请教OG12-76

daier

76.Retailers reports moderate gains in their November sales,as much because of their sales of a year earlier being so bad as that shoppers were getting a head start on buying  their holiday gifts.
A.of their sales of a year earlier being so bad as that
B.of their sales a year earlier having been as bad as because
C.of their sales a year earlier being as bad as because
D.their sales a year earlier had been so bad sa because
E.their sales of a year earlier were as bad as that

正确答案是D。 OG是这样解释的：These two reasons are introduced with a formula that requires parallel structure:As much because X as because Y.这样解释我能明白，就是为了保持平行。我不明白的是As much because X as because Y这是个什么结构阿？这个结构的具体含义又是什么？希望有nn帮我解释一下，谢谢啦

nancyyen

我理解这个实质是as much as的复杂形势， as much because 从句 as because 从句， 既是因为。。。也是因为。。。

10gmat

我的理解是：Retailer在11月份的销量呈现了适度的增长，一方面是因为去年同期的销售实在是很不好，另一方面也是因为 shopper一开始大量从他们那里购买节日礼品----个人理解哈

Christianyang

也不懂。。。

mia113

我认为就是把as much as中间插入了一个原因状语，(as...as结构要平行 ) 所以这两个原因状语结构平行 表示对moderate gains有相同分量的解释