求助新prep1－175

175.
        (27069-!-item-!-188;#058&002220)

Experts estimate that ten times as much petroleum exists in sources like tar sands, heavy oil, and perhaps even in shale 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

这个题目首先因为举例要用such as ，我排除了A和B，然后as，，，as，要成对出现，并且比较对象要对等，但是我选了C，担安是D，有没有人能够帮我解释一下，C怎么不对？谢谢。

189.
        (25949-!-item-!-188;#058&001761)

She was less successful after she had emigrated to New York compared to her native Germany, photographer Lotte Jacobi nevertheless earned a small group of discerning admirers, and her photographs were eventually exhibited in prestigious galleries across the United States.

A. She was less successful after she had emigrated to New York compared to

B. Being less successful after she had emigrated to New York as compared to

C. Less successful after she emigrated to New York than she had been in

D. Although she was less successful after emigrating to New York when compared to

E. She had been less successful after emigrating to New York than in

我觉得

不能说 after之后加 ed分词就错了。连词+分词的本质是省略结构。还原回去是 conj+link verb+participle

连词 after之后加省略结构被动 没什么问题。但问题是emigrate这个词本来就有主动表达的形式，去用被动很奇怪。比如即使不省略 这样用也很奇怪：

After he was emigrated to blablabla...

因为本来就不对，你把 he was省掉就更不对。