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
Polio, although eradicated in the United States, it still continues elsewhere and can be
Although still continuing elsewhere, polio has been eradicated in the United States and could be
Although having been eradicated in the United States, polio still continues elsewhere and is capable of being
Although eradicated in the United States, polio continues elsewhere and could be
C,主句是”在美国被消除了“,“在其他地方还肆虐”做状语,修饰主句。语意逻辑应该是强调“其他地方还有,主从句反了;and连接了两个有转折意思的句子,应该用but
D,be capable of doing通常修饰无生命物体,也可以指修饰有生命,表示有能力做某事。able/capable/enable都不能接被动式,不能有能力被如何如何;can 可以接被动式
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