(A) what they had not previously considered possible--better control, if not eradication, of the other infections such as

 (A) what they had not previously considered possible--better control, if not eradication, of the other infections such as

 (A) what they had not previously considered possible--better control, if not eradication, of the other infections such as

(B) what they had not previously considered a possibility--better control, if not eradication, of such infections like

(C) something they had not previously considered possible-better control, if not eradication, of such infections as

(D) something not considered a previous possibility--better control and perhaps eradication, of other infections such as

(E) the possibility of what they had not previously considered--better control and possibly eradication of infections like

答案是C，A不对在哪里？C为什么不用other排除smallpox？

因为说，if not eradication。所以不other

原题说eradicate smallpox的成功的项目激发....