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【单选题】
$\lim_{x\to 0} \, \frac{2 x+3}{x+1}$A.
2
B.
3
C.
$\frac{1}{2}$
D.
$\frac{1}{3}$
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
按我国目前酒店的人员配备状况，平均每间客房约配备1-2人，若新建一座300间客房的酒店，将创造 ( ) 个直接就业机会。
A.
200-500
B.
300-600
C.
400-700
D.
500-800
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1/2
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1/(n-1)
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1/n
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【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：
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one third of the original height 三分之一
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half of the original height 一半
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zig-zag
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zag-zig
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zag-zag
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声明抽象方法，大括号可有可以没有
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抽象方法没有方法体
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正确
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错误
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0.012
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increase
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provoke
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Follow the lecture closely and look for opportunities to ask relevant questions.
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short and chubby, with each node having at most two children矮胖，每个节点至多两个孩子
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short and chubby, with each node having potentially many children矮胖，每个节点可有多于两个孩子
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tall and slim, with each node having at most two children瘦高，每个节点至多两个孩子
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tall and slim, with each node having potentially many children瘦高，每个节点可有多于两个孩子
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Alex, Abbas, Alice and Ruohui.
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Alex, Abbas, Jiehan and Billy.
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reduce the number of I/O operations 减少I/O次数
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reduce the time consumption for a single I/O 减少每次I/O的时间
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reduce the asymptotic time complexity for seaching 降低查找的渐进时间复杂度
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reduce the storage requirement 节省存储空间
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错误
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正确
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plagiarism, paraphrasing and summarizing
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a hour 1小时
B.
a day 1天
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a month 1月
D.
a year 1年
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$0$
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$1$
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$\frac{1}{2}$
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$2$
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$\frac{1}{3}$
B.
$3$
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$1$
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不存在
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1
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0
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-1
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不存在
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1
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-1
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0
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$+\infty$
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减轻医疗负担
B.
增强抵抗力
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减少疾病
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促进心理健康
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缓解精神压力
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Abbas, Zuowan and Jialin
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Billy, Xuanhui and Jialin
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Abbas, Xuanhui and Jialin
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Billy, Xuanhui and Zixiao
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Kamlesh
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Jason
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Abbas
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正确
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错误
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A.
1~4
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2~5
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2~4
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3~5
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brain development
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brain degradation
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human degeneration
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A.
正确
B.
错误
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A.
1/10
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3/10
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5/10
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A.
正确
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错误
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A.
None
B.
NULL
C.
A pointer to the last examined node 指向最后一个所查找节点的指针
D.
A pointer to the root 指向根节点的指针
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1/5
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1/7
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A.
7/120
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7/10
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1/120
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正确
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错误
【单选题】设随机变量\( X \)服从区间（0,2）上的均匀分布，则\(P(X^2>2) \)=（）
A.
$\sqrt2/2$
B.
$\sqrt2$
C.
$1-\sqrt2/2$
D.
$1-\sqrt2$
【单选题】当$k$为何值时$\lim_{x\to 4} \, \frac{k+x^2-x}{x-4}$极限存在
A.
$4$
B.
$0$
C.
$-4$
D.
$-12$
【单选题】Which of the following is NOT the reason why she does not like to take photos with the camera?
A.
It was easy to break
B.
It was too heavy
C.
it is easy to get stolen
D.
it is too expensive
【单选题】设圆的直径服从区间（0,1）上的均匀分布，则圆的面积在（0,\(\pi\)）上的密度函数为（）
A.
1/2
B.
1
C.
3/2
D.
2
【单选题】What “eat earth” means?
A.
Having to spend less after spending a lot during the shopping festival.
B.
Living a luxurious life after earning a lot of money.
C.
Having failed to live a modest life.
D.
Living a luxurious life.
【单选题】Popular novels can be adapted and made into ____; ____ and _____.
A.
films; television programs; video games
B.
cartoons; dramas; games
C.
websites; televisions; audio programs
D.
films; cartoons; games
【单选题】下面说法中错误的是
A.
FileReader类是Reader类的间接子类
B.
InputStreamReader类是Reader类的子类
C.
BufferedReader类可以读取一行
D.
BufferedReader的readLine()函数，如果没有数据时会返回0
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