[求助]请教大全352

cheermeng

In 1933 the rubber, clothing, and shipbuilding industries put into effect a six-hour workday,  not as a temporary expedient but as a seemingly permanent accommodation to what many observers thought was an economy made over-productive by advances in technology.

根本上是一个同位语加嵌入式关系分句的整合题。何出此言呢，正如2楼所言，嵌入式关系分句又叫复合定语从句，但是，what开头显然不是定语从句，而楼上的例句（包括gmat中其他嵌入式关系分句）sb之前都是以that和which开头。显然这个搭配不能简单认为是复合定语从句。

白勇说 what many observers thought was这个部分是个同位语结果，一语中的。我们都知道what引导的名词性从句可以看作sth that
In 1933 the rubber, clothing, and shipbuilding industries put into effect a six-hour workday,  not as a temporary expedient but as a seemingly permanent accommodation to sth {that（ many observers thought） was an economy made over-productive by advances in technology}.

实际上就是一个同位语加上嵌入式分句的组合。幸运的是这道题可以通过排除法得到D这个答案。