[求助]prep1-28的疑惑，望大侠指点

28.   (26003-!-item-!-188;#058&002229)

Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.

Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.

(A) Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

(A) Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

(B) Polio, although eradicated in the United States, it still continues elsewhere and can be

(C) Although still continuing elsewhere, polio has been eradicated in the United States and could be

(D) Although having been eradicated in the United States, polio still continues elsewhere and is capable of being

(E) Although eradicated in the United States, polio continues elsewhere and could be

答案是E，但是我怎么觉得E的although部分应该是用被动啊？Although is eradicated in the ...., polio continues...
    

PS，E选项除了被动的问题，还有，although引导的句子是否要求完整啊？感觉连词应该连一个完整的句子啊？

问题狠弱，请大家别嫌弃。

it is ok.

eradicated is to modify "polio".

you can also evaluate from "can be, could be" but not "be able to, or capable of" in this case.

Hope it helps.