There is nowhere in early American literature where the influence of Jane Austen is so apparent as the novels of James Fenimore Cooper.

A. There is nowhere in early American literature where the influence of Jane Austen is so apparent as

B. In early American literature, nowhere is Jane Austin's influence so apparent than in

C. It is nowhere more apparent in early American literature that Jane Austen was an influence as in

D. Nowhere in early American literature is the influence of Jane Austen more apparent than in

E. Nowhere in early American literature is it more apparent that Jane Austen had an influence than

I've totally got no clue...

B/C里面不符合more..than 结构

Dthan前后的比较对象不一致 前面是influence后面是in...的介词短语

E 因为Nowhere in early American literature 短语带有否定词,且置于句首 ,后面it is...that..是强调结构的部分倒装 强调部分是more apparent 实际应该是Jane Austen had an influence more apparent than the novels of James Fenimore Cooper.

但是我有一个疑问E中为什么than后面不是than did the novels of James Fenimore Cooper呢

为什么少了did?这样 比较前后不是不对等了吗?

楼上正解，至于为什么不用did，可解释如下：

I eat more apple than you do,

I eat more apple than you       有歧义

I eat more than you

如果又出现subjective and objective, the did is needed to 确认谁被修饰

如果只有主语，则助动词可省

此处很明显novels of James F. C是做主语的，did可省