Although he knew little about the large amount of work done in the field , he succeeded ot

Although he knew little about the large amount of work done in the field , he succeeded other more well-informed experimenters failed.
A. as
B. unless
C. what
D. where

A. as B. unlessC. what D. where解析：where引导地点状语从句，在别的受过良好教育的实验者失败的地方，他却成功了。故选D。

就是这个解释

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