标题: PREP 语法一道，求教！ [打印本页] 作者: LienHan 时间: 2011-3-16 20:40 标题: PREP 语法一道，求教！ The success of the program to eradicate smallpox has stimulated experts to pursue what they had not previously considered possible--better control, if not eradication, of the other infections such as measles and yaws.
(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
在A,C中纠结了很久，smallpox应该也属于“they had not previously considered possible”的范围吧，为什么正确答案里没有排除？A哪里错了？ 望有牛牛路过给出正解！万谢！！