新版OG12关于A写的是supplementing expected to modify the first clause,discribing or extending its meaning,所以supplementing应该是做伴随状语修饰iroquos,but不光只有连词词性,个人感觉应该这里应该是介词词性,意思是除。。。之外,这样的话就没有对比的意思了所以逻辑意思不对。而且前人总结虽然都说伴随状语不能修饰系动词但从这句中应该是把这个观点反驳了
而OG上对A项的解释是The participle “supplementing” would normally be expected to modify the first clause, describing or extending its meaning, but the logic of this sentence demands a contrast, not an extension 谁能来帮忙解释一下。。