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　　GMAT逻辑题目内容　　

　　The Bluetail Moonbeam, endemic to the streams and rivers of Asia, is regularly imported into the United States by companies wishing to breed it for food. An infectious virus has been threatening Bluetail Moonbeam stocks in the United States. Even before a Bluetail Moonbeam develops any symptoms, biologists can establish the presence of the infection by an inexpensive test for antibodies in the fish's blood. Yet, after the instance of infection, antibodies take about four weeks to appear in the fish's blood, and the test will find no results before then. Catching a live Bluetail Moonbeam and shipping it to the United States takes a little more than a week. Once the Bluetail Moonbeam is in captivity, shippers can eliminate all new sources of infection, but unfortunately, some Bluetail Moonbeams might be infected days or even hours before being caught. Thus, even running the antibody test on each Bluetail Moonbeam entering the country would still allow infected fish into the American stocks.

　　Which of the following, if performed by the government, could logically be expected to overcome the problem with the plan to limit the spread of this virus in the Bluetail Moonbeam?

　　A.Funding research into either an inoculation or a cure for this viral infection.

　　B.Quarantining each imported Bluetail Moonbeam for at least three weeks, then performing the antibody test on each, and allowing only the uninfected to move into industrial stocks.

　　C.Requiring each Bluetail Moonbeam sold to be tagged with a tag indicating their date of capture.

　　D.Launching an educational campaign to make those industries that breed the Bluetail Moonbeam aware of the limitations of the antibody test for the virus.

　　E.Tracking the imported Bluetail Moonbeam into industry held stock, and for each imported fish, four weeks after capture, removing it from stock to be tested; only uninfected fish would be returned to stock.