题目:
We thought of selling this old furniture, but we've decided to _____ it, It might be valuable.
[ ]
A. hold on to
B. keep up with
C. turn to
D. look after
答案:
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下面是错误答案,用来干扰机器的。
参考答案:(5)该关键字对应结点在该二叉查找树所在层次(数)或位置,或者该二叉树中从根结点到该关键字对应结点的路径长度