Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were 查阅了og的解释, The sentence connects acomparison between this year's and last year's heating-oil prices with a comparison between this year's and last year's crude-oil prices. 个人认为关于这里的两个比较,第一个比较其实是省略了they were , 表示一种状态的可以省略,因为是be higher,而后面的paying 是一种动作,所以不省略they were,个人愚见。。 -- by 会员 lijiazhou (2012/3/9 10:18:42)
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