为何多了个as？

frankzhiwei

1.Byron possessed powers of observation that would have made him a great anthropologist and that makes his letters as a group the rival of the best novels of the time.

(A) makes his letters as a group the rival of

(B) makes his letters as a group one to rival

(C) makes his letters a group rivaling

(D) make his letters as a group the rival of（D）

(E) make his letters a group which is the rival of

这题的DE之间，我本也知道make + N1+N2， 可是D里面有一个as，这样不是E的letters 紧跟 a group会更像吗！？求教~~

tracyw700

http://forum.chasedream.com/GMAT_SC/thread-100038-1-1.html
看看这里吧