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【简答题】
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举一反三
【单选题】在线索化二叉树中,t 所指结点没有左子树的充要条件是 ( )
A.
t -> lchild = NULL；
B.
t -> ltag = 1；
C.
t -> ltag = 1 且 t -> lchild = NULL ；
D.
以上都不对；
【单选题】在线索化二叉树中，t所指结点没有左子树的充要条件是( )
A.
t->ltag==1
B.
t->leftchild==NULL
C.
t->ltag==1且t->leftchild==NULL
D.
以上都不对
【简答题】浙教版九年级下册科学作业本A第二章第四节生态系统的结构和功能（四）答案
【单选题】He went away whistling, the dusty old book______beneath his arm.
A.
tucking
B.
to be tucked
C.
tucked
D.
having tucked
【简答题】浙教版七年级下册科学作业本A第一章第四节植物的一生（一）答案
【单选题】Away _____ and in ______. [ ]
A.
went he; came his sister
B.
he went; his sister came
C.
went he; his sister came
D.
he went; came his sister
【单选题】His eyes from the book . He stared at the wall and then went back to reading for a little.
A.
mixed
B.
sought
C.
carried
D.
wandered.
【单选题】在线索化二叉树中, t 所指结点没有左子树的充要条件是 。
A.
t - >left= =NULL
B.
t - >ltag= =1
C.
t - >ltag= =1 且 t - >left= =NULL
D.
以上都不对
【简答题】A．He went to the library twice to look for the book. B．He already returned the book to a library out of town. C．He called the library to say the book would be overdue. D．He couldn't return the library...
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