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
1) 现在分词的完成时态不能作定语修饰名词: 如 evidence having been proved…是错误的,可以
改为 evidence proved… 或evidence that have been proved…
2) be able to do和can的区别: 前者表示拥有某种能力去做某事,强调的是能力;后者表示可能去做
某事,表现了一种可能性
(A) be able to do不合适; it continues中的it多余,因为去掉插入语although后,句子变为Polio it continues…,it和Polio重复
(B) it多余
(C) 随意替换Although的内容, 更改了原句的意思
(D) having been eradicated使用错误,应该去掉having been; is capable of being表示拥有某种能
力,用在此处不合适
(E) 正确, 整个句子简洁,表达清晰,用could表达一种可能性
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