【求助】新prep-1-175,请NN帮助......

蔻华施

175.

 

Experts estimate that ten times as much petroleum exists in sources like tar sands, heavy oil, and perhaps even in shale页岩，板岩than in conventional reservoirs.

A. sources like tar sands, heavy oil, and perhaps even in shale than

B. sources like tar sands, heavy oil, and perhaps even in shale than are

C. such sources as tar sands, heavy oil, and perhaps even in shale as are

D. such sources as tar sands, heavy oil, and perhaps even shale as

E. such sources as tar sands, heavy oil, and perhaps even shale than

 

我选择的是C，正确答案是D

我现在明白C是不对的，因为多了个are的话，前后是不对等的，但是如果D的话，是不是在shale前面应该有个in呢？请NN帮忙解析下，谢谢！

overthere33

前面已经有in的啊 如果你在and 后面加in 就变成 exist in such sources as tar sands, heavy oil 和 an perhaps even in shale这两个的平行了 这是不符合原文意思的 原文such sources是包括shale的 你加in就把shale排除在外了

蔻华施

god...明鸟！谢谢楼上滴GG....

emyzhong2009

C中的主句是ten times as much petroleum exists，没有be动词，因此补出助动词时，不能补are，因为主句没有与之对应的助动词。

兔子等着瞧

为什么A不对呢.....

serendipityh

应为是as much as...

FFcapm

my points:
1. such as
2. as much as
3. parallel

zanyingsan

因为A不能用like