请教OG16的一题语法题

梦想的蝴蝶

90. Prices at the producer level are only 1.3 percent higher now than a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raised corn and soybean prices.
(A) than a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raised
(B) than those of a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raising
(C) than a year ago and are going down, despite floods in the Midwest and drought in the South, and are hurting crops and therefore raising
(D) as those of a year ago and are going down, even though floods in the Midwest and drought in the South hurt crops and therefore raise
(E) as they were a year ago and are going down, despite floods in the Midwest and drought in the South, and are hurting crops and therefore
raising
答案里说AC不对是因为对比了price和time，但是为什么这里的对比不能是now比last year？究竟怎么看这个对比的主体的呢？

alzn2765

可以对比now和a year ago，但是句子肯定不这么写。
想知道比较的主体是什么很容易：
xxx than结构中，xxx就是加了比较级的那个形容词或者副词，这题中是higher。也就是something is higher than something。好了，现在把你以为的比较对象往里代：
1. 比较时间：now is higher than a year ago 这里能用higher吗？
2. 比较prices： prices now are higher than prices a year ago 这里的确可以用higher
比较的主体是不是一下子就试出来了？

一定上

alzn2765 发表于 2016-2-4 16:01
可以对比now和a year ago，但是句子肯定不这么写。
想知道比较的主体是什么很容易：
xxx than结构中，xxx就 ...

同意！               

qingping01

alzn2765 发表于 2016-2-4 16:01
可以对比now和a year ago，但是句子肯定不这么写。
想知道比较的主体是什么很容易：
xxx than结构中，xxx就 ...

可是我觉得题目可能是把主谓都省略了呀