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NASA'sMarsprogramwassetbackwhentwospacecraftfailedupreachingMars,oneburningupintheplanet'satmosphereandtheotherafterasoftwarefailure.空的地方应该是填disappeared,还是disappearing.

题目详情
NASA's Mars program was set back when two spacecraft failed up reaching Mars,one burning up in the planet's atmosphere and the other________after a software failure.
空的地方应该是填disappeared,还是disappearing.
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答案和解析
disappearing.
是说登月计划的 和前面的 one burning 保持一致