Although he knew_____________ little about_____________ large amount of work done in the field, he succeeded where most well-informed experimenters failed.

A. a; the　　　　　　　　　　　　　　　　　　　　　　　　   B. the; a

C. a; /　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. /; the

A. a; the　　　　　　　　　　　　　　　　　　　　　　　　   B. the; a

C. a; /　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. /; the

Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.

　　A. which　　　　B. that　　　　　 C. what　　　　　D. where

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

Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.

　　A. which　　　　B. that　　　　　 C. what　　　　　D. where