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

E没啥大问题，因为其他的问题实在太大，但是E里面although后面可以不跟完整的主谓结构吗？

可以

可以的,polio就是省略的主语.

ex:来一个简单的例句,感觉一下:

Although went to bed very late yesterday, I still got up early this morning.

Although I went to bed very late yesterday, I still got up early this morning.就有点罗索了

省略的前提是Although后面的主语和主句的主语是同一个.

Although the theft run fast,I still caught up him.这时候the theft就不能省了

除非是Although run fast, the theft was still caught up by me.

a选项：polio和后面的it重复，语法结构不合理