【单选题】

A.
3/5
B.
12/19
C.
5/19
D.
10/19

A.

B.

C.

D.

E.

A.

B.

C.
⾎红蛋⽩
D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.
2，4－⼆硝基氟苯
C.
β－巯基⼄醇
D.

E.

A.
L-α-氨基酸
B.
D-α-氨基酸
C.
L-β-氨基酸
D.
D-β-氨基酸
E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.
⼆级及⼆级以上结构统称为空间结构

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.
α－螺旋是右⼿螺旋，β－⽚层是左⼿螺旋
D.

E.

A.
⼀级结构与功能密切相关
B.

C.

D.

E.

A.

B.

C.

D.

E.
⾕氨酸的－COON基

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.
⽠氨酸
D.

E.

A.

B.

C.

D.

E.
1mol/L HCl

A.

B.

C.

D.
⾕氨酸
E.

⼤多数蛋⽩质的含氮量平均为（ ）。
A.
10%
B.
12%
C.
16%
D.
18%
E.
20%

A.
⾕氨酸
B.
⽢氨酸
C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.
⽢－缬－⾕－天－苯丙
B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

RNA和DNA彻底⽔解后的产物（ ）。
A.

B.

C.

D.

E.

A.
2ʹ，3ʹ-磷酸⼆酯键
B.
3ʹ，5ʹ-磷酸⼆酯键
C.
2ʹ，5ʹ-磷酸⼆酯键
D.

E.

A.

B.
N-C糖苷键
C.

D.

E.

A.
260nm
B.
320nm
C.
220nm
D.
280nm
E.
190nm
Watsorl－Crick的DNA结构模型（ ）。
A.

B.

C.

D.

E.

A.

B.

C.

D.
mRNA因能携带遗传信息，所以可长期存在
E.
mRNA的前⾝是rRNA

A.

B.

C.

D.

E.

DNA携带⽣物遗传信息这⼀事实意味着什么？（ ）
A.

B.

C.

D.
DNA的碱基组成随机体年龄及营养状况⽽改变
E.
DNA以⼩环状结构存在

A.

B.

C.
DNA的两条多核苷酸链⽅向相反
D.
DNA双螺旋中，氢键连接的碱基对形成⼀种近似平⾯的结构
E.

A.
AACCGACGUACACGACUGAA
B.
AACCGUCCAGCACUGGACGC
C.
GUCCAGUCCAGUCCAGUCCA
D.
UGGACUGGACUGGACUGGAC
E.
AACCGUCCAAAACCGUCAAC

A.

B.

C.
DNA被加热70～85℃时的粘度
D.
DNA变性时所含的G、C的浓度
E.
DNA完全变性时的温度

A.
A+T=15%
B.
G+C=25%
C.
G+C=40%
D.
A+T=80%
E.
G+C=35%

A.

B.

C.

D.

E.

A.
408nm
B.
204nm
C.
20.4nm
D.
4nm
E.
2nm

A.
360个
B.
240个
C.
120个
D.
50个
E.
30个

A.
3ʹ-dpACGGTACp-5ʹ
B.
3ʹ-dpGTACCGTp-5ʹ
C.
3ʹ-dpGGCCAUGp-5ʹ
D.
3ʹ-dpCATGGCAp-5ʹ
E.
3ʹ-dpCGACCGTp-5ʹ
⼀种tRNA其反密码⼦为5ʹ-TGC-3ʹ，它可识别的密码⼦为（ ）。
A.
5ʹ-GCA-3ʹ
B.
5ʹ-GGG-3ʹ
C.
5ʹ-CCG-3ʹ
D.
5ʹ-ACG-3ʹ
E.
5ʹ-CCC-3ʹ

A.
18SrRNA
B.
28SrRNA
C.
30SrRNA
D.
5.8SrRNA
E.
5SrRNA
tRNA分⼦3ʹ末端的碱基顺序是（ ）。
A.
CCA-3ʹ-OH
B.
AAA-3ʹ-OH
C.
CCC-3ʹ-OH
D.
AAC-3ʹ-OH
E.
ACA-3ʹ-OH
⾃然界游离核苷酸中，磷酸最常见是位于（ ）。
A.

B.

C.

D.

E.

⼤部分真核细胞mRNA3ʹ-末端都具有（ ）。
A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.
Vmax和Km值均降低
E.
Vmax和Km值均升⾼

A.

B.
⾕氨酸
C.

D.

E.

A.

B.

C.

D.
⽐活⼒最⾼
E.
Km最低

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.
⼀般来说，测定产物的⽣成量⽐测定底物的减少量更为准确
C.

D.

E.

A.
Km是酶的特性常数，与温度和pH⽆关
B.
V=1/2Vmax时，Km=[S]
C.

D.

E.
Km的单位为mol/L或mmol/L

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

A.
⼀种别构剂作用于酶的别构部位，同时也作用于催化部位
B.

C.

D.

E.

A.
1：5
B.
2：5
C.
3：5
D.
4：5
E.
1：1

A.

B.

C.

D.

E.

【单选题】$\lim_{x\to 0} \, \frac{2 x+3}{x+1}$
A.
2
B.
3
C.
$\frac{1}{2}$
D.
$\frac{1}{3}$
【单选题】$\lim_{n \to \infty } (\frac{2}{3})^n$
A.
1
B.
0
C.
$\infty$
D.

【单选题】双层伸展策略优于逐层伸展策略的关键在于（）
A.
zig-zig/zag-zag
B.
zig-zag/zag-zig
C.
zig-zig/zig-zag
D.

【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
【单选题】“Nevertheless” is a useful word, which means _______.
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
【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.

C.

D.

【单选题】I could hear the ______ of Mozart in the background.
A.
delight
B.
strains
C.
amusement
D.
pleasure
【单选题】、A, B, C三个元件并联；
A.
0.012
B.
0.328
C.
0.448
D.
0.552
【单选题】The children’s excitement is _____ as Christmas gets nearer.
A.
mounting
B.
escalating
C.
amounting
D.
descending
【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】A, B独立
A.
0.5
B.
0.6667
C.
0.8333
D.
0.9
【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.
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】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】$\lim_{n\to \infty } \, \frac{\ln (n)}{\ln (3 n)}$
A.
$\frac{1}{3}$
B.
$3$
C.
$1$
D.

【多选题】运动休闲可以（ ）。
A.

B.

C.

D.

E.

【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】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】During the conversation between Billy, Yuege and Yunpeng, we took a brief look at ______ .
A.
brain development
B.
C.
human evolution
D.
human degeneration
【单选题】What's the return value for a failed search in a B-tree of order 4?B树查找算法若最终失败，返回值为：
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
【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】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.