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notrichardren

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english_chinese_mmlu

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求环 2Z 的特征。

Find the characteristic of the ring 2Z.

0

3

12

30

0

3

12

30

abstract_algebra/dev/4

求所有 Z_3 中的 c，使得 Z_3[x]/(x^2 + c) 是一个域。

Find all c in Z_3 such that Z_3[x]/(x^2 + c) is a field.

0

1

2

3

0

1

2

3

abstract_algebra/dev/0

语句1 | 群中的每个元素都生成群的循环子群。语句2 | 对称群S_10有10个元素。

Statement 1 | Every element of a group generates a cyclic subgroup of the group. Statement 2 | The symmetric group S_10 has 10 elements.

正确，正确

错误，错误

正确，错误

错误，正确

True, True

False, False

True, False

False, True

abstract_algebra/dev/2

命题 1 | 有限集合到自身的每个函数必须是一对一的。命题 2 | 阿贝尔群的每个子群都是阿贝尔群。

Statement 1| Every function from a finite set onto itself must be one to one. Statement 2 | Every subgroup of an abelian group is abelian.

真，真

假，假

真，假

假，真

True, True

False, False

True, False

False, True

abstract_algebra/dev/3

语句1 | 如果aH是因子群的元素，则|aH|可以被|a|整除。语句2 | 如果H和K是G的子群，则HK是G的子群。

Statement 1 | If aH is an element of a factor group, then |aH| divides |a|. Statement 2 | If H and K are subgroups of G then HK is a subgroup of G.

真，真

假，假

真，假

假，真

True, True

False, False

True, False

False, True

abstract_algebra/dev/1

这些三叉神经分支中哪些包含运动神经过程？

Which of these branches of the trigeminal nerve contain somatic motor processes?

眶上神经

眶下神经

下颌神经

以上都不是

The supraorbital nerve

The infraorbital nerve

The mental nerve

None of the above

anatomy/dev/1

在AngleII类第2种咬合方式中，存在以下情况

In Angle's Class II Div 2 occlusion there is

上侧切牙的反合过度。

上中切牙的负性前伸。

上侧切牙的过度前伸。

上中切牙的过度前伸。

excess overbite of the upper lateral incisors.

negative overjet of the upper central incisors.

excess overjet of the upper lateral incisors.

excess overjet of the upper central incisors.

anatomy/dev/3

胸膜

The pleura

没有感觉神经。

间隔为 2 毫米。

延伸至颈部。

由呼吸道上皮组成。

have no sensory innervation.

are separated by a 2 mm space.

extend into the neck.

are composed of respiratory epithelium.

anatomy/dev/2

以下哪一个是包含垂体的腔体？

Which of the following is the body cavity that contains the pituitary gland?

腹部

颅腔

胸腔

脊椎

Abdominal

Cranial

Pleural

Spinal

anatomy/dev/4

颞骨的胚胎学起源是什么？

What is the embryological origin of the hyoid bone?

第一鳃弓

第一和第二鳃弓

第二鳃弓

第二和第三鳃弓

The first pharyngeal arch

The first and second pharyngeal arches

The second pharyngeal arch

The second and third pharyngeal arches

anatomy/dev/0

短周期彗星大多来自哪里，我们是如何知道的？

Where do most short-period comets come from and how do we know?

柯伊伯带；短周期彗星倾向于在与柯伊伯带一样的太阳系平面内。

柯伊伯带；短周期彗星倾向于从随机方向来临，表明彗星的分布呈球形，称为柯伊伯带。

小行星带；短周期彗星的轨道周期类似于像维斯塔这样的小行星，就像小行星带一样在太阳系平面内发现。

奥尔特云；短周期彗星倾向于在与奥尔特云一样的太阳系平面内。

The Kuiper belt; short period comets tend to be in the plane of the solar system just like the Kuiper belt.

The Kuiper belt; short period comets tend to come from random directions indicating a spherical distribution of comets called the Kuiper belt.

The asteroid belt; short period comets have orbital periods similar to asteroids like Vesta and are found in the plane of the solar system just like the asteroid belt.

The Oort cloud; short period comets tend to be in the plane of the solar system just like the Oort cloud.

astronomy/dev/1

为什么在小行星带的地方没有行星存在？

Why isn't there a planet where the asteroid belt is located?

在这里曾经形成一颗行星，但是因为一次灾难性的碰撞而被击碎了。

在太阳云雾这一部分没有足够的物质来形成一颗行星。

这里有太多的岩石物质来形成一个类地行星，但是没有足够的气态物质来形成一个类木行星。

与木星引力共振阻碍物质聚集形成行星。

A planet once formed here but it was broken apart by a catastrophic collision.

There was not enough material in this part of the solar nebula to form a planet.

There was too much rocky material to form a terrestrial planet but not enough gaseous material to form a jovian planet.

Resonance with Jupiter prevented material from collecting together to form a planet.

astronomy/dev/3

火星为什么是红色的？

Why is Mars red?

因为其表面被严重氧化（"生锈"）的矿物质所覆盖。

因为大气散射更多蓝光波长，从而传输的主要是红光。

因为火星被古老的熔岩流覆盖，而熔岩是红色的。

因为几十亿年前流动的水改变了火星表面的矿物质。

Because the surface is covered with heavily oxidized ("rusted") minerals.

Because the atmosphere scatters more light at bluer wavelengths transmitting mostly red light.

Because Mars is covered with ancient lava flows which are red in color.

Because flowing water on Mars's surface altered the surface minerals several billion years ago.

astronomy/dev/4

假设你的瞳孔直径为5毫米，而你有一台口径为50厘米的望远镜。这台望远镜可以接收多少倍于你的眼睛的光线？

Say the pupil of your eye has a diameter of 5 mm and you have a telescope with an aperture of 50 cm. How much more light can the telescope gather than your eye?

多10000倍

多100倍

多1000倍

多10倍

10000 times more

100 times more

1000 times more

10 times more

astronomy/dev/2

你正在沿着一条路推一辆卡车。在火星上加速这辆卡车会更容易吗？为什么？（假设没有摩擦力）

You are pushing a truck along a road. Would it be easier to accelerate this truck on Mars? Why? (Assume there is no friction)

由于火星上的卡车更重，因此会更困难。

在火星上由于卡车更轻，所以会更容易。

由于火星上的卡车更轻，因此会更困难。

无论在哪里，都是相同的。

It would be harder since the truck is heavier on Mars.

It would be easier since the truck is lighter on Mars.

It would be harder since the truck is lighter on Mars.

It would be the same no matter where you are.

astronomy/dev/0

与抵制不同，支持运动旨在奖励公司的良好行为。通过使用___________，这些运动的成功得以提高，使得运动能够促进公司实现__________。

In contrast to _______, _______ aim to reward favourable behaviour by companies. The success of such campaigns have been heightened through the use of ___________, which allow campaigns to facilitate the company in achieving _________ .

购买支持运动，抵制运动，区块链技术，慈善捐赠

购买支持运动，抵制运动，数字技术，增加销售额

抵制运动，全面支持运动，区块链技术，慈善捐赠

抵制运动，购买支持运动，数字技术，增加销售额

Buycotts, Boycotts, Blockchain technology, Charitable donations

Buycotts, Boycotts, Digital technology, Increased Sales

Boycotts, Buyalls, Blockchain technology, Charitable donations

Boycotts, Buycotts, Digital technology, Increased Sales

business_ethics/dev/4

CSO组织可以采取的三种对策是________，它通常涉及研究和沟通，________，可能涉及攻击公司的运营，或者________，通常涉及某种形式的________。

Three contrasting tactics that CSO's can engage in to meet their aims are ________ which typically involves research and communication, ________, which may involve physically attacking a company's operations or ________, often involving some form of _______.

非暴力直接行动，暴力直接行动，间接行动，抵制

间接行动，工具性行动，非暴力直接行动，信息运动

间接行动，暴力直接行动，非暴力直接行动，抵制

非暴力直接行动，工具性行动，间接行动，信息运动

Non-violent direct action, Violent direct action, Indirect action, Boycott

Indirect action, Instrumental action, Non-violent direct action, Information campaign

Indirect action, Violent direct action, Non-violent direct-action Boycott

Non-violent direct action, Instrumental action, Indirect action, Information campaign

business_ethics/dev/3

为确保非执行董事会成员的独立性，可以采取一些步骤，其中包括从公司_______外招募非执行董事，指定一段_______时间来任职，以及独立地被任命。

To ensure the independence of the non-executive board members, they are a number of steps which can be taken, which include non-executives being drawn from _______ the company, being appointed for a _________ time period as well as being appointed _________.

公司外部，有限的，独立地

公司内部，有限的，间歇性地

公司外部，无限制的，间歇性地

公司内部，无限制的，独立地

Outside, Limited, Independently

Inside, Limited, Intermittently

Outside, Unlimited, Intermittently

Inside, Unlimited, Independently

business_ethics/dev/2

除了参与企业社会责任的商业案例之外，还有许多与负面____有关的道德争论，______的公司拥有的权力以及商业与社会的______。

Beyond the business case for engaging in CSR there are a number of moral arguments relating to: negative _______, the _______that corporations possess and the ________ of business and society.

外部性，权力，独立性

宣传，虚无的资源，相互依存

宣传，权力，独立性

外部性，权力，相互依存

Externalities, Power, Independence

Publicity, Insubstantial resources, Mutual dependence

Publicity, Power, Independence

Externalities, Power, Mutual dependence

business_ethics/dev/0

_______ 是通过特定的政策、实践和计划，直接试图正式或非正式地管理道德问题或问题的行为。

_______ is the direct attempt to formally or informally manage ethical issues or problems, through specific policies, practices and programmes.

企业社会责任

商业道德管理

可持续性

环境管理

Corporate social responsibility

Business ethics management

Sustainability

Environmental management

business_ethics/dev/1

所有形式的肌肉收缩所需的能量来源是：

The energy for all forms of muscle contraction is provided by:

ATP.

ADP.

磷酸肌酸。

氧化磷酸化。

ATP.

ADP.

phosphocreatine.

oxidative phosphorylation.

clinical_knowledge/dev/0

在手部功能评估中，以下哪个陈述是正确的？

In the assessment of the hand function which of the following is true?

拇指外展由脊神经根T2供应

拇指对立肌的对立由脊神经根T1供应

手指内收由正中神经供应

手指外展由掌侧骨间肌介导

Abduction of the thumb is supplied by spinal root T2

Opposition of the thumb by opponens policis is supplied by spinal root T1

Finger adduction is supplied by the median nerve

Finger abduction is mediated by the palmar interossei

clinical_knowledge/dev/2

糖酵解是指将以下物质转化为：

Glycolysis is the name given to the pathway involving the conversion of:

将糖原转化为葡萄糖-1-磷酸。

将糖原或葡萄糖转化为果糖。

将糖原或葡萄糖转化为丙酮酸或乳酸。

将糖原或葡萄糖转化为丙酮酸或乙酰辅酶A。

glycogen to glucose-1-phosphate.

glycogen or glucose to fructose.

glycogen or glucose to pyruvate or lactate.

glycogen or glucose to pyruvate or acetyl CoA.

clinical_knowledge/dev/4

男性导尿管和女性导尿管有什么区别？

What is the difference between a male and a female catheter?

男性导尿管和女性导尿管的颜色不同。

男性导尿管比女性导尿管长。

男性导尿管比女性导尿管粗。

女性导尿管比男性导尿管长。

Male and female catheters are different colours.

Male catheters are longer than female catheters.

Male catheters are bigger than female catheters.

Female catheters are longer than male catheters.

clinical_knowledge/dev/1

2020年医学知识指出，在将工作交给资深同事之前，您应尝试多少次穿刺患者？

How many attempts should you make to cannulate a patient before passing the job on to a senior colleague, according to the medical knowledge of 2020?

4

3

2

1

4

3

2

1

clinical_knowledge/dev/3

在给定的人群中，每400人中就有一个人患有由完全隐性等位基因b引起的癌症。假设这个人群处于哈代-温伯格平衡状态，以下哪个是传播b等位基因但不预期患癌症的人群期望比例？

In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?

1/400

19/400

20/400

38/400

1/400

19/400

20/400

38/400

college_biology/dev/1

两个不同生物体内存在同源结构，例如人类和鸟类的前肢肱骨，表明

The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that

人类和鸟类是多系群物种

人类和鸟类的进化是相似的

人类和鸟类属于同一演化支

人类和鸟类是相似发展的

the human and bird are polyphyletic species

a human's and bird's evolution is convergent

the human and bird belong to a clade

the human and bird developed by analogy

college_biology/dev/2

下列哪些选项包含有必要在有丝分裂和减数分裂中进行染色体分离所需的DNA序列？

Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?

端粒

着丝粒

核小体

剪接体

Telomeres

Centromeres

Nucleosomes

Spliceosomes

college_biology/dev/4

根据韧皮部内物质压力流模型，从来源组织到汇流组织的光合产物移动是由什么驱动的？

According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by

依靠一个ATP依赖性压力流泵

依靠水势梯度压力

蒸腾作用

细胞壁外弥散

an ATP-dependent pressure-flow pump

a water-pressure potential gradient

transpiration

apoplastic diffusion

college_biology/dev/3

关于节肢动物，以下哪个陈述是准确的？

Which of the following represents an accurate statement concerning arthropods?

它们拥有由主要由肽聚糖组成的外骨骼。

它们拥有背部心脏的开放循环系统。

它们属于一个生物学上不成功的门，无法利用不同的栖息地和营养来源。

它们缺乏成对的、有关节的附肢。

They possess an exoskeleton composed primarily of peptidoglycan.

They possess an open circulatory system with a dorsal heart.

They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.

They lack paired, jointed appendages.

college_biology/dev/0

以下哪个关于镧系元素的说法是不正确的？

Which of the following statements about the lanthanide elements is NOT true?

镧系元素最常见的氧化态为+3。

镧系元素的配合物往往具有较高的配位数（> 6）。

所有镧系元素都会与水溶液中的酸反应，释放出氢气。

从镧到镥，镧系元素的原子半径沿周期表递增。

The most common oxidation state for the lanthanide elements is +3.

Lanthanide complexes often have high coordination numbers (> 6).

All of the lanthanide elements react with aqueous acid to liberate hydrogen.

The atomic radii of the lanthanide elements increase across the period from La to Lu.

college_chemistry/dev/0

3 Cl−(aq) + 4 CrO_4^2−(aq) + 23 H+(aq) → 3 HClO2(aq) + 4 Cr3+(aq) + 10 H2O(l)。在上述反应中，Cl−(aq)的行为是

3 Cl−(aq) + 4 CrO_4^2−(aq) + 23 H+(aq) → 3 HClO2(aq) + 4 Cr3+(aq) + 10 H2O(l). In the reaction shown above, Cl−(aq) behaves as

一个酸

一个碱

一个催化剂

一个还原剂

an acid

a base

a catalyst

a reducing agent

college_chemistry/dev/3

预测13C标记甲基自由基（13CH3·）溶液EPR谱中的线数，假设这些线不重叠。

Predict the number of lines in the EPR spectrum of a solution of 13C-labelled methyl radical (13CH3•), assuming the lines do not overlap.

4

3

6

24

4

3

6

24

college_chemistry/dev/2

以下哪个最佳按热稳定性从低到高列出了第14族元素的氢化物？

Which of the following lists the hydrides of group-14 elements in order of thermal stability, from lowest to highest?

PbH4 < SnH4 < GeH4 < SiH4 < CH4

PbH4 < SnH4 < CH4 < GeH4 < SiH4

CH4 < SiH4 < GeH4 < SnH4 < PbH4

CH4 < PbH4 < GeH4 < SnH4 < SiH4

PbH4 < SnH4 < GeH4 < SiH4 < CH4

PbH4 < SnH4 < CH4 < GeH4 < SiH4

CH4 < SiH4 < GeH4 < SnH4 < PbH4

CH4 < PbH4 < GeH4 < SnH4 < SiH4

college_chemistry/dev/4

一份0.217g的HgO样品（摩尔质量=217g）根据上述反应与过量的碘化物离子反应。测定得到的溶液需要多少毫升0.10 M HCl到达当量点？

A 0.217 g sample of HgO (molar mass = 217 g) reacts with excess iodide ions according to the reaction shown above. Titration of the resulting solution requires how many mL of 0.10 M HCl to reach equivalence point?

1.0毫升

10毫升

20毫升

50毫升

1.0 mL

10 mL

20 mL

50 mL

college_chemistry/dev/1

编译器生成以下赋值语句的代码。 G := (A + B) * C - (D + E) * F 目标机器有一个累加器和单地址指令集，包括载入（load）、存储（store）、加法（add）、减法（subtract）和乘法（multiply）指令。对于算术运算，左操作数取自累加器，结果出现在累加器中。所得代码的最小指令数量为：

A compiler generates code for the following assignment statement. G := (A + B) * C - (D + E) * F The target machine has a single accumulator and a single-address instruction set consisting of instructions load, store, add, subtract, and multiply. For the arithmetic operations, the left operand is taken from the accumulator and the result appears in the accumulator. The smallest possible number of instructions in the resulting code is

5

6

7

9

5

6

7

9

college_computer_science/dev/3

下列哪个正则表达式与 (a* + b)*(c + d) 等效（描述了相同的字符串集）？

Which of the following regular expressions is equivalent to (describes the same set of strings as) (a* + b)*(c + d)?

a*(c + d)+ b(c + d)

a*(c + d)* + b(c + d)*

a*(c + d)+ b*(c + d)

(a + b)*c +(a + b)*d

a*(c + d)+ b(c + d)

a*(c + d)* + b(c + d)*

a*(c + d)+ b*(c + d)

(a + b)*c +(a + b)*d

college_computer_science/dev/0

考虑一种计算机设计，其中多个处理器，每个处理器都有一个私有的缓存内存，并使用单个总线共享全局内存。这个总线是关键的系统资源。只要内存引用是满足其本地缓存的，每个处理器可以每500纳秒执行一条指令。当缓存未命中时，处理器会延迟2,000纳秒。在这个额外的延迟的一半时间里，总线专门用于处理缓存未命中。在另一半时间里，处理器不能继续执行，但总线可以自由地为其他处理器提供服务请求。平均每条指令需要2次内存引用。平均情况下，缓存未命中的占引用的1%。如果忽略来自其他处理器竞争的延迟，那么单个处理器会占用总线容量的比例是多少？

Consider a computer design in which multiple processors, each with a private cache memory, share global memory using a single bus. This bus is the critical system resource. Each processor can execute one instruction every 500 nanoseconds as long as memory references are satisfied by its local cache. When a cache miss occurs, the processor is delayed for an additional 2,000 nanoseconds. During half of this additional delay, the bus is dedicated to serving the cache miss. During the other half, the processor cannot continue, but the bus is free to service requests from other processors. On average, each instruction requires 2 memory references. On average, cache misses occur on 1 percent of references. What proportion of the capacity of the bus would a single processor consume, ignoring delays due to competition from other processors?

1/50

1/27

1/25

2/27

1/50

1/27

1/25

2/27

college_computer_science/dev/4

某个流水线RISC机器有8个通用寄存器R0、R1、…… R7，并支持以下操作。 ADD Rs1，Rs2，Rd：将Rs1加上Rs2，并将和存储在Rd中 MUL Rs1，Rs2，Rd：将Rs1与Rs2相乘，并将积存储在Rd中 操作通常需要一个时钟周期；但是，如果一个操作产生一个立即后续操作所需的结果，则需要两个周期。考虑表达式AB + ABC + BC，其中变量A、B、C位于寄存器R0、R1、R2中。如果这三个寄存器的内容不能被修改，那么计算AB + ABC + BC所需的操作序列的最小时钟周期数是多少？

A certain pipelined RISC machine has 8 general-purpose registers R0, R1, . . . , R7 and supports the following operations. ADD Rs1, Rs2, Rd Add Rs1 to Rs2 and put the sum in Rd MUL Rs1, Rs2, Rd Multiply Rs1 by Rs2 and put the product in Rd An operation normally takes one cycle; however, an operation takes two cycles if it produces a result required by the immediately following operation in an operation sequence. Consider the expression AB + ABC + BC, where variables A, B, C are located in registers R0, R1, R2. If the contents of these three registers must not be modified, what is the minimum number of clock cycles required for an operation sequence that computes the value of AB + ABC + BC?

5

6

7

8

5

6

7

8

college_computer_science/dev/1

Singleton 设计模式用于确保只有一个类的实例可以被实例化。以下哪些是这种设计模式的真实描述？ I. Singleton 类具有静态工厂方法来提供其实例。 II. Singleton 类可以是另一个类的子类。 III. Singleton 类具有私有构造函数。

The Singleton design pattern is used to guarantee that only a single instance of a class may be instantiated. Which of the following is (are) true of this design pattern? I. The Singleton class has a static factory method to provide its instance. II. The Singleton class can be a subclass of another class. III. The Singleton class has a private constructor.

仅I

仅II

仅III

I、II 和 III

I only

II only

III only

I, II, and III

college_computer_science/dev/2

令A为所有符合7m + 12n = 22条件的整数有序对(m, n)的集合。集合B = {m + n : (m, n) \in A}，B中最大的负数是多少？

Let A be the set of all ordered pairs of integers (m, n) such that 7m + 12n = 22. What is the greatest negative number in the set B = {m + n : (m, n) \in A}?

-5

-4

-3

-2

-5

-4

-3

-2

college_mathematics/dev/4

设 V 是所有实多项式 p(x) 的集合。定义变换 T，S 在 V 上，使得 T：p(x) -> xp(x)，S：p(x) -> p'(x) = d/dx p(x)，并将 (ST)(p(x)) 解释为 S(T(p(x)))。以下哪个选项是正确的？

Let V be the set of all real polynomials p(x). Let transformations T, S be defined on V by T:p(x) -> xp(x) and S:p(x) -> p'(x) = d/dx p(x), and interpret (ST)(p(x)) as S(T(p(x))). Which of the following is true?

ST = 0

ST = T

ST = TS

ST - TS 是 V 到自身的恒等映射。

ST = 0

ST = T

ST = TS

ST - TS is the identity map of V onto itself.

college_mathematics/dev/0

假设f(1+x)=f(x)对于所有实数x成立。如果f是一个多项式且f(5)=11，则f(15/2)

Suppose that f(1 + x) = f(x) for all real x. If f is a polynomial and f(5) = 11, then f(15/2)

-11

0

11

33/2

-11

0

11

33/2

college_mathematics/dev/3

一个容器最初含有3克盐溶于100升水的盐水。一种盐水溶液每升水含盐0.02克被以每分钟4升的速率喷洒到容器内。喷洒的盐水溶液不断地与容器内的盐水混合，并以每分钟4升的速率从容器中流出。如果混合是瞬时进行的，那么100分钟后容器内有多少克盐？

A tank initially contains a salt solution of 3 grams of salt dissolved in 100 liters of water. A salt solution containing 0.02 grams of salt per liter of water is sprayed into the tank at a rate of 4 liters per minute. The sprayed solution is continually mixed with the salt solution in the tank, and the mixture flows out of the tank at a rate of 4 liters per minute. If the mixing is instantaneous, how many grams of salt are in the tank after 100 minutes have elapsed?

2

2 - e^-2

2 + e^-2

2 + e^-4

2

2 - e^-2

2 + e^-2

2 + e^-4

college_mathematics/dev/1

令 A 为实 2x2 矩阵。以下哪些陈述必须为真？ I. A^2 的所有条目均为非负数。 II. A^2 的行列式为非负数。 III. 如果 A 有两个不同的特征值，则 A^2 有两个不同的特征值。

Let A be a real 2x2 matrix. Which of the following statements must be true? I. All of the entries of A^2 are nonnegative. II. The determinant of A^2 is nonnegative. III. If A has two distinct eigenvalues, then A^2 has two distinct eigenvalues.

仅为 I

仅为 II

仅为 III

仅为 II 和 III

I only

II only

III only

II and III only

college_mathematics/dev/2

葡萄糖被运输到肌肉细胞中：

Glucose is transported into the muscle cell:

通过被称为GLUT4的蛋白质转运体。

只有在胰岛素存在时才能进行。

通过hexokinase进行。

通过单羧酸转运体进行。

via protein transporters called GLUT4.

only in the presence of insulin.

via hexokinase.

via monocarbylic acid transporters.

college_medicine/dev/0

一位高中科学教师用纯氮填充一个1升的瓶子并密封盖子。压力为1.70大气压，室温为25℃。只有在保持其他变量不变的情况下，哪两个变量都能增加系统的压力？

A high school science teacher fills a 1 liter bottle with pure nitrogen and seals the lid. The pressure is 1.70 atm, and the room temperature is 25°C. Which two variables will both increase the pressure of the system, if all other variables are held constant?

增加温度，增加气体摩尔数

增加温度，增加体积

减小体积，减小温度

减少气体摩尔数，增加体积

Increasing temperature, increasing moles of gas

Increasing temperature, increasing volume

Decreasing volume, decreasing temperature

Decreasing moles of gas, increasing volume

college_medicine/dev/3

肌酸补充的预期副作用是:

An expected side effect of creatine supplementation is:

肌肉无力。

体重增加。

肌肉痉挛。

电解质流失。

muscle weakness.

gain in body mass.

muscle cramps.

loss of electrolytes.

college_medicine/dev/4

对于新生儿的基因测试，发现有一种罕见的X连锁隐性遗传疾病。以下哪个陈述在该疾病的谱系图中可能是正确的？

In a genetic test of a newborn, a rare genetic disorder is found that has X-linked recessive transmission. Which of the following statements is likely true regarding the pedigree of this disorder?

母亲方的所有子女都会患上该疾病。

在该家族中，女性受影响的比例将是男性的两倍左右。

一个患病男性的所有女儿都将受到影响。

男性和女性患该疾病的比例将相等。

All descendants on the maternal side will have the disorder.

Females will be approximately twice as affected as males in this family.

All daughters of an affected male will be affected.

There will be equal distribution of males and females affected.

college_medicine/dev/2

一个长为2L，横截面积为A的镍铬线的一端连接在另一根长度为L，横截面积为2A的镍铬线的一端。如果较长那根线的自由端电势为8.0伏，较短那根线的自由端电势为1.0伏，那么两根导线交汇处的电势最接近

One end of a Nichrome wire of length 2L and cross-sectional area A is attached to an end of another Nichrome wire of length L and cross- sectional area 2A. If the free end of the longer wire is at an electric potential of 8.0 volts, and the free end of the shorter wire is at an electric potential of 1.0 volt, the potential at the junction of the two wires is most nearly equal to

2.4伏特

3.3伏特

4.5伏特

5.7伏特

2.4 V

3.3 V

4.5 V

5.7 V

college_physics/dev/2

折射望远镜由两个距离为100厘米的凸透镜组成。目镜透镜的焦距为20厘米。望远镜的角放大率为

A refracting telescope consists of two converging lenses separated by 100 cm. The eye-piece lens has a focal length of 20 cm. The angular magnification of the telescope is

4

5

6

20

4

5

6

20

college_physics/dev/0

以下哪种热力学过程中，理想气体内能的增加量等于向气体添加的热量？

For which of the following thermodynamic processes is the increase in the internal energy of an ideal gas equal to the heat added to the gas?

恒温

恒容

恒压

绝热

Constant temperature

Constant volume

Constant pressure

Adiabatic

college_physics/dev/1

μ子具有特征寿命约为10^-6秒的衰变，分解成一个电子，一个μ型中微子和一个反电子型中微子。根据守恒定律，μ子禁止衰变成一个电子和单一的中微子。

The muon decays with a characteristic lifetime of about 10^-6 second into an electron, a muon neutrino, and an electron antineutrino. The muon is forbidden from decaying into an electron and just a single neutrino by the law of conservation of

电荷

质量

能量和动量

轻子数

charge

mass

energy and momentum

lepton number

college_physics/dev/4

折射望远镜由两个聚焦透镜组成，间距为100厘米。目镜透镜焦距为20厘米。望远镜的角倍率是

A refracting telescope consists of two converging lenses separated by 100 cm. The eye-piece lens has a focal length of 20 cm. The angular magnification of the telescope is

4

5

6

20

4

5

6

20

college_physics/dev/3

利用“心脏出血”缺陷

Exploitation of the Heartbleed bug permits

覆盖内存中的加密密钥

一种代码注入

越界读取缓冲区外的内容

格式化字符串攻击

overwriting cryptographic keys in memory

a kind of code injection

a read outside bounds of a buffer

a format string attack

computer_security/dev/3

恶意软件可以修改您计算机上的数据，导致您的计算机无法正常运行，您也可能无法访问特定的数据，甚至可能要求赎金才能恢复访问权限。

_____________ can modify data on your system – so that your system doesn’t run correctly or you can no longer access specific data, or it may even ask for ransom in order to give your access.

IM - 特洛伊木马

后门特洛伊木马

特洛伊木马下载器

勒索特洛伊木马

IM – Trojans

Backdoor Trojans

Trojan-Downloader

Ransom Trojan

computer_security/dev/1

SHA-1 的消息摘要为

SHA-1 has a message digest of

160 位

512 位

628 位

820 位

160 bits

512 bits

628 bits

820 bits

computer_security/dev/0

什么是道德黑客攻击？

What is ethical hacking?

通过“黑客攻击”伦理道德来证明自私行为（不是答案）

渗透测试期间入侵系统，以暴露漏洞，以便修复而非利用（答案）

入侵那些你不同意他们伦理道德的系统（不是答案）

快速软件开发的俚语，例如在黑客马拉松中（不是答案）

"Hacking" ethics so they justify unintended selfish behavior

Hacking systems (e.g., during penetration testing) to expose vulnerabilities so they can be fixed, rather than exploited

Hacking into systems run by those whose ethics you disagree with

A slang term for rapid software development, e.g., as part of hackathons

computer_security/dev/2

____________ 是任何搜索引擎无法搜索到的内容。

The ____________ is anything which your search engine cannot search.

被鬼怪附身的网页

全球网络

表层网址

深层网址

Haunted web

World Wide Web

Surface web

Deep Web

computer_security/dev/4

相较于发生裂变的铀原子的质量，裂变后的产物总质量

Compared with the mass of a uranium atom undergoing fission, the combined masses of the products after fission are

更小

更大

相同

为零

less

more

the same

zero

conceptual_physics/dev/0

一架模型飞机在逆风飞行时速度较慢，在顺风飞行时速度较快。当以与风相交直角的角度发射时，其地速相对于静止空气飞行时

A model airplane flies slower when flying into the wind and faster with wind at its back. When launched at right angles to the wind a cross wind its groundspeed compared with flying in still air is

相同

更快

更慢

根据风速而定，可能更快或更慢

the same

greater

less

either greater or less depending on wind speed

conceptual_physics/dev/3

这三种元素中哪一种元素的每个核子质量最高？

Which of these three elements has the most mass per nucleon?

氢

铁

铀

每个核子的质量相同

Hydrogen

Iron

Uranium

Same in each

conceptual_physics/dev/4

根据等效原理，以下物体是相等的

Things that are equivalent according to the equivalence principle are

空间和时间。

旅行中的孪生兄弟和呆在家的孪生兄弟。

重力和加速度。

质量和能量。

space and time.

a traveling twin and a stay-at-home twin.

gravity and acceleration.

mass and energy.

conceptual_physics/dev/1

肥皂泡中的颜色是由光线引起的。

Colors in a soap bubble result from light

转换成不同的频率

偏转

干涉

偏振

converted to a different frequency

deflection

interference

polarization

conceptual_physics/dev/2

考虑以下的AR(1)模型，其中干扰项具有零均值和单位方差 yt = 0.2 + 0.4 yt-1 + ut y（无条件）均值为

Consider the following AR(1) model with the disturbances having zero mean and unit variance yt = 0.2 + 0.4 yt-1 + ut The (unconditional) mean of y will be given by

0.2

0.4

0.5

0.33

0.2

0.4

0.5

0.33

econometrics/dev/1

假设一个检验统计量的 p 值为 0.08。以下哪个陈述是正确的？ (i) 如果检验大小正好为 8％，那么我们会在拒绝和不拒绝原假设之间保持中立 (ii) 如果使用10％的检验大小，则原假设将被拒绝 (iii) 如果使用1％的检验大小，则原假设将不被拒绝 (iv) 如果使用5％的检验大小，则原假设将被拒绝。

Suppose that a test statistic has associated with it a p-value of 0.08. Which one of the following statements is true? (i) If the size of the test were exactly 8%, we would be indifferent between rejecting and not rejecting the null hypothesis (ii) The null would be rejected if a 10% size of test were used (iii) The null would not be rejected if a 1% size of test were used (iv) The null would be rejected if a 5% size of test were used.

仅 (ii) 和 (iv)

仅 (i) 和 (iii)

仅 (i)，(ii) 和 (iii)

(i)，(ii)，(iii) 和 (iv)

(ii) and (iv) only

(i) and (iii) only

(i), (ii), and (iii) only

(i), (ii), (iii), and (iv)

econometrics/dev/2

假设现在有一位研究人员希望使用信息准则来确定VAR的最优滞后期。一组横跨500个观测值的双变量VAR的剩余方差协方差矩阵行列式的数值分别为0.0336、0.0169、0.0084和0.0062，分别对应1、2、3和4个滞后期。根据AIC，最优模型阶数是多少？

Suppose now that a researcher wishes to use information criteria to determine the optimal lag length for a VAR. 500 observations are available for the bi-variate VAR, and the values of the determinant of the variance-covariance matrix of residuals are 0.0336, 0.0169, 0.0084, and 0.0062 for 1, 2, 3, and 4 lags respectively. What is the optimal model order according to Akaike's information criterion?

1个滞后期

2个滞后期

3个滞后期

4个滞后期

1 lag

2 lags

3 lags

4 lags

econometrics/dev/4

如果在回归模型中存在异方差性但被忽略，那么OLS估计量将会出现什么后果？

What would be then consequences for the OLS estimator if heteroscedasticity is present in a regression model but ignored?

它将是有偏的

它将是不一致的

它将是低效的

(a)、(b)和(c)都会成立。

It will be biased

It will be inconsistent

It will be inefficient

All of (a), (b) and (c) will be true.

econometrics/dev/3

对于一个固定的自回归过程，冲击将会

For a stationary autoregressive process, shocks will

最终消失

无限持续

指数增长

永远不会发生

Eventually die away

Persist indefinitely

Grow exponentially

Never occur

econometrics/dev/0

两条长导线承载100 A电流。如果这些导线相距20毫米，每条导线每米长度的力将为

Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

100 牛。

0.1 牛。

1 牛。

0.01 牛。

100 N.

0.1 N.

1 N.

0.01 N.

electrical_engineering/dev/3

在由 NOR 门构建的 SR 触发器中，哪个条件不被允许

In an SR latch built from NOR gates, which condition is not allowed

S=0，R=0

S=0，R=1

S=1，R=0

S=1，R=1

S=0, R=0

S=0, R=1

S=1, R=0

S=1, R=1

electrical_engineering/dev/0

在一个2极扫极绕组的直流电机中，一个导体的电阻为2Ω，导体的总数为100。求总电阻。

In a 2 pole lap winding dc machine , the resistance of one conductor is 2Ω and total number of conductors is 100. Find the total resistance

200Ω

100Ω

50Ω

10Ω

200Ω

100Ω

50Ω

10Ω

electrical_engineering/dev/1

一点磁极的强度为4π* 10^-4韦伯。一个强度为4π* 1.5 * 10^-4韦伯的点磁极距离它10厘米时的牛顿力是

A point pole has a strength of 4π * 10^-4 weber. The force in newtons on a point pole of 4π * 1.5 * 10^-4 weber placed at a distance of 10 cm from it will be

15 N。

20 N。

7.5 N。

3.75 N。

15 N.

20 N.

7.5 N.

3.75 N.

electrical_engineering/dev/4

移动线圈仪表的线圈有100匝，长40毫米，宽30毫米。全量程的控制力矩是240*10-6牛-米。如果磁通密度是1 Wb/m2，仪表的量程是

The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240*10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is

1毫安。

2毫安。

3毫安。

4毫安。

1 mA.

2 mA.

3 mA.

4 mA.

electrical_engineering/dev/2

一家商店售卖107种不同颜色的油漆。他们在库存中每种颜色都有25桶油漆。以下算式可以计算该商店库存中的油漆桶数：107 × 25。商店库存中的油漆桶数是多少？

A store sells 107 different colors of paint. They have 25 cans of each color in storage. The number of cans of paint the store has in storage can be found using the expression below. 107 × 25. How many cans of paint does the store have in storage?

749

2,675

2,945

4,250

749

2,675

2,945

4,250

elementary_mathematics/dev/3

米歇尔出生的城市的人口为145,826。请问数字145,826中的数字5代表的是哪个数量级?

The population of the city where Michelle was born is 145,826. What is the value of the 5 in the number 145,826?

5 千位

5 百位

5 十位

5 个位

5 thousands

5 hundreds

5 tens

5 ones

elementary_mathematics/dev/0

Olivia使用规则“添加11”创建了如下所示的数字模式。10, 21, 32, 43, 54。关于此数字模式的哪种说明是正确的？

Olivia used the rule "Add 11" to create the number pattern shown below. 10, 21, 32, 43, 54 Which statement about the number pattern is true?

模式中的第10个数字将是偶数。

数字模式永远不会有两个相邻的偶数。

模式中接下来的两个数字将是一个偶数，然后是一个奇数。

如果数字模式以奇数开头，那么该模式将只包含奇数。

The 10th number in the pattern will be an even number.

The number pattern will never have two even numbers next to each other.

The next two numbers in the pattern will be an even number then an odd number.

If the number pattern started with an odd number then the pattern would have only odd numbers in it.

elementary_mathematics/dev/1

以下哪个式子等价于 5 x 9?

Which expression is equivalent to 5 x 9?

(5 x 4) x (6 x 5)

(5 x 5) + (5 x 4)

(5 x 5) + (5 x 9)

(5 x 9) x (6 x 9)

(5 x 4) x (6 x 5)

(5 x 5) + (5 x 4)

(5 x 5) + (5 x 9)

(5 x 9) x (6 x 9)

elementary_mathematics/dev/4

一共30名球员在公园里打篮球。每个队会有5名球员。以下哪个陈述正确解释了如何找到所需的队伍数量？

A total of 30 players will play basketball at a park. There will be exactly 5 players on each team. Which statement correctly explains how to find the number of teams needed?

将5加上30，找到35个队伍。

将30除以5，找到6个队伍。

将30和5相乘，找到150个队伍。

用30减去5，找到25个队伍。

Add 5 to 30 to find 35 teams.

Divide 30 by 5 to find 6 teams.

Multiply 30 and 5 to find 150 teams.

Subtract 5 from 30 to find 25 teams.

elementary_mathematics/dev/2

选择最佳的命题逻辑翻译。George 借了 Hector 的割草机。(g: George; h: Hector; l: Hector的割草机; Bxyx: x从z借用了y)

Select the best translation into predicate logic.George borrows Hector's lawnmower. (g: George; h: Hector; l: Hector's lawnmower; Bxyx: x borrows y from z)

Blgh

Bhlg

Bglh

Bghl

Blgh

Bhlg

Bglh

Bghl

formal_logic/dev/1

选出最佳的一项对这个命题进行谓词逻辑翻译：没有人在火星开车。

Select the best translation into predicate logic: No people drive on Mars.

~Pd

(∀x)(Px ∨ ~Dx)

(∀x)(Px ⊃ ~Dx)

~Dp

~Pd

(∀x)(Px ∨ ~Dx)

(∀x)(Px ⊃ ~Dx)

~Dp

formal_logic/dev/0

选择谓词逻辑中给出的命题的最佳英文解释。 Dm （∀x）（Wx ⊃ ~Dx） （∀x）Wx ∨ Ag /（∃x）Ax

Select the best English interpretation of the given arguments in predicate logic. Dm (∀x)(Wx ⊃ ~Dx) (∀x)Wx ∨ Ag / (∃x)Ax

玛丽娜是一名舞者。一些软弱无力者不是舞者。要么一切都是软弱无力者，要么乔治亚打排球。因此，某物打排球。

玛丽娜是一名舞者。没有软弱无力者是舞者。一切都是软弱无力者或打排球。因此，某物打排球。

玛丽娜是一名舞者。一些软弱无力者不是舞者。一切都是软弱无力者或打排球。因此，某物打排球。

玛丽娜是一名舞者。没有软弱无力者是舞者。要么一切都是软弱无力者，要么乔治亚打排球。因此，某物打排球。

Marina is a dancer. Some weaklings are not dancers. Either everything is a weakling or Georgia plays volleyball. So something plays volleyball.

Marina is a dancer. No weakling is a dancer. Everything is either a weakling or plays volleyball. So something plays volleyball.

Marina is a dancer. Some weaklings are not dancers. Everything is either a weakling or plays volleyball. So something plays volleyball.

Marina is a dancer. No weakling is a dancer. Either everything is a weakling or Georgia plays volleyball. So something plays volleyball.

formal_logic/dev/2

为下列二元命题构造一个完整的真值表。然后，使用真值表确定这些陈述是否逻辑上等价或矛盾。如果两者都不是，确定它们是否一致或不一致。证明您的答案。 E ⊃ (F · E) 和 ~E · F

Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers. E ⊃ (F · E) and ~E · F

逻辑等价

矛盾

既非逻辑等价也非矛盾，但一致

不一致

Logically equivalent

Contradictory

Neither logically equivalent nor contradictory, but consistent

Inconsistent

formal_logic/dev/3

截至2015年，自1990年以来，欧洲的森林____，非洲和美洲的森林____。

As of 2015, since 1990 forests have ____ in Europe and have ____ in Africa and the Americas.

增加，增加

增加，减少

减少，增加

减少，减少

increased, increased

increased, decreased

decreased, increased

decreased, decreased

global_facts/dev/2

截至2019年，大约有多少美国人同意州政府是为全体人民谋福利运作的？

As of 2019, about what percentage of Americans agree that the state is run for the benefit of all the people?

31%

46%

61%

76%

31%

46%

61%

76%

global_facts/dev/1

截至2017年，今天世界上有多少1岁儿童接种了某种疾病的疫苗？ *

As of 2017, how many of the world’s 1-year-old children today have been vaccinated against some disease? *

80%

60%

40%

20%

80%

60%

40%

20%

global_facts/dev/4

以下哪组陈述都是正确的（截至2019年）？

Which of the following pairs of statements are both true (as of 2019)?

人们倾向于对自己的未来和自己的国家或世界的未来持乐观态度。

人们倾向于对自己的未来持乐观态度，但对自己的国家或世界的未来持悲观态度。

人们倾向于对自己的未来持悲观态度，但对自己的国家或世界的未来持乐观态度。

人们倾向于对自己的未来和自己的国家或世界的未来都持悲观态度。

People tend to be optimistic about their own future and the future of their nation or the world.

People tend to be optimistic about their own future but pessimistic about the future of their nation or the world.

People tend to be pessimistic about their own future but optimistic about the future of their nation or the world.

People tend to be pessimistic about their own future and the future of their nation or the world.

global_facts/dev/0

截至2019年，大约有多少俄罗斯人认为在我们国家拥有没有政府/国家审查的自由媒体非常重要?

As of 2019, about what percentage of Russians say it is very important to have free media in our country without government/state censorship?

38%

53%

68%

83%

38%

53%

68%

83%

global_facts/dev/3

以下哪个不是形成重组 DNA 的方法？

Which of the following is not a way to form recombinant DNA?

翻译

接合

专门转导

转化

Translation

Conjugation

Specialized transduction

Transformation

high_school_biology/dev/0

细菌酶中的一种突变导致先前极性氨基酸变成了非极性氨基酸，这种氨基酸位于远离酶活性位点的位置。这种突变可能会如何改变酶的底物特异性？

A mutation in a bacterial enzyme changed a previously polar amino acid into a nonpolar amino acid. This amino acid was located at a site distant from the enzyme’s active site. How might this mutation alter the enzyme’s substrate specificity?

改变酶的pH最适值

改变酶在细胞中的位置

改变蛋白质的形状

远离活性位点的氨基酸变化无法改变酶的底物特异性。

By changing the enzyme’s pH optimum

By changing the enzyme’s location in the cell

By changing the shape of the protein

An amino acid change away from the active site cannot alter the enzyme’s substrate specificity.

high_school_biology/dev/1

在动物细胞中，以下哪种代表了细胞合成分泌蛋白的最可能途径？

In animal cells, which of the following represents the most likely pathway that a secretory protein takes as it is synthesized in a cell?

质膜-高尔基体-核糖体-分泌小泡-粗面内质网

核糖体-高尔基体-粗面内质网-分泌小泡-质膜

质膜-高尔基体-核糖体-分泌小泡-粗面内质网

核糖体-粗面内质网-高尔基体-分泌小泡-质膜

Plasma membrane–Golgi apparatus–ribosome–secretory vesicle–rough ER

Ribosome–Golgi apparatus–rough ER–secretory vesicle–plasma membrane

Plasma membrane–Golgi apparatus–ribosome–secretory vesicle–rough ER

Ribosome–rough ER–Golgi apparatus–secretory vesicle–plasma membrane

high_school_biology/dev/2

同源结构通常被认为是自然选择过程的证据。 以下所有都是同源结构的例子，除了

Homologous structures are often cited as evidence for the process of natural selection. All of the following are examples of homologous structures EXCEPT

鸟的翅膀和蝙蝠的翅膀

鲸鱼的鳍和人的手臂

海豚的胸鳍和海豹的鳍

昆虫的前腿和狗的前肢

the wings of a bird and the wings of a bat

the flippers of a whale and the arms of a man

the pectoral fins of a porpoise and the flippers of a seal

the forelegs of an insect and the forelimbs of a dog

high_school_biology/dev/4

以下哪个在细胞分裂控制中未知？

Which of the following is not known to be involved in the control of cell division?

细胞周期蛋白

蛋白激酶

检查点

成纤维细胞

Cyclins

Protein kinases

Checkpoints

Fibroblast cells

high_school_biology/dev/3

一个溶液包含2.00摩尔的乙酸，CH3COOH，和1.00摩尔的醋酸钙，Ca（CH3COO）2。该溶液能够抵抗少量强酸或强碱的加入，只有一些小的pH变化。大量的强酸或强碱会引起显著的pH变化。在pH开始发生重大变化之前，最多可以加入多少摩尔的硝酸，HNO3？

A solution contains 2.00 mole of acetic acid, CH3COOH, and 1.00 mole of calcium acetate, Ca(CH3COO)2. The solution is able to resist the addition of a small amount of strong acid or strong base with only minor changes in the pH of the solution. Larger quantities of strong acid or strong base can cause a significant change in pH. How many moles of nitric acid, HNO3, may be added before the pH begins to change significantly?

0.500摩尔

1.00摩尔

2.00摩尔

3.00摩尔

0.500 mole

1.00 mole

2.00 mole

3.00 mole

high_school_chemistry/dev/4

根据溶解度规则，以下哪个是正确的？

From the solubility rules, which of the following is true?

所有氯化物、溴化物和碘化物都是可溶的

所有硫酸盐都是可溶的

所有氢氧化物都是可溶的

所有含铵的化合物都是可溶的

All chlorides, bromides, and iodides are soluble

All sulfates are soluble

All hydroxides are soluble

All ammonium-containing compounds are soluble

high_school_chemistry/dev/2

以下哪个化学物质被认为是酸酐？

Which of the following is considered an acid anhydride?

HCl

H2SO3

SO2

Al(NO3)3

HCl

H2SO3

SO2

Al(NO3)3

high_school_chemistry/dev/0

合成出一种新化合物，发现它是一种摩尔质量为248克/摩尔的一元酸。当将0.0050摩尔该酸溶解在0.500升水中时，测得其pH值为3.89。这种酸的pKa是多少？

A new compound is synthesized and found to be a monoprotic acid with a molar mass of 248 g/mol. When 0.0050 mol of this acid are dissolved in 0.500 L of water, the pH is measured as 3.89. What is the pKa of this acid?

3.89

7.78

5.78

2.33

3.89

7.78

5.78

2.33

high_school_chemistry/dev/3

以下哪个分子是极性分子？

Which of the following is expected to be a polar molecule?

PCl4F

BF3

CO2

Si(CH3)4

PCl4F

BF3

CO2

Si(CH3)4

high_school_chemistry/dev/1

许多网络浏览器允许用户打开匿名窗口。在匿名窗口中浏览时，浏览器不记录浏览历史或下载文件列表。退出匿名窗口时，会删除会话期间创建的 cookie。关于在匿名窗口中浏览的哪些说法是正确的？

Many Web browsers allow users to open anonymous windows. During a browsing session in an anonymous window, the browser does not record a browsing history or a list of downloaded files. When the anonymous window is exited, cookies created during the session are deleted. Which of the following statements about browsing sessions in an anonymous window is true?

在匿名窗口中浏览的用户活动将不会被那些监控用户网络的人（例如系统管理员）看到。

在匿名浏览会话期间放入 Web 商店购物车中进行以便未来购买的商品将不会保存在用户的计算机上。

用户将无法在匿名浏览会话期间登录电子邮件或社交媒体账户。

在匿名窗口中浏览的用户将受到来自任何访问的网站或下载文件启动的病毒的保护。

The activities of a user browsing in an anonymous window will not be visible to people who monitor the user's network, such as the system administrator.

Items placed in a Web store's shopping cart for future purchase during the anonymous browsing session will not be saved on the user's computer.

A user will not be able to log in to e-mail or social media accounts during the anonymous browsing session.

A user browsing in an anonymous window will be protected from viruses launched from any web sites visited or files downloaded.

high_school_computer_science/dev/1

在下面的程序中，x的初始值为5，y的初始值为10。 如果 (X < O) { 显示 ("Foxtrot") } 否则 { 如果 (X > y) { 显示 ("Hotel") } 否则 { 如果 (y > O) { 显示 ("November") } 否则 { 显示 ("Yankee") } } } 运行程序后显示的结果是什么？

In the program below, the initial value of x is 5 and the initial value of y is 10. IF (X < O) { DISPLAY ("Foxtrot") } ELSE { IF (X > y) { DISPLAY ("Hotel") } ELSE { IF (y > O) { DISPLAY ("November") } ELSE { DISPLAY ("Yankee") } } } What is displayed as a result of running the program?

Foxtrot

Hotel

November

Yankee

Foxtrot

Hotel

November

Yankee

high_school_computer_science/dev/3