28.
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
(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
原文大致意思：polio这种东西虽然在美国eradicated了，但是在其它地方还是在继续并且被旅游者带进国家里。
题目分析：A没有明显错误，我们进行对比选项，AB上来都说polio，既然上来都已经说了主体了，后面就没有必要再用it了D用is capable of being显然没有CE的could好，我们比较C和E，这两个选项语义不一样，C强调的是eradicated和后面的被旅游者带入境形成并列，而E强调的是continues和被旅游者带入境形成对应，你觉得应该是哪两个形成对应？显然是continue和被旅游者带入境形成对应会好一些！选E。
