GMAT考题：Prep2007E1-SC-28

GMAT考题

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

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