[求助]请教大全352

1.                             In 1933 the rubber, clothing, and shipbuilding industries put into effect a six-hour workday, believing it a seeming permanent accommodation rather than a temporary expedient for what many observers thought was an economy made overproductive by advances in technology.

(D) not as a temporary expedient but as a seemingly permanent accommodation to what many observers thought was

答案是D，我觉得D中的was好象不对，应该用as，请大家指点

NN们互相吹捧,好有趣啊. 不过受益匪浅,谢谢啦.

再顶

请教tianwan大侠，复合式定语从句得性质是不是就像插入语一样，可以略去不看？偶用的式Longman的语法书，似乎没有这个语法点？？

not as a temporary expedient but as a seemingly permanent accommodation to what many observers thought was（D）

to what后面的成分怎么解释，如果是插入语那么to what(many observers thought) was an economy是什么呀？

not as a temporary expedient but as a seemingly permanent accommodation to what many observers thought was

to what(many observers thought)was  an economy怎么解释？？

什么是what was an economy呢？