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【单选题】
若类A中有如下的构造函数声明: A(int i=1, int j=2,int k=3); 则下列对象定义语句错误的是:A.
A a1;
B.
A a1();
C.
A a1(5);
D.
A a1(6, 7);
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反馈参考答案：
举一反三
【简答题】如图所示的二叉树先序遍历序列是 ,中序遍历序列是 ,后遍历序列是 。
【简答题】如下图所示的二叉树后序遍历序列是【 】。
【单选题】-- ________ do you hear from Karen this year? --Hardly ever.
A.
How long
B.
How often
C.
How many
D.
How much
【单选题】—_______ has your brother been a member of Trailwalker? —Ever since 2005. [ ]
A.
How far
B.
How often
C.
How long
D.
How soon
【单选题】---- _________ do you go to the cinema? ---- Hardly ever. I always see movies on TV.
A.
How long
B.
How often
C.
How soon
D.
How many times
【单选题】– do you go to the movies? – Hardly ever. I always see the films on the Internet.
A.
How long
B.
How often
C.
How much
【单选题】—_____ have you ever been to Hongkong? —Only once. [ ]
A.
How long
B.
How often
C.
How soon
D.
How many times
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