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【单选题】
In the Student Research Project, in which Alex, Abbas, Jiehan and Huanrui had a deeper discussion on the topic of _______.A.
intelligence across cultures
B.
pop culture in the Arab world
C.
academic writing skills
D.
getting along verbally and non-verbally
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收藏参考答案：
举一反三
相关题目：
【单选题】Choose the most appropriate answer by completing the sentences below or answering the questions.1. Which of the following statement is NOT true?
A.
Alex prefers to stay indoors, because he feels discomfort.
B.
Alex prefers to stay indoors, because he wants to read novels.
C.
His eyes hurt, because it is heavily polluted in Beijing.
D.
Alex has a sore throat.
【单选题】根据本题题干回答以下（1）（2）题某班级学生的考试成绩数学不及格的占15%，语文不及格的占5%，这两门课都不及格的占3%（1）已知一学生数学不及格，他语文也不及格的概率是多少？
A.
0.2
B.
0.375
C.
0.5
D.
0.6
【单选题】下面结论正确的是
A.
$\lim_{x \to a} f(x)$不存在,则该点$f(x)$没有定义
B.
如果$f(x)$连续且$f(a)=0$,那么$x \to a$时,$\frac{1}{|f(x)|} \to +\infty$.
C.
极限存在不一定唯一
D.
数列的子列收敛则数列一定收敛
【单选题】在平面上画有间隔为$d$的等距平行线，向平面任意投掷一个边长为$a,b,c$（均小于$d$）的三角形，求三角形与平行线相交的概率
A.
$\frac{a+2b+c}{2{\pi}d}$
B.
$\frac{a+b+c}{{\pi}d}$
C.
$\frac{a+b+2c}{{\pi}d}$
D.
$\frac{a+b+c}{2{\pi}d}$
【单选题】$\lim_{N\to \infty } \, \left(\sum _{n=1}^N \frac{1}{n!}\right)$
A.
$e$
B.
$e-1$
C.
$\infty$
D.
$2e$
【单选题】Choose the sub-tree after applying 3+4 reconstruction to the tree above.对以上子树进行3+4重构，得到的子树为：
A.
B.
C.
D.
【单选题】$\lim_{x\to 1^+} \, \tan ^{-1}\left(\frac{1}{1-x}\right)$
A.
${\pi}$
B.
$\frac{\pi}{2}$
C.
$-\frac{\pi}{2}$
D.
$-{\pi}$
【单选题】People with different educational experiences may develop different ______.
A.
language proficiency
B.
characteristics
C.
personalities and abilities
D.
friendship
【单选题】Which property of data access is taken advantage of by splay trees?伸展树利用了实际问题中数据访问的何种特点：
A.
massiveness 大量性
B.
locality 局部性
C.
holisticity 整体性
D.
diversity 多样性
【单选题】Researchers used technologies such as MRI to study _____ and _____ of human brain for boys and girls at different stages.
A.
the structure; function
B.
the composition; role
C.
the structure; size
D.
the chemistry; volume
【单选题】Choose the most appropriate answer by completing the sentences below or answering the questions.1. Boys and girls are different in developmental process. Which of the following statement is true?
A.
The psychological development of boys is faster than that of girls.
B.
The brain development of girls is faster than that of boys.
C.
The physical development of girls is faster than that of boys.
D.
The mental development of boys is faster than that of girls.
【单选题】Which operation is executed for each accessed node in a splay tree?伸展树每次访问过某节点后都会把该节点：
A.
removing it 删除
B.
moving it to the higer level 上移一层
C.
moving it to the root 移动到根节点
D.
accessing it again 再次访问该节点
【单选题】Where do they often exercise?
A.
In the school playground.
B.
In the gymnasium.
C.
Go to the local sport center.
D.
In a fitness club with personal training services
【单选题】下列说法错误的是:()
A.
生命教育就是以生命为核心,以教育为手段,倡导认识生命、珍惜生命、尊重生命、爱护生命、享受生命、超越生命的一种提升生命质量、获得生命价值的教育活动;
B.
生命教育,就是在生命活动中,通过生命活动和为了生命而进行的教育;
C.
生命活动不是实践活动;
D.
生命教育是为了生命而进行的教育。
【单选题】根据本题题干回答以下（1）（2）题两个车床加工同一种鞋，已知甲车床出现不合格品的概率为0.02，乙车床出现不合格品的概率是0.04，加工出来的鞋子放在一起，并且已知甲车床加工的鞋子数量是乙车床的两倍（1）、任取一双鞋子合格的概率是
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0.027
B.
0.03
C.
0.973
D.
0.97
【单选题】根据本题题干回答以下（1）（2）题某商店出售成箱装的碗，每个箱子中有20个，现假设每个箱子中含有0、1、2个次品的概率各为0.7,0.2,0.1。一个顾客想要购买一箱碗，售货员随意为他挑选了一箱，顾客打开箱子随机的查看4只碗，如果没有次品，那么就买下这箱碗，否则退回（1）、顾客买下该箱的概率为
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0.923
B.
0.764
C.
0.936
D.
0.864
【单选题】What's the amortized complexity for a single splay operation in Tarjan's algorithm?按照Tarjan的伸展算法，单次伸展操作的分摊复杂度为：
A.
O(1)
B.
O(lgn)
C.
O(n)
D.
O(nlgn)
【单选题】在本节中，我们学过了如何将中缀表达式转化为逆波兰表达式，那么反过来，思考一下如何将逆波兰表达式还原为中缀表达式呢？试将下列逆波兰表达式还原为中缀表达式：1 2 + 3 4 ^ *
A.
(1-2)*3^4
B.
(1+2)*3^4
C.
(1+2)^3*4
D.
(1+3)*2^4
【单选题】A splay tree degenerates into a list. What's its height after accessing the lowest node?在一棵退化成单链的伸展树中访问其最深的节点，经过伸展后树高大约为原先的：
A.
one third of the original height 三分之一
B.
half of the original height 一半
C.
the original height 不变
D.
twice the original height 两倍
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A.
never
B.
hardly ever
C.
despite what has just been said or referred to
D.
seldom
【单选题】Choose the most appropriate answer by completing the sentences below or answering the questions.1. Which of the following is not mentioned in this dialogue? The differences in adolescence and adult ar...
A.
thoughts, ways of doing things
B.
ways of doing things, attitudes towards her parents
C.
my attitudes towards my parents
D.
my attitudes towards my teachers
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A.
zig-zag
B.
zag-zig
C.
zig-zig
D.
zag-zag
【单选题】下面的说法正确的是
A.
abstract可以修饰字段、方法和类
B.
抽象方法的body部分必须用大括号包住，但是需要为空
C.
声明抽象方法，大括号可有可以没有
D.
抽象方法没有方法体
【单选题】I could hear the ______ of Mozart in the background.
A.
delight
B.
strains
C.
amusement
D.
pleasure
【单选题】如果$\lim_{n\rightarrow \infty}a_n \lt \lim_{n\rightarrow \infty}b_n$,那么$n$足够大时,$a_n \lt b_n$
A.
正确
B.
错误
【单选题】根据本题题干回答以下（1）（2）（3）题设电路由A, B, C三个元件组成，若元件A, B, C发生故障的概率分别是0.3, 0.2, 0.2，且各元件独立工作，试在以下情况下，求此电路发生故障的概率（1）、A, B, C三个元件串联；
A.
0.012
B.
0.328
C.
0.448
D.
0.552
【单选题】Thinking angry thoughts can ______ strong physiological arousal.
A.
increase
B.
evolve
C.
provoke
D.
elicit
【单选题】根据本题题干回答以下（1）（2）题假设P (A) = 0.4，P (A∪B) = 0.9，在以下情况下求P (B)：（1）A, B不相容；
A.
0.5
B.
0.6667
C.
0.8333
D.
0.9
【单选题】The children’s excitement is _____ as Christmas gets nearer.
A.
mounting
B.
escalating
C.
amounting
D.
descending
【单选题】What's the amortized complexity in a sufficiently long sequence of accessing k nodes in a splay tree of size n?规模为n的伸展树中若所访问的节点只有k个，经过足够长时间的访问序列后，访问的分摊复杂度为：
A.
O(lgk)
B.
O(klgn)
C.
O(nlgk)
D.
O(lgn)
【单选题】The recession has forced a lot companies to cut down on graduate ( ).
A.
recruitment
B.
enrolment
C.
arrangement
D.
deployment
【单选题】若所有print方法均为static，则其结果输出为
A.
Manager Employee
B.
Person Person
C.
Manager Person
D.
Person Manager
【单选题】$\lim_{x\to \frac{\pi }{3}} \, \frac{\sin (x)}{\cos (x)+1}$
A.
$\frac{1}{\sqrt{3}}$
B.
$-\frac{1}{\sqrt{3}}$
C.
$\frac{1}{2}$
D.
$-\frac{1}{2}$
【单选题】Why does the memory becomes smaller and smaller?内存“越来越小”的原因是：
A.
With more and more processes running on one computer, the average memroy size for each process is getting smaller 机器上运行的程序越来越多，平均每个程序使用的内存变小
B.
The real-world applications call for rocketing memory storage 实际应用对存储的需求急剧增长
C.
The silicon used for producing chips is soon running out 用于制造内存芯片的硅资源消耗殆尽
D.
The physical size of memory chips is getting smaller thanks to the advances in technology 随着工艺的进步，内存的体积变小，集成度变高
【单选题】How to engage in other people’s discussion in a seminar when you are not fully prepared?
A.
Follow the lecture closely and look for opportunities to ask relevant questions.
B.
Pretend you’re fully prepared and listen carefully
C.
Ask people around for help
D.
Record all the lecture and learn it later by yourself
【单选题】$\lim_{x\to 1} \, \frac{x^3-1}{x^4-1}$
A.
$1$
B.
$\frac{3}{4}$
C.
$\frac{4}{3}$
D.
$-1$
【单选题】The baby carrying the DNA of three parents is an experimental specimen, aiming at ______.
A.
having more babies
B.
having babies with genetic modification
C.
eliminating genetic diseases in newborns
D.
innovating in the field of life science
【单选题】B-trees are 树结构上的特点是：
A.
short and chubby, with each node having at most two children矮胖，每个节点至多两个孩子
B.
short and chubby, with each node having potentially many children矮胖，每个节点可有多于两个孩子
C.
tall and slim, with each node having at most two children瘦高，每个节点至多两个孩子
D.
tall and slim, with each node having potentially many children瘦高，每个节点可有多于两个孩子
【单选题】In the Student Research Project part, in which ______ had a deeper discussion on the intriguing topic of “the world’s first baby born with the DNA from 3 parents”.
A.
Alex, Abbas, Alice and Ruohui.
B.
Alex, Abbas, Jiehan and Billy.
C.
Alex, Abbas, Alice and Saba.
D.
Alex, Abbas, Jiehan and Huanrui.
【单选题】根据本题题干回答以下（1）（2）（3）题已知5只动物中有1只患有某种疾病，需要通过化验血液来确定患病的动物，血液结果呈阳性的即为患病动物，呈阴性的即没有患病。下面是两种化验方案：方案甲 逐个化验，知道能确定患病动物为止方案乙 先任取3只，将它们的血液混在一起化验。若结果呈阳性则表明患病动物为这3只中的1只，然后再逐个化验，知道能确定患病动物为止；若结果呈阴性则在另外2只中任取1只化验。（1）、求方...
A.
1/5
B.
2/5
C.
1/2
D.
3/5
【单选题】B-trees have small height so as to B树的层数少有助于：
A.
reduce the number of I/O operations 减少I/O次数
B.
reduce the time consumption for a single I/O 减少每次I/O的时间
C.
reduce the asymptotic time complexity for seaching 降低查找的渐进时间复杂度
D.
reduce the storage requirement 节省存储空间
【单选题】In the Academic Writing part, Alex discussed with Ruoqi on academic skills, such as ______.
A.
plagiarism, paraphrasing and summarizing
B.
plagiarism, paraphrasing and synthesizing
C.
how to avoid plagiarism, paraphrase and summarize
D.
how to avoid plagiarism, paraphrase and synthesize
【单选题】If it would take us a second for a single memory access, how long would it cost for a single access to the external storage?如果说访问一次内存需要1秒，则一次外存访问大概需要：
A.
a hour 1小时
B.
a day 1天
C.
a month 1月
D.
a year 1年
【单选题】$\lim_{x\to \infty } \, \left(\sqrt{x+\sqrt{x+\sqrt{x}}}-\sqrt{x}\right)$
A.
$0$
B.
$1$
C.
$\frac{1}{2}$
D.
$2$
【单选题】$\lim_{n\to \infty } \, \frac{\ln (n)}{\ln (3 n)}$
A.
$\frac{1}{3}$
B.
$3$
C.
$1$
D.
不存在
【单选题】Through the group discussion between ______ , we figured out the differences between adolescence and adulthood.
A.
Abbas, Zuowan and Jialin
B.
Billy, Xuanhui and Jialin
C.
Abbas, Xuanhui and Jialin
D.
Billy, Xuanhui and Zixiao
【单选题】In the main part of Text A, ______ showed us some opinions on the relationship between musical experiences and intelligence.
A.
Kamlesh
B.
Jason
C.
John
D.
Abbas
【单选题】What's the time complexity for searching in a B-tree of order 4 and size n?在存储了n个元素的4阶B树中查找，单个节点进行一次查找的时间复杂度为：
A.
O(1)
B.
O(lgn)
C.
O(n)
D.
O(nlgn)
【单选题】下面说法正确的是
A.
FileWriter类是Writer类的子类
B.
FileWriter类是OutputStreamWriter类的子类
C.
FileWriter类是FileOutputStream类的子类
D.
Wirter类是OutputStreamWriter类的子类
【单选题】How many children are there for each node in a B-tree of order 4?4阶B树中每个节点的分支数为：
A.
1~4
B.
2~5
C.
2~4
D.
3~5
【单选题】During the conversation between Billy, Yuege and Yunpeng, we took a brief look at ______ .
A.
brain development
B.
brain degradation
C.
human evolution
D.
human degeneration
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