大全433

大全433

             Intended primarily to stimulate family summer travel, the new airfare, which allows both an adult and a child to fly for the price of one ticket, and also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than fourteen.

(A) and also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than

(B) and also lessens the advance-purchase requirement for family travel to a seven-day minimum from

(C) also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than that of

(D) also lessens the advance-purchase requirement for family travel to a seven-day minimum from

(E) also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than

答案：E。请教下这道题如何区分选C还是选E呢？好晕啊～

这是大全注释的解释：

我认为这里怎么判断，按照句义没有歧义前后对等应该就可以了。

than因为有比较的内容，限制得比较死，必须看清楚比较对象的前后对等和平行。

rather than，看清楚前后平行没有歧义就可以了。

恩，有道理。刚我又查了下前人的帖子，总结了两点：

1）比较的是seven days和forteen days，而不是比较两个minimum。

2）前面和后面的a minimum of重复，没啥必要又不歧义就省了。而且后面forteen days中相同的days都省了，前面没理由不省。

谢谢指教！