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【单选题】
在常用的描述二叉排序树的存储结构中，关键字值最大的结点是( )。A.
左指针一定为空
B.
右指针一定为空
C.
左右指针均为空
D.
左右指针均不为空
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反馈参考答案：
举一反三
【简答题】家庭美术教育有哪些方法？
【单选题】The house was very quiet, ____ as it was o n the other side of a mountain. being isolated isolated isolating having been isolated
A.
being isolated
B.
isolating
C.
isolated
D.
having been isolated
【简答题】__________。 [A] devoted [B] confused [C] sensible [D] isolated
【简答题】听力原文： The cigarette industry began in the 1870s with the development of the cigarette manufacturing machine. This made it possible to produce great numbers of cigarettes very quickly, and it reduced t...
【单选题】Bows and arrows have _______ been out of use.
A.
long after
B.
long before
C.
before long
D.
long since
【简答题】家庭美术教育有哪些方法?
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