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【单选题】
What does “subtle” mean there?
A.
evident
B.
clear
C.
not obvious
D.
apparent
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参考答案：
举一反三
【单选题】What does “turn out” imply?
A.
The reason for doing something.
B.
Something happens in that way or has the result the consequence of something.
C.
The potential risk of doing something.
D.
The original plan of doing something.
【单选题】What's unique about red-black trees compared to AVL trees? 红黑树相比于AVL树的特点是：
A.
The balance factor of each node falls within [-1, 1] 每个节点的平衡因子的绝对值不超过1
B.
It is a balanced binary search tree 是平衡二叉搜索树
C.
The search time is O(lgn) 支持O(lgn)时间的查找
D.
The topology changes no more than O(1) after each insertion/deletion每次插入/删除后拓扑结构的变化不超过O(1)
【单选题】You may choose one or more than one correct answer(s).1. Why is the student coming for the teacher?
A.
He quarreled with his classmates.
B.
He was stressed about the college entrance examination.
C.
He missed several classes due to illness
D.
He was often stressed when he faced an academic problem.
【多选题】好的选题从哪里来？
A.
知己知彼：你对一个领域的了解程度会直接影响你的选题
B.
现实需求：真正来自现实生活的需求最有生命力（洞察力）
C.
长期思考：有的问题需要多年的思考
D.
宽广胸怀：一个人的出发点直接决定了选题可能的高度
E.
好的选题非一日之功
【单选题】下列集合中，有最大值的集合是 ( ).
A.
$ \{x|x\in (0,1),x\in Q\} $
B.
自然数集
C.
有限个数构成的集合$ \{a_1,a_2,\cdots,a_n\} $
D.
$ \{x\in R|x^2-2x-3 < 0\}$
【单选题】$ \bigcup\limits_{n = 1}^\infty {(1 + \frac{1}{n},2 - \frac{1}{n})} = $ ( ).($\bigcup\limits_{n = 1}^\infty$表示n从1取到无穷相应的所有集合取并集)
A.
$(1,2)$
B.
$[1,2)$
C.
$(1,2]$
D.
$[1,2]$
相关题目：
【单选题】What does “turn out” imply?
A.
The reason for doing something.
B.
Something happens in that way or has the result the consequence of something.
C.
The potential risk of doing something.
D.
The original plan of doing something.
【单选题】What's unique about red-black trees compared to AVL trees? 红黑树相比于AVL树的特点是：
A.
The balance factor of each node falls within [-1, 1] 每个节点的平衡因子的绝对值不超过1
B.
It is a balanced binary search tree 是平衡二叉搜索树
C.
The search time is O(lgn) 支持O(lgn)时间的查找
D.
The topology changes no more than O(1) after each insertion/deletion每次插入/删除后拓扑结构的变化不超过O(1)
【单选题】You may choose one or more than one correct answer(s).1. Why is the student coming for the teacher?
A.
He quarreled with his classmates.
B.
He was stressed about the college entrance examination.
C.
He missed several classes due to illness
D.
He was often stressed when he faced an academic problem.
【多选题】好的选题从哪里来？
A.
知己知彼：你对一个领域的了解程度会直接影响你的选题
B.
现实需求：真正来自现实生活的需求最有生命力（洞察力）
C.
长期思考：有的问题需要多年的思考
D.
宽广胸怀：一个人的出发点直接决定了选题可能的高度
E.
好的选题非一日之功
【单选题】下列集合中，有最大值的集合是 ( ).
A.
$ \{x|x\in (0,1),x\in Q\} $
B.
自然数集
C.
有限个数构成的集合$ \{a_1,a_2,\cdots,a_n\} $
D.
$ \{x\in R|x^2-2x-3 < 0\}$
【单选题】$ \bigcup\limits_{n = 1}^\infty {(1 + \frac{1}{n},2 - \frac{1}{n})} = $ ( ).($\bigcup\limits_{n = 1}^\infty$表示n从1取到无穷相应的所有集合取并集)
A.
$(1,2)$
B.
$[1,2)$
C.
$(1,2]$
D.
$[1,2]$
参考解析：
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