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
GMAT考试中,经常使用插入语来增加句子的难度. 我们可以去掉这些插入语(如本题中的although那句)来检查句子主干的正
确性, 如果主干正确,再来看插入语的正确与否.
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