当前位置：文档之家› 上外阅读教程4 课后习题答案

上外阅读教程4 课后习题答案

Unit 1 Animals and Their Rights

READING1

Check Your Vocabulary A

1.d

2.b

3.g

4.e

5.h

6.c

7.a

8.i

9.f

Check Your Vocabulary B

1.Many children at first refuse to eat animal flesh. They later become to eating it

just because their parents persuade them to eat it.

2.There are two different and conflicting attitudes towards animals; they are

carefully separated so that the contradiction between the two hardly causes trouble.

3.Pictures and stories deliberately avoid presenting the real situation in our

modern farms. Children, therefore, are kept from seeing the reality.

4.The difficulty will be that non-vegetarian parents do not let their children know

about the gruesome side of the story, as they are afraid to refuse to eat meat at meals.

5.Unfortunately, non-vegetarian parents will strongly disapprove of their children’s

unwillingness to eat meat.

READING2

Check Your Vocabulary A

1. malevolent

2.misdirected

3.alleviate

4.simulation

5.potent

6.arouse

7.placate

8. apathetic

9.therapy 10.alternative 11.expedient 12.vilified

READING3

Check Your Vocabulary A

1.balance

2.attached department

3.wickedness; evils

4.pressure

5.claim that are has evidence or seen what has happened

6.a place where birds are protected and allowed to live freely

7. the power to carry out legal judgment

8. dirty 9.not having to perform 10.crimes

Check Your Vocabulary B

1.When his animals are being experimented on, the act does not take effect.

2.Your experimenter is not defying law.

3.Researchers at Louisiana University launched an eight-year, $2 million project

funded by the Department of Defense. They use tools to hold cats firmly and they then remove cat’s skulls and shoot in the head.

4.The experimenters claim that their purpose for this kind of experiment is to find a

way of curing brain-wounded soldiers so that they can later go back to military service.

5.Psychologists used medical operations to turn around the eyes of young cats.

6.There is other evidence showing that cats were not adequately anesthetized

while experimenters cut their eye muscles; animal experimentation was done by people who were not trained and did not have licenses to operate on animals;

and mother cats were so agitated by experiments on them that they ate their babies.

READING4

Check Your Vocabulary A

1.denounced

2.confinement

3.inflicted

4.defied

5. consensus

6.defiance

Unit 2 Crime and Punishment

READING1

Check Your Vocabulary A

1.minor: people who are under the age of 18

2.brutally: cruelly

3.sympathy: feeling of pity

4.severe: harsh

5.innocent: not guilty of a crime

6.proponent: supporter

7.controversy: argument, opposing views

Check Your Vocabulary B

1.convicted

2. Commit

3.proponent

4.abused

5.penalty

6. controversies

7.brutal

8.severe

9.executed 10.appealing

READING2

Check Your Vocabulary A

1.Now we can enjoy the benefits and list in what ways we benefit from his death.

2.There must be some other benefit by fastening Harding into a chair in a small

room and poisoning him to death with gas.

3.Now even people who are eloquently in support of executing people, such as

Arizona Attorney Grant woods, who attract a lot of public attention, believe that the death penalty will keep people from committing crimes.

4.But even killing a small number of murders will have great impact on people.

5.Perhaps the benefit we get from killing Harding is not easy to see.

Check Your Vocabulary B

1.reaping

2.abolish

3.counted up

4.serves

5.revenge

6.free up

7.strapped

8.tangible

9.figured 10.barbaric

READING3

Check Your Comprehension B

1.Her voice and facial expressions show that she is sometimes deep in sorrow

sometimes furious beyond her control.

2.This sense of justice, like many other basic beliefs, is such a necessary element

for us to maintain our psychological health that we take for granted and hardly ever become aware of its existence until one day justice is severely violated.

3.People’s opinions greatly differ as to what is the proper way for correcting

punishing wrong/criminal behavior.

4.Europeans are quite passionate when coming to the issues of taking tough

measures on political violence.

Check Your Vocabulary B

1. oscillating

2. tremulous

3.manslaughter

4.slain

5.reconcile

6.sorely

7.equilibrium

8.rehabilitation

READING4

Check Your Comprehension B

1.I carefully examined Ton y’s bed to see if he had dirtied it with his body fluids.

2.When I looked at the sickly man, I could not imagine that he used to be clean and

neat, serious, and determined and that he robbered a bank and killed a cop.

3.Many people in the underworld believed that Tony should have done something

for his partners, but he did nothing. This had hurt his partners. The underworld people believed that Tony’s partners had been betrayed.

4.Words had gone around that Tony’s wife was murdered that because the

underworld wanted revenge against Tony for the death of his three crime partners.

5.The lights shining in the window made the hollows in his dark face look deeper,

making his look somewhat evil.

Check Your Vocabulary B

1.executed

2.underworld

3.copping out

4.eerily

5.malevolent

6.luminous

7. vent

8.intelligble

Unit3 Gun Ownership and Censorship

READING1

Check Your Comprehension B

1. (The figures and cases of gun accidents and killing) surely will make people think twice before they insist on having their rights to own guns.

2. If it takes longer time to own a gun, then it will reduce the chances of people who use guns to harm or kill other people on impulse.

3. A gun safety program should be made a must for gun owners, especially those who buy guns for the first time.

4. Opponents of gun control also think that gun control is similar to censorship. However, with censorship, when I cannot speak certain things, my quality of life may be lowered, but I will still be alive.

Check Your Vocabulary A

1.bear/keep

2.ensure/assure

3.place

4.protect/enjoy

5.enforce/pass

6.face

7.enjoy/gain/exercise/ensure/assure

8.exercise

Check Your Vocabulary B

1.viciously

2.antique

3.mandatory

4.bloodshed

5.infringed

6.perception

7.institute

8.legitimate

https://www.doczj.com/doc/25868501.html,itia 10.censorship

READING2

Check Your Comprehension B

1. Houses where people live are far apart. Few vehicles are on the roads. The landscape around you is empty and bare, so that you will not be able to find anywhere to hide when in danger.

2.Even when I was inside my car, I was still liable to be attacked, and without

protection.

3.I drove over to him and told him it was a private and legally protected place.

4.I am not the type that gets excessively worried about my own security, nor am I

willing to take risks, but I thought I needed more protection than what I had.

5.Just those words and actions spoke in threats and violence, my gesturing with the

pistol was a reply in the same rude and violent style, the only way that they could understand.

6.I am a pacifist by nature. That peaceful nature inside me makes me sad at the

thought that perhaps women can only be free and equal when they are armed. Check Your Vocabulary A

1. convinced

2.precautions

3.stroll

4.opinions

5.tactic

6.vulnerable

7.exploration

https://www.doczj.com/doc/25868501.html,bat

9.concealed 10.slash 11.belligerent 12.rock 13.desolate 14.wield

Check your Vocabulary B

1.swerved

2.trespassing

3.saddened

4.slashed

5. paranoid

6.prowling

READING3

Check Your Comprehension B

1.The policeman recognized that the person who threatened and followed me was

also reported to have done the same thing someone else years ago and he immediately took me away from my house.

2.At the court, I learned that the person who threatened to rape and kill me was

mentally ill, but somehow was neglected and not placed in a mental hospital. 3.In this part of the countryside of the Michigan, people are keen on keeping and

using guns.

4.When you keep a gun to protect yourself, you live in constant fear and worry.

5.I was not killed, but I changed.

Check your Vocabulary

1.idyllic

2.assailant

3.paranoia

4.deterrent

5.flinch

6.close-knit

7.propelled 8.incarcerated

READING4

Check Your Comprehension B

1.That day my husband Jim Brady-------the press secretary of Ronald Reagan, was

(permanently crippled by the assassin’s bullet and therefore) added to the list of the victims of American handgun war.

2.Under the circumstance, Congress votes for a salary increase for all the

congressmen.

3.The National Rifle Association expects the public to appease their anger so that

there would be no more anger directed at the policymakers.

4.Like me , people in the nation who make sure that laws are obeyed, who put their

life in danger for us every day, are not willing to hand a handgun to another assassin like John Hinckley.

5.Jim Brady knows that it is important to have a waiting time (for people who apply

for purchasing guns). He knows that as he is living through the agony and suffering of his gun wound.

Check Your Vocabulary A

1.legacy

2. spree

3.endorsed/endorses/will endorse

4.assaults

5. outraged

6.gratified

7.carnage

8.escalate

9.legislate Check Your Vocabulary B

1.alarming/appalling

2.easy

3.growing/alarming

4.mindless

5.appalling/deadly

6.deadly

7.vast/growing

8.convicted

Unit5 Motivation or unhealthy Experience (Competition)

READING1

Check Your Comprehension B

https://www.doczj.com/doc/25868501.html,petition plays such an important role in our culture that it is common to see

even adults shouting and swearing on Sunday afternoons (when watching baseball games). This is ridiculous and I feel bad about it.

2.From my own experience, I don’t think we can develop deep and full

relationships by trying to compete and win against a common enemy.

3.If my success means that I have to be better than others, I don’t think I’ll ever

have real satisfaction because I have to keep thinking of how to outdo others, which is very unpleasant and exhausting.

4.Even when I reach the top position, I will not feel safe as all those below me will

be waiting to outdo me and try to grab the position from me.

5.I start to see that my confidence in my personal value and worth is dependent on

how much better I am than so many others in so many activities.

6.Only when we begin to realize that there is no such a thing as healthy

competition can we begin to live more normal and richer lives.

Check Your vocabulary B

1.contradicition

2.exclusive

3.conditional

4.outweigh

5.incalculable

6.induce

7. treadmill

8.unjustifiable

9.hysteria 10.outweigh

READING2

Check Your Comprehension B

1.Your knew that one had healthy self-esteem when he/she could enjoy competing

in a hobby,

which he/she was not good at.

2. A true competition is one in which you don’t know for sure whether or not you’ll

be able to achieve your aim.

3.For many of us, competition is an additional ingredient that keeps our life

interesting, makes us alert and active, and enables us to be more creative and productive.

4.It can become a good part of our life and exerts a great (massive) influence on

how we live.

5.Parents must also set an example of how to compete pleasantly in their own

lives.

Check Your Vocabulary

1.pervasive

2.defective

3.promote

4.sabotaged

5.narcissistic

6.graceful

7.toxic

8.stellar

READING3

Check Your Comprehension B

https://www.doczj.com/doc/25868501.html,petition can be fun, but we may be overenthusiastic and unreasonable about

it.

2.Candidates who sit in a test performance in order to join certain bands can get

undeniably violent and aggressive.

3.Feel free to find a gift of yours, develop it, and embarrass those who dare to

challenge you.

4.If competition isn’t fun and people find themselves feeling extremely worried

about an event they are competing in, then why not stop going through it? Check Your Vocabulary

1.disrespectful

2.outdo

3.audition

4.responsibility

5.scared

5.dread 7.gripes 8.vicious 9.depress 10.ironic

READING4

Check Your Vocabulary A

1. take on

2.subject someone to

3.at full speed

4.at all costs

5.pit—against

6. in charge

7.step in

8.disservice

9.distorted

Check Your Vocabulary B

1.downplay

2.realms

3.ostracism

4.paralysis

5.impose

6.ethic

7.temperament

8.steer

Unit6 Me and Another Me (Human Cloning)

READING1

Check Your Vocabulary A

1.News about cloning breakthroughs is usually reported disapprovingly, yet on the

arrival of CC last week. These disapproving voices could hardly be heard-------they were covered up by a chorus of gentle and loving reports from the press crops, who were charmed by CO’s cuteness.

2.So far in the clone debate the emotional aspect has been largely overlooked, yet

the arrival of CC brings it into force.

3.With the arrival of CC last week, the cloning debate, which began in 1997 when

Dolly was cloned, became heated and important again.

4.The Texas lab’s success rate is as low as 1 out of 87, but it is not surprising or

uncommon in cloning work. Generally, one successful clone means dozens of dead embryos in the lab.

5.It is hard to say how much of an animal’s personality is genetically written and

how much is decided by environment, so temperament of a clone pet is also a matter of chance.

6.They regarded CC as a test of how much people can tolerate human cloning

ethically, and they worry because this trial experiment has been received so well. Check Your Vocabulary B

1.subtext

2.surrogate

3.hostility

4.well-heeled

5.duplicate

6.felines

7.toss-up

8.split

9.fused 10.confounded

READING2

Check Your Comprehension B

1.Academics and the public felt disturbed at last week’s news of the first cloned

sheep, since it seems possible that human beings might be the next species to be cloned.

2.Human dignity would indeed be violated if a cloned individual was judged to be

inferior, and entitled to less rights or importance than other humans.

3.The fact that infertile couples have other choices does not give the right to

prevent them from trying cloning.

4.Democratic societies generally only ban things when there is convincing evidence

of harm that they may bring.

5.If cloned humans are not safe in our world, the rest of us are not safe either. Check Your Vocabulary

1.grow out of

https://www.doczj.com/doc/25868501.html,e up with

3.prompt/turn out

4.stock

5.take advantage of

6.make a chance

https://www.doczj.com/doc/25868501.html,yers of

READING3

Check Your Vocabulary B

1.skeptical

2.cracked

3.plundered

4.hurdle

5.ominously

6.breached

7.flinched

8.apprehension

9.draconian 10.loomed

READING4

Check Your Vocabulary

1.vindicated

2.spawned

3.defective

4.suttle

5.misconception

6.justified

7.superficial

8.term

9.crucial

各大学教材课后习题答案网址

各大学教材课后习题答案网址《线性代数》（同济第四版）课后习题答案（完整版）高等数学（同济第五版）课后答案（PDF格式，共527页）中国近现代史纲要课后题答案曼昆《经济学原理》课后习题解答 21世纪大学英语读写教程（第三册）参考答案谢希仁《计算机网络教程》（第五版）习题参考答案（共48页）《概率论与数理统计》习题答案 http:// 《模拟电子技术基础》详细习题答案（童诗白，华成英版，高教版）《机械设计》课后习题答案（高教版，第八版，西北工业大学）《大学物理》完整习题答案 .com/viewthread.php?tid=217&fromuid=164951 《管理学》课后答案（周三多）机械设计基础(第五版)习题答案[杨可桢等主编] 程守洙、江之永主编《普通物理学》（第五版）详细解答及辅导 .php?tid=3&fromuid=164951 新视野大学英语课本详解（四册全） 21世纪大学英语读写教程（第四册）课后答案新视野大学英语读写教程3册的课后习题答案 1

新视野大学英语第四册答案（第二版）《中国近现代史》选择题全集（共含250道题目和答案）《电工学》课后习题答案（第六版，上册，秦曾煌主编）完整的英文原版曼昆宏观、微观经济学答案《数字电子技术基础》习题答案（阎石，第五版）《电路》习题答案上（邱关源，第五版）《电工学》习题答案（第六版，秦曾煌） https://www.doczj.com/doc/25868501.html,/viewthread.php?tid=112&fromuid=164951 21世纪大学英语读写教程（第三册）课文翻译《生物化学》复习资料大全（3套试卷及答案+各章习题集）《模拟电子技术基础》课后习题答案（共10章）ewthread.php?tid=21&fromuid=164951 《概率论与数理统计及其应用》课后答案（浙江大学盛骤谢式千编著）《理论力学》课后习题答案（赫桐生，高教版）《全新版大学英语综合教程》（第四册）练习答案及课文译文viewthread.php?tid=78&fromuid=164951 《化工原理答案》课后习题答案（高教出版社，王志魁主编，第三版）《国际贸易》课后习题答案（海闻P.林德特王新奎）大学英语综合教程1-4册练习答案 read.php?tid=1282&fromuid=164951 《流体力学》习题答案《传热学》课后习题答案（第四版）高等数学习题答案及提示

全新版大学英语(第二版)综合教程4课后练习答案

全新版大学英语综合教程4（第二版）习题答案 Unit 1 Vocabulary I. 1. 1) alliance 2) at the cost of 3) stroke 4) limp 5) minus 6) regions 7) declarations 8) siege 9) raw 10) bide his time 11) have taken their toll 12) in the case of 2. 1) is faced with 2) get bogged down 3) is pressing on / pressed on 4) drag on 5) get by 6) dine out 7) have cut back 8) get through 3. 1) lead to the conquest of cancer in the near future 2) has been brought to a halt by the delayed arrival of raw materials due to the dock workers’ strike 3) will/should never get in the way of her career 4) caught the foreign minister off guard 5) of the electronic calculator has rendered the slide rule out of date/obsolete 4. 1) Being faced with … the occupation of … regions 2) crucial to … efficient … to reckon with … weaken … be brought to a halt 3) a heroic … the decisive … turned the tide … siege … by launching II. More Synonyms in Context 1) During the First World War, battles occurred here and there over vast areas. Some of the most dramatic fighting took place in the gloomy trenches of France and Belgium. 2) Elizabeth made careful preparations for the interview and her efforts / homework paid off. 3) I spent hours trying to talk him into accepting the settlement, but he turned a deaf ear to all my words. 4) Pneumonia had severely weakened her body, and I wondered how her fragile body could withstand the harsh weather. III. Usage 1) fall ill 2) lay dead at home for two weeks 3) dropped dead from a heart attack 4) fell asleep. 5) marrying young 6) to sit still for longer than a few minutes

数据库系统基础教程(第二版)课后习题答案

Database Systems: The Complete Book Solutions for Chapter 2 Solutions for Section 2.1 Exercise 2.1.1 The E/R Diagram. Exercise 2.1.8(a) The E/R Diagram Kobvxybz Solutions for Section 2.2 Exercise 2.2.1 The Addresses entity set is nothing but a single address, so we would prefer to make address an attribute of Customers. Were the bank to record several addresses for a customer, then it might make sense to have an Addresses entity set and make Lives-at a many-many relationship. The Acct-Sets entity set is useless. Each customer has a unique account set containing his or her accounts. However, relating customers directly to their accounts in a many-many relationship conveys the same information and eliminates the account-set concept altogether. Solutions for Section 2.3 Exercise 2.3.1(a) Keys ssNo and number are appropriate for Customers and Accounts, respectively. Also, we think it does not make sense for an account to be related to zero customers, so we should round the edge connecting Owns to Customers. It does not seem inappropriate to have a customer with 0 accounts;

全新版大学英语综合教程4课后习题含答案

全新版大学英语综合教程4课后习题答案 Unit 1 I. Vocabulary 1. 1) alliance 2) at the cost of 3) stroke 4) limp 5) minus 6) regions 7) declarations 8) siege 9) raw 10) bide his time 11) have taken their toll 12) in the case of 2. 1) is faced with 2) get bogged down 3) is pressing on / pressed on 4) drag on 5) get by 6) dine out 7) have cut back 8) get through 3. 1)The rapid advance in gene therapy may lead to the conquest of cancer in the near future. 2)Production in many factories has been brought to a halt by the delayed arrival of raw materials due to the dock workers’strike. 3)Sara has made up her mind that her leisure interests will/should never get in the way of her career. 4)Obviously the reporter's question caught the foreign minister off guard. 5)The introduction of the electronic calculator has rendered the slide rule out of date. 4. 1)Being faced with an enemy forces much superior to ours, we had to give up the occupation of big cities and retreat to the rural and mountainous regions to build up our bases. 2)Unity is crucial to the efficient operation of an organization. Failure to reckon with this problem will weaken its strength. In many cases, work may be brought to a halt by constant internal struggle in an organization. 3)The Red Army fought a heroic battle at Stalingrad and won the decisive victory against the Germans.In fact, this battle turned the tide in the Second World War. During this famous battle, the Soviet troops withstood the German siege and weakened the German army by launching a series of counterattacks. II. More Synonyms in Context 1) During the First World War, battles occurred here and there over vast areas. Some of the most dramatic fighting took place in the gloomy trenches of France and Belgium. 2) Elizabeth made careful preparations for the interview and her efforts / homework paid off. 3) I spent hours trying to talk him into accepting the settlement, but he turned a deaf ear to all my words.

大学教材课后习题答案免费下载链接下部

大学教材课后习题答案免费下载链接（上中下）190-290 本资料由https://www.doczj.com/doc/25868501.html,上网购返利网分享汽车理论习题答案(考研_作业).pdf→→ https://www.doczj.com/doc/25868501.html,/s/1zobam 汽车理论第五版_课后习题答案(正确).pdf→→ https://www.doczj.com/doc/25868501.html,/s/1o67DaHk 波动习题答案.pdf→→https://www.doczj.com/doc/25868501.html,/s/1pJDGFyj 泵与风机课后习题答案.pdf→→https://www.doczj.com/doc/25868501.html,/s/1gdBph3H 流体力学习题解答李晓燕吴邦喜.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1qWM2gAo 液压与气压传动习题答案.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1bnksUmV 物理化学第五版习题解答（上下册）.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1sjvvFPj 物理学教程第二版马文蔚下册课后答案完整版_cropped.pdf→→https://www.doczj.com/doc/25868501.html,/s/1sj98Mct 物理学第五版上册习题答案.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1jG1F9NS 王勖成《有限单元法》1-5章课后习题答案.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1nt8vc3B 理论力学教程_第三版_周衍柏_课后习题答案_总汇(1).pdf→→

理论力学教程_第三版_周衍柏_课后习题答案_总汇.pdf→→https://www.doczj.com/doc/25868501.html,/s/1eQABmxW 电力系统分析课后习题答案.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1bngpktD 电动力学习题答案chapter5.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1pJ7AZ5x 电子商务法律与法规综合复习题与答案.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1c0nEFUo 电子测量技术基础课后习题答案上1,2,5,6,7,8.pdf→→https://www.doczj.com/doc/25868501.html,/s/1hq3f7Is 电子线路习题答案梁明理版.pdf→→ https://www.doczj.com/doc/25868501.html,/s/1bn5rEIr 电工学简明教程（第二版）学习辅导与习题解答.pdf→→https://www.doczj.com/doc/25868501.html,/s/1mgHQ6xi 电机与拖动基础第三版李发海答案（全）.pdf→→https://www.doczj.com/doc/25868501.html,/s/1dD25KyP 电气测试技术第三版_课后习题答案%28林德杰%29.pdf→→https://www.doczj.com/doc/25868501.html,/s/1jGwVRE2 电磁场与电磁波习题答案 (6).pdf→→ https://www.doczj.com/doc/25868501.html,/s/1bnrK3pX 电磁场与电磁波习题答案 (7).pdf→→

工程数学基础教程课后习题答案

工程数学基础习题解答

习题一 A

一、判断题 1.√；， 2.√； 3.×； 4.×； 5.×； 6.×； 7.×； 8.√； 9.√；10.×. 二、填空题 1.;C C A B 2.111(){1,2,3,4},(){,,},(){,,},(){1,4},(){2,3};f f a b e f A a b e f B f b --=====D R 3.满; 4.2sup = E ,3inf -=E ; 5.0; 6.0; 7. n ; 8.Y . B 1.证 ()y f A B ?∈?,x A B ?∈?使得)(x f y =.由x A B ∈?,得x A ∈,且x B ∈故()()y f x f A =∈且()y f B ∈,即()()y f A f B ∈?,因此()()()f A B f A f B ???. 当f 是单射时,只需证明()()()f A f B f A B ???即可： ()()(),y f A f B f ?∈??R f 由是单射知,(). (),(),1X y f x y f A y f B x ?=∈∈∈使得且 ,,()(),x A x B x A B y f x f A B ∴∈∈∈?=∈?且即从而故()()()f A f B f A B ???. 是可能的，例如, 2:,[2, 0],[1, 3],[1, 0].f x x A B A B =-=-?=-取则()([1,0])[0, 1], f A B f ?=-=于是而 [][]()()0, 4[0, 9]0, 4.f A f B ?=?=从而有 . 2. 证（1）n ?∈,有)2 ,2(12 ,12][-?-+-n n ,故 ∞ =-?-+-1)2 ,2(12 12][n n ,n . 另一方面,)2 ,2(-∈?x ,k ?∈ ,使][12 ,12k k x -+-∈,故 ∞ =-+-∈1 ][12 12n n ,n x ,于是 ? -)2 ,2( ∞ =-+-1 ][12 12n n ,n . 因此, ∞ =-+-= -1 ][12 ,12)2 ,2(n n n . （2）n ?∈,有)12 ,12(]2 ,2[n n +--?-,故 ∞ =+--?-1)12 ,12(]2 ,2[n n n . 另一方面,对任意]2 ,2[-?x ,即2>x ,k ?∈ ,使得212>+>k x ,即 )12 ,12(k k x +--?,从而 ∞ =+--?1)12 ,12(n n n x ，故 ∞ =-?+--1 ]2,2[)12 ,12(n n n .

全新版大学英语综合教程4课后习题集答案解析

全新版大学英语综合教程4【第二版】习题答案主编：李荫华上海外语教育出版社 Unit 1 Part II Text A lexf Organization Parts Paragraphs Main Ideas Part One Paras 1-2 Introduction — Both Napoleon's and Hitler's military campaigns failed because of the severity of the Russian winter. Part Two Paras 3-11 Napoleon's military campaign against Russia Part Three Paras 12-20 Hitler's military campaign against the Soviet Union Part Four Para 21 Conclusion—the elements of nature must be rekoned with in any military campaign. 2. Sections Paragraphs Main Ideas Section One Paras 12-13 Hitler's blitzkrieg against Russia and Stalin's scorched earth policy Section Two Paras 14-18 the battles fought at Leningrad, Moscow and Stalingrad Section Three Paras 19-20 the Russian counter-offensive and the outcome of the war Vocabulary I. 1. 1) alliance 2) at the cost of 3) stroke 4) limp 5) minus 6) regions 7) declarations 8) siege 9) raw 10) bide his time 11) have taken their toll 12) in the case of 2. 1) is faced with 2) get bogged down 3) is pressing on / pressed on 4) drag on 5) get by 6) dine out

linux课后习题答案教材课后习题参考答案

第 1 章Linux 概况一、选择题 1、下列哪个选项不是Linux 支持的？ A. 多用户 B. 超进程 C. 可移植 D. 多进程 2、Linux 是所谓的“Free Software”，这个“Free”的含义是什么？ A. Linux 不需要付费 B. Linux 发行商不能向用户收费 C. Linux 可自由修改和发布 D.只有Linux 的作者才能向用户收费 3、以下关于Linux 内核版本的说法，错误的是？ A. 依次表示为主版本号.次版本号.修正次数的形式 B. 1.2.2 表示稳定的发行版 C. 2.2.6 表示对内核2.2 的第6 次修正 D. 1.3.2 表示稳定的发行版 4、以下哪个软件不是Linux 发行版本？ A. 红旗 Server 4 B. Solaris 10 C. RedHat 9 D. Fedora 8 5、与Windows 相比Linux 在哪个方面相对应用得较少？ A. 桌面 B. 嵌入式系统 C. 服务器 D. 集群 A6、Linux 系统各组成部分中哪一项是基础？ A．内核 B. X Window C. Shell D. Gnome B7、Linux 内核管理不包括的子系统是哪个？ A. 进程管理系统 B. 内存管理系统 C. 文件管理系统 D. 硬件管理系统 A8、下面关于Shell 的说法，不正确的是哪个？ A. 操作系统的外壳 B. 用户与Linux 内核之间的接口 C. 一种和C 类似的高级程序设计语言 D. 一个命令语言解释器 B9、以下哪种Shell 类型在Linux 环境下不能使用? A.B Shell B.K Shel C.R Shell D.Bash 10、在Linux 中把声卡当作何种设备？ A. 字符设备 B. 输出设备 C. 块设备 D. 网络设备二、填空题 1、Linux 采用 LRU 算法（最近最少使用）算法，淘汰最近没有访问的

MATLAB基础教程薛山第二版课后习题答案讲解

《及应用》实验指导书《及应用》实验指导书班级： T1243-7 姓名：柏元强学号： 20120430724 总评成绩：汽车工程学院电测与汽车数字应用中心

目录实验04051001 语言基础..................... 错误!未指定书签。实验04051002 科学计算及绘图............. 1错误!未指定书签。实验04051003 综合实例编程.. (31)

实验04051001 语言基础 1实验目的 1) 熟悉的运行环境 2) 掌握的矩阵和数组的运算 3) 掌握符号表达式的创建 4) 熟悉符号方程的求解 2实验内容第二章 1. 创建的变量，并进行计算。 (1) 87，190，计算、、a*b 。 (87); (190); *b (2) 创建 8 类型的变量，数值与(1)中相同，进行相同的计算。 8(87); 8(190); *b 2．计算： (1) 操作成绩报告成绩

(2) e3 (3) (60) (3) (3*4) 3．设，，计算： (1) (2) (3) 23; (4*u*v)(v) (((u))^2)/(v^2) ((3*v))/(u*v) 4．计算如下表达式： (1) (2) (3-5*i)*(4+2*i) (2-8*i) 5．判断下面语句的运算结果。 (1) 4 < 20

(2) 4 <= 20 (3) 4 20 (4) 4 20 (5) 'b'<'B' 4 < 20 , 4 <= 20,4 20,4 20,'b'<'B' 6．设，，，，判断下面表达式的值。 (1) (2) (3) (4) (5) (6) 395837; a><>>> 7．编写脚本，计算上面第2题中的表达式。 ('(60)='); ((60)) ('(3)='); ((3)) ('(3*4)='); ((3*4)) 8．编写脚本，输出上面第6题中的表达式的值。395837;

ml基础教程课后习题解答

X M L基础教程课后习题解答内部编号：（YUUT-TBBY-MMUT-URRUY-UOOY-DBUYI-0128）

XML基础教程课后习题习题一 1．答：HTML是用来编写Web页的语言、不允许用户自定义标记，HTML体现数据的显示格式。XML描述数据的组织结构、可自定义标记，其标记名称是对标记所包含的数据内容含义的抽象，而不是数据的显示格式。 2．答：使用UTF-8保存 5．答：（1）不可以，（2）可以，（3）不可以 6．答：： time { display:block;font-size:18pt;font-weight:bold } hour { display:line;font-size:16pt;font-style:italic } mimute { display:line;font-size:9pt;font-weight:bold } 习题二1．答：（1）使用ANSI编码。（2）可以。（3）不合理。 2．答：不相同。 3．答：（1）和（2）。 4．答：。

5．答：“root”标记包含的文本内容都是空白字符。“a1”标记包含的文本内容:。“a2”标记包含的文本内容: 子曰"有朋自远方来,不亦乐乎"。习题三1．答：一个规范的XML文件如果和某个DTD文件相关联，并遵守该DTD文件规定的约束条件，就称之为有效的XML文件。 2．答：DTD文件的编码必须和其约束的XML文件的编码相一致。 3．答：无关。 4．答：(1) 使用SYSTEM文档类型声明的格式： (2) 使用PUBLIC文档类型声明的格式： 5．答：一定。 6．答：（1）约束标记“张三”必须有“学号”属性（2）约束标记“张三”必须有“学号”属性，而且学号的属性值是固定的220123。（3）约束标记“张三”可以有也可以没有“学号”属性。 7．答：ID类型的属性的属性值具有互斥性，即所有ID类型的属性的属性值必须互不相同。 8．答：不合理。 9．答：（1）、（3）和（4）。 10．答，不是有效的。将修改为有效：

大学物理学(第三版)课后习题参考答案

习题1 1.1选择题 (1) 一运动质点在某瞬时位于矢径),(y x r 的端点处，其速度大小为 (A)dt dr (B)dt r d (C)dt r d | | (D) 22)()(dt dy dt dx [答案：D] (2) 一质点作直线运动，某时刻的瞬时速度s m v /2 ，瞬时加速度2 /2s m a ，则一秒钟后质点的速度 (A)等于零 (B)等于-2m/s (C)等于2m/s (D)不能确定。 [答案：D] (3) 一质点沿半径为R 的圆周作匀速率运动，每t 秒转一圈，在2t 时间间隔中，其平均速度大小和平均速率大小分别为 (A) t R t R 2, 2 (B) t R 2,0 (C) 0,0 (D) 0,2t R [答案：B] 1.2填空题 (1) 一质点，以1 s m 的匀速率作半径为5m 的圆周运动，则该质点在5s 内，位移的大小是；经过的路程是。 [答案： 10m ； 5πm] (2) 一质点沿x 方向运动，其加速度随时间的变化关系为a=3+2t (SI)，如果初始时刻质点的速度v 0为5m·s -1，则当t 为3s 时，质点的速度v= 。 [答案： 23m·s -1 ] (3) 轮船在水上以相对于水的速度1V 航行，水流速度为2V ，一人相对于甲板以速度3V 行走。如人相对于岸静止，则1V 、2V 和3V 的关系是。 [答案： 0321 V V V ]

1.3 一个物体能否被看作质点，你认为主要由以下三个因素中哪个因素决定： (1) 物体的大小和形状； (2) 物体的内部结构； (3) 所研究问题的性质。解：只有当物体的尺寸远小于其运动范围时才可忽略其大小的影响，因此主要由所研究问题的性质决定。 1.4 下面几个质点运动学方程，哪个是匀变速直线运动？（1）x=4t-3；（2）x=-4t 3+3t 2+6；（3）x=-2t 2+8t+4；（4）x=2/t 2-4/t 。给出这个匀变速直线运动在t=3s 时的速度和加速度，并说明该时刻运动是加速的还是减速的。（x 单位为m ，t 单位为s ）解：匀变速直线运动即加速度为不等于零的常数时的运动。加速度又是位移对时间的两阶导数。于是可得（3）为匀变速直线运动。其速度和加速度表达式分别为 2 2484 dx v t dt d x a dt t=3s 时的速度和加速度分别为v =20m/s ，a =4m/s 2。因加速度为正所以是加速的。 1.5 在以下几种运动中，质点的切向加速度、法向加速度以及加速度哪些为零哪些不为零？ (1) 匀速直线运动；(2) 匀速曲线运动；(3) 变速直线运动；(4) 变速曲线运动。解：(1) 质点作匀速直线运动时，其切向加速度、法向加速度及加速度均为零； (2) 质点作匀速曲线运动时，其切向加速度为零，法向加速度和加速度均不为零； (3) 质点作变速直线运动时，其法向加速度为零，切向加速度和加速度均不为零； (4) 质点作变速曲线运动时，其切向加速度、法向加速度及加速度均不为零。 1.6 ｜r ｜与r 有无不同?t d d r 和d d r t 有无不同? t d d v 和t d d v 有无不同?其不同在哪里?试举例说明．解：（1）r 是位移的模， r 是位矢的模的增量，即r 12r r ，12r r r ；（2） t d d r 是速度的模，即t d d r v t s d d . t r d d 只是速度在径向上的分量. ∵有r r ?r （式中r ?叫做单位矢），则 t ?r ?t r t d d d d d d r r r 式中 t r d d 就是速度在径向上的分量，

全新版大学英语综合教程4课后习题标准答案

全新版大学英语综合教程4课后习题答案

————————————————————————————————作者：————————————————————————————————日期： 2

研究生英语教材课后习题解答上册

Unit 1 Text A Exercises 1. Reading comprehension A. Read the text and answer the following questions. 1. What, according to the author, do Americans love? Cite examples to illustrate your point. Americans love new frontiers. For example, they hanker after wide-open spaces; they like to explore; they like to make rules but refuse to follow them. 2. Is there a place on earth where you can go and be yourself? What is the place according to the author? According to the author, there is a place—cyberspace, where you can go and be yourself. 3. What metaphor does the author use to describe cyberspace? Why does she use such a metaphor? Real estate, because both real estate and cyberspace consist of different parts and each part is suitable for a particular group of people. 4. Does the author approve of regulating cyberspace? Why or why not? Yes, but first, it is fundamental to understand the nature of cyberspace. 5. What does the author think is needed in cyberspace besides government

文档之家

上外阅读教程4 课后习题答案

各大学教材课后习题答案网址

全新版大学英语(第二版)综合教程4课后练习答案

数据库系统基础教程(第二版)课后习题答案

全新版大学英语综合教程4课后习题含答案

大学教材课后习题答案免费下载链接下部

工程数学基础教程课后习题答案

最新大学物理实验教材课后思考题答案

全新版大学英语综合教程4课后习题集答案解析

linux课后习题答案教材课后习题参考答案

MATLAB基础教程薛山第二版课后习题答案讲解

最新部编人教版五年级下册数学课本课后习题参考答案

ml基础教程课后习题解答

大学物理学(第三版)课后习题参考答案

全新版大学英语综合教程4课后习题标准答案

研究生英语教材课后习题解答上册