1、The fertile catkins of willow tree are the green, caterpillar-like ones,commonly_____in length. A) or an inch more B) or an inch as C) at least the inches D) an inch or more the key: D 有一个很奇怪的想法,这里的the green, caterpillar-like ones(pl.)和an inch or more(单数)不一致呀~~ 所以我选了C,虽然inches看着很恶心 谁给讲讲?