并且平行,但是这道题后面but连接一个现代分词,现代分词不能做谓语动词,所以but后面不是一个独立的句子。登录 或 注册 后可以参加讨论
其实这里应该不是转折的意思,是让步的意思,“尽管”登录 或 注册 后可以参加讨论