设有下列二叉树：
对此二叉树前序遍历的结果为（）
A.ZBTYCPXA
B.ATBZXCYP
C.ZBTACYXP
D.ATBZXCPY
参考答案：B
解析：
本题考查二叉树的遍历。
[解题要点] 所谓二叉树的前序遍历(DLR)是指在访问根结点、遍历左子树与遍历右子树这3者中，首先访问根结点，然后遍历左子树，最后遍历右子树，并且，在遍历左右子树时，上述规则同样适用，即“根-左-右”。故该二叉树的前序遍历结果为“ATBZXCYP”。
[考点链接] 对于本题，若使用后序遍历和中序遍历的结果分别为“ZBTYCPXA”和“TZBACYXP”。
 Neatly putting an emphasis on his storytelling skill is how writer Mo Yan began his Nobel Lecture in Literature speech, “Storyteller”, on Friday （Saturday, Beijing time） in Stockholm. For 40 minutes he talked about his mother’s 36 on him as a person and a writer, his literary inspirations, and how he 37 with the controversy（争论）that followed the announcement of his Nobel victory. He told his audience that as a boy he told stories to cheer up his mother, and 38 that poverty and loneliness fueled his imagination as a writer after he grew up. 39 , authors such as William Faulkner and Gabriel Garcia Marquez 40 him, he said, especially their bold and unlimited writing style. “A person should be 41 in daily life, but follow one’s instinct（本能）and take control when it 42 to literary creation.” He said the soul of 43 all of his works is the boy in Transparent Carrot who has an almost superhuman ability to bear 44 . He added that he also tried to make his hometown of Gaomi in Shandong Province a microcosm（缩影）of China and even the 45 . His greatest challenge, he said, was writing novels that deal with 46 realities. “In writing about the dark aspects of society there is a（n） 47 that emotions and anger allow politics to limit literature.” He said literature must be 48 on real life but go beyond it. He also mentioned the 49 surrounding his selection as Nobel winner, saying he was showered with many flowers. 50 he was a target for “stone throwers”. “At first I thought I was the 51 of the controversies, but over time I’ve come to realize that the real target was a person who had 52 to do with me.” Mo 53 his lecture by saying he was made to feel like an actor in a play with all the attention he was 54 , but he had decided that the best way to communicate his thoughts was to __55 writing.
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