某二中有 n 个度为 2 的结点,则该二中的叶子结点为 A) n+1 B) n-1 C) 2n D) n/2
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【简答题】阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项。 D The first MP4 player was born years ago. Soon many music fans were wondering how fantastic it is! If you have been into technology enough, perhaps you may have a kn...