104. 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 last year.
这里说heating-oil prices are expected to be higher this year than last year's 是错的。说是this year与last year比较才对。但是不能理解成主语比较吗?
我也正在看这道题,我认为A和C前半部分也是正确的(比如OG16 104题 Heating-oil prices are expected to be higher this year than last)。我找到了Ron关于此题的解释https://www.manhattanprep.com/gmat/forums/the-word-omitted-in-comparison-t32362.html,他肯定了A和C中的前半部分的结构是可以的,排除C是靠其第二部分的错误,OG关于C前半部分错误比较Price和 a year ago 是不正确的,送给同样纠结此题的小伙伴~