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名前：Merle日付：2014/12/26 20:56:10
Who do you work for? personal essay for college entrance NASA ended its 30-year space shuttle program in 2011, leaving Russia's Soyuz capsules as the sole means to transport crews to the station, a service that costs the United States more than $70 million per person. NASA hopes to buy rides commercially from a U.S. company by 2017.
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