As U.S. nuclear attack submarines prowl their familiar haunts deep within the oceans of the world these days, they increasingly are engaged in missions far different from the tasks for which they were built and for which their crews were trained over the last forty years.
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Athey increasingly are engaged in missions far different from the tasks for which they were built
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Bthe missions they increasingly engage in are far different than the tasks they were built for
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Cthey engage increasingly in missions that differ significantly from the tasks they were built for
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Dthe missions they engage in are increasingly different than the tasks for which they were built
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Ethey increasingly engage in missions far different than the tasks for which they were built
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正确答案: A