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单项选择题下面选项中t不是s的子序列的是()

A、s=<{2,4},{3,5,6},{8}>t=<{2},{3,6},{8}>

B、s=<{2,4},{3,5,6},{8}>t=<{2},{8}>

C、s=<{1,2},{3,4}>t=<{1},{2}>

D、s=<{2,4},{2,4}>t=<{2},{4}>

  • C
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