OG16 SC104 heating-oil prices

琳二

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. (A) 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 (B) Heating-oil prices are expected to rise higher this year over last because refiners pay about $5 a barrel for crude oil more than they did (C) Expectations are for heating-oil prices to be higher this year than last year's because refiners are paying about $5 a barrel for crude oil more than they did (D) It is the expectation that heating-oil prices will be higher for this year over last because refiners are paying about $5 a barrel more for crude oil now than what they were (E) It is expected that heating-oil prices will rise higher this year than last year's because refiners pay about $5 a barrel for crude oil more than they did

求教各位大牛牛，考了很多古，但是没有找到令我能完全理解透彻的解释，天资有限，还望各位不吝赐教。两个问题：
第一， Heating-oil prices are expected to be higher this year than last，last 后面为什么能省略?仅仅是省略了 year吗?
第二， refiners are paying about $5 a barrel more for crude oil than they were last year. more为什么放在这个位置，可不可以用$5  more for a barrel of crude oil?求教more的知识点。


谢谢大家，阿弥陀佛！！希望明早起床能看到好心人的回复。

琳二

自己顶〒_〒，为什么木有人帮忙啊

Daisyliu1989

lz我和你有一样的问题，而且og中前面有一道题的正确答案还是：price at the producer level are only 1.3 percent higher now than those of a year ago 因为是price now 和 those of a year ago比较. 而且og中还说不可以把those of a year ago 换成 a year ago。那这道题不就是把 heating oil price this year 和 last year 比较么，不同样也是错的么？ 这种平行结构一直都没弄明白。

kwyang

看完就懂了
http://forum.chasedream.com/thread-1227538-2-1.html