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【单选题】
按( )方法遍历二叉排序树可以得到一个从小到大的有序序列。A.
先序遍历
B.
中序遍历
C.
后序遍历
D.
层次遍历
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反馈参考答案：
举一反三
【单选题】- Mum, may I go swimming now? -Yes, dear, but remember that you go with your dad.
A.
may
B.
can
C.
must
【单选题】— May I go swimming now? — No, you ______. You must finish your homework first. [ ]
A.
mustn't
B.
may not
C.
couldn't
D.
needn't
【单选题】–Mom, may I go swimming with my friends in the river? –No, you _________. That’s too dangerous.
A.
won’t
B.
don’t
C.
needn’t
D.
mustn’t
【单选题】--Mom,may I go swimming now? --Yes,dear,but remember that you __go with your dad.
A.
may
B.
can
C.
must
【单选题】----May I go swimming this afternoon? ----I'm afraid not _______ you have finished your homework.
A.
unless
B.
because
C.
if
D.
though
【单选题】—May I go swimming this afternoon? — I'm afraid not _______ you have finished your homework.
A.
if
B.
unless
C.
because
D.
but
【单选题】—Mum, may I go swimming now? —Yes, dear, but remember that you _______ go with your dad.
A.
may
B.
can
C.
must
D.
/
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