【单选题】【消耗次数：1】
下面叙述正确的是（ ）。
①
二叉树是特殊的树
②
二叉树等价于度为2的树
③
完全二叉树必为满二叉树
④
二叉树的左右子树有次序之分
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相关题目
【单选题】
下列有关二叉树的说法正确的是（ ）。
①
A．二叉树中度为0的结点的个数等于度为2的结点的个数加1
②
B．二叉树中结点个数必大于0
③
C．完全二叉树中，任何一个结点的度，或者为0或者为2
④
D．二叉树的度是2
随机题目
【单选题】
This book is ________ that one. But __________ than that one.
①
as difficult as ;expensive
②
as more difficult as ; more expensive
③
as difficult as ; more expensive
④
more difficult as ; as expensive
【单选题】
This box is ________ that one.
①
heavy than
②
so heavy than
③
heavier as
④
as heavy as
【单选题】
-Whats your brother like?
-He is _________.
①
adriver
②
very tall
③
myfriend
④
atschool
【单选题】
Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.
①
went to ; is coming
②
has gone to ; will come
③
has been to ; will be
④
is going to ; has come
【单选题】
This bright girl __________ the truth in front of the enemy.
①
didn’t say
②
couldn’t speak to
③
said
④
didn’t tell
【单选题】
Every time I _________ there, I will buy him something nice.
①
went
②
will go
③
go
④
have gone
【单选题】
The bridge which ________ last year looks really beautiful.
①
was built
②
built
③
was set up
④
had been built