Death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two phases --- clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived(復活). Biological death occurs when changes in the organism lead to the “breaking up” of vital cells and tissues. Death is then unchangeable and final.

Scientists have been seeking a way to prolong the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic sleep. By slowing down the body’s metabolism(新陳代謝), cooling delays the processes leading to biological death.

To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from an artery. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing. After two minutes Keta’s heart became active once more. After fifteen minutes, spontaneous(自發(fā)的)breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room. Her behavior differed little from that of a healthy animal.

1.For a person who suffers from the clinical death, _________.

A. his most important organs are damaged.

B. he still has the possibility of getting back to life.

C. he can not avoid final death.

D. he is still very much alive

2.Scientists try to make the time of clinical death longer in order to __________.

A. slow down the body’s metabolism.

B. bring vital cells and tissues back to active life.

C. cool the organism.

D. delay the coming of biological death.

3.How did the scientists put Keta into clinical death?

A. By putting her to sleep, lowering her temperature and draining her blood.

B. By surrounding her body with ice-bags and draining her blood.

C. By lowing her blood pressure and stopping her heart from beating.

D. By draining her blood, lowering her blood pressure and stopping her breathing.

4. All of the following indicate that the monkey has almost restored to her original physical state except the fact that__________.

A. her heart beat again.

B. she regained her normal breath.

C. she rejected a penicillin injection.

D. she acted as lively as a healthy monkey.

練習冊系列答案
相關習題

科目：高中英語 來源：2015-2016學年吉林長春市高一上學期第三次月考英語試卷（解析版） 題型：單項填空

The scientist knows nothing about the matter, because he is always ______ himself in scientific study.

A. burying B. devoting C. focusing D. concentrating

查看答案和解析>>

科目：高中英語 來源：2016屆浙江三校等高三第一次五校聯(lián)考英語試卷（解析版） 題型：閱讀理解

The day I became a mom was not the day my daughter was born, but seven years later. Up until that day, I had been too busy trying to survive my abusive marriage. I had spent all my energy trying to run a “perfect” home that would pass inspection each evening, and I didn’t see that my baby girl had become a child. I’d tried endlessly to please someone who could never be pleased and suddenly realized that the years had slipped by and could never be recaptured（重現(xiàn)）.

Oh, I had done the normal “motherly” things, like making sure my daughter got to ballet and tap and gym lessons. I went to all of her recitals and school concerts, parent-teacher conferences and open houses — alone. I ran interference during my husband’s anger when something was spilled at the dinner table, telling her, “It will be okay, Honey. Daddy’s not really mad at you.” I did all I could to protect her from hearing the awful shouting after he returned from a night of drinking. Finally I did the best thing I could do for my daughter and myself: I removed us from the home that wasn’t really a home at all.

That day I became a mom was the day my daughter and I were sitting in our new home having a calm, quiet dinner just as I had always wanted for her. We were talking about what she had done in school and suddenly her little hand knocked over the full glass of chocolate milk by her plate. As I watched the white tablecloth and freshly painted white wall become dark brown, I looked at her small face. It was filled with fear, knowing what the outcome of the event would have meant only a week before in her father’s presence. When I saw that look on her face and looked at the chocolate milk running down the wall, I simply started laughing. I am sure she thought I was crazy, but then she must have realized that I was thinking, “It’s a good thing your father isn’t here!” She started laughing with me, and we laughed until we cried. They were tears of joy and peace and were the first of many tears that we cried together. That was the day we knew that we were going to be okay.

Whenever either of us spills something, even now, seventeen years later, she says, “Remember the day I spilled the chocolate milk? I knew that day that you had done the right thing for us, and I will never forget it.”

That was the day I really became a mom. I discovered that being a mom isn’t only going to ballet, and tap and gym recitals, and attending every school concert and open house. It isn’t keeping a spotless house and preparing perfect meals. It certainly isn’t pretending things are normal when they are not. For me, being a mom started when I could laugh over spilled milk.

1.What was the writer mostly engaged in seventeen years ago?

A. Passing inspection from the community.

B. Trying very hard to please the baby girl.

C. Nurturing the baby girl to become a child.

D. Running a perfect home to satisfy her husband.

2.According to the writer, ______ is not the normal “motherly” things.

A. signing up kids for ballet and gym lessons

B. attending parent-teacher conferences

C. protecting kids when they are scolded by the father

D. going to kids’ school concerts and open houses

3.The underlined phrase “ran interference” can best be replaced by______.

A. informed her B. covered her

C. pleased her D. pardoned her

4.It can be inferred from the passage that______.

A. mum and daughter had led a miserable life before moving out

B. being a mum is not pretending things are normal when they are not

C. the daughter spilled the chocolate milk deliberately in the new home

D. mum and daughter laughed together at the funny paints on the wall

5.According to the passage, when did the writer become a real mom?

A. The day she gave birth to her daughter

B. The day she lost contact with her husband

C. The day she created a relaxing family atmosphere

D. The day she laughed at the spilled chocolate milk

查看答案和解析>>

科目：高中英語 來源：2016屆云南玉溪市高三第四次月考英語試卷（解析版） 題型：閱讀理解

Put sunscreen (防曬油) on before going out in the sun.

·Take it with you.

·Use it

— after a swim.

— every hour or so while playing outdoors.

— if you get sweaty.

·Cover up when the sun is overhead

— 10 a.m.—2 p.m..

— especially at lunch time.

·Get your suntan (曬黑) gradually and not too much.

·Controlled exposure (暴露) to sunshine helps avoid skin cancer.

Ask your chemist to recommend a suitable sunscreen.

Queensland Cancer Fund

P. O. Box

Spring Hill, QLD.4000

Phone (07) 8397077

Provided for community awareness by the Queensland Cancer

1.This passage is most likely to be ______.

A. an article from a student text book

B. a direction from a bottle of medicine

C. a suggestion from a chemist

D. an advertisement from a newspaper

2.Which statement is TRUE?

A. You should frequently put on sunscreen while playing outdoors.

B. You’ll never have skin cancer with controlled exposure.

C. You mustn’t stay outside from 10 a.m. to 2 p.m.

D. The more you get sunshine, the better your health will be.

3. According to the passage we can see that Queensland Cancer Fund wants to _____.

A. sell sunscreen, shirt and hat

B. help people guard against skin cancer

C. encourage people to play in the sun

D. make money out of sunscreen

4. If you want a sunscreen, you should ask _____ for advice.

A. the seller B. the advertiser

C. your doctor D. your parents

查看答案和解析>>

科目：高中英語 來源：2016屆山東師大附中高三上第三次模擬英語試卷（解析版） 題型：閱讀理解

What is the first thing you notice when you walk into a shop? The products displayed(展示)at the entrance? Or the soft background music?

But have you ever notice the smell? Unless it is bad，the answer is likely to be no．But while a shop’s scent may not be outstanding compared with sights and sounds，it is certainly there．And it is providing to be an increasing powerful tool in encouraging people to purchase．

A brand store has become famous for its distinctive scent which floats through the fairly dark hall and out to the entrance，via scent machines. A smell may be attractive but it may not just be used for freshening air．One sports goods company once reposed that when it first introduced scent into its stores，customers’intension to purchase increased by 80 percent．

When it comes to the best shopping streets in Pairs，scent is just as important to a brand’s success as the quality of its window displays and goods on sales．That is mainly because shopping is a very different experience to what it used to be．

Some years ago，the focus for brand name shopping was on a few people with sales assistants’disproving attitude and don’t-touch-what-you-can’t afford displays．Now the rise of electronic commerce(e-commerce)has opened up famous brands to a wider audience．But while e-shops can use sights and sounds，only bricks-and-mortar stores(實體店)can offer a full experience from the minute customers step through the door to the moment they leave．Another brand store seeks to be much more than a shop，but rather a destination．And scent is just one way to achieve this．

Now a famous store uses complex man-made smell to make sure that the soft scent of baby powder floats through the kid department，and coconut(椰子)scent in the swimsuit section．A department store has even opened a new lab，inviting customers on a journey into the store’s windows to smell books，pots and drawers，in search of their perfect scent.

1.According to the passage，what is an increasingly powerful tool in the success of some brand store?

A．Friendly assistant． B. Unique scents．

C．Soft background music D．a(chǎn)ttractive window display．

2.E-shops are mentioned in the passage to_____．

A．show the advantages of brick-and-mortar stores

B．urge shop assistants to change their attitude

C．push stores to use sights and sounds

D．introduce the rise of e-commerce

3.The underlined word“destination”in Paragraph 5 means_____．

A．a(chǎn) platform that exhibits goods

B．a(chǎn) spot where travelers like to stay

C. a place where customers love to go

D．a(chǎn) target that a store expects to meet

4.The main purpose of the passage is to________．

A．compare and evaluate B．examine and assess

C．a(chǎn)rgue and discuss D．inform and explain

查看答案和解析>>

科目：高中英語 來源：2016屆江蘇省常州市兩校高三聯(lián)考英語試卷（解析版） 題型：書面表達

閱讀下面的短文，然后按照要求寫一篇150詞左右的英語短文。

Right after the Second World War, Germany was in ruins. Almost all the houses, factories and schools were destroyed. Plenty of people were homeless as well as jobless. Worse still, the supply of water and electricity was often cut off in the city. Two American journalists interviewed a German family living in the basement. The husband was disabled from the war and the wife was just dismissed from a clothing company. Worse still, there were bills for them to pay—four children to care for and food to buy. Life was hard for them at that time.

After the interview, the journalists chatted with each other on the way back to the company.

“Do you think the Germans could rebuild their homeland?”

“Absolutely.”

“But I can’t see any hope for the country at all. How can you be so certain about that?”

“Have you noticed what they put on the table in the basement? There was a vase of flowers. A nation, suffering at such moment, hasn’t forgotten about flowers. It shows that hopes are not lost. They are still able to dream. A nation with hope can create miracles. They are sure to be able to rebuild their homeland.”

【寫作內(nèi)容】

1. 以約30個詞概括上文的主要內(nèi)容；

2. 以約120個詞就夢想改變命運的話題談談你的想法，內(nèi)容包括：

(1) 你贊同文中的觀點嗎？

(2) 舉例證明你贊同或不贊同的原因；

(3) 談談你對夢想的看法以及你如何為實現(xiàn)夢想而努力。

【寫作要求】

1. 作文中可以使用親身經(jīng)歷或虛構的故事，也可以參照閱讀材料的內(nèi)容，但不得直接引用原文中的句子；

2. 作文中不能出現(xiàn)真實姓名和學校名稱。

【評分標準】 概括準確，語言規(guī)范，內(nèi)容合適，語篇連貫。

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

查看答案和解析>>

科目：高中英語 來源：2016屆江蘇省常州市兩校高三聯(lián)考英語試卷（解析版） 題型：單項填空

Since the 18th national congress of the Party in 2012, 79 senior officials, including five members of the Party’s central committee who once __________, have been investigated.

A. got their way B. got away with

C. got away from D. had power over

查看答案和解析>>

科目：高中英語 來源：2016屆貴州遵義航天高級中學高三第四次模擬英語試卷（解析版） 題型：閱讀理解

When should people be made to retire? 55? 65? Should there be a compulsory age limit?

Many old people work well into their 70s and 80s, running families, countries or corporations. Other people,however, despite being fit and highly talented, are forced to retire in their fifties or even earlier because of the regulations of a company or the nation. This essay will examine whether people should be allowed to continue working as long as they want or whether they should be encouraged to retire at a particular stage.

Some people think there are several arguments for allowing older people to continue working as long as they are able. First of all, older employees have an immense amount of knowledge and experience which can be lost to a business or organization if they are made to retire. A second point is that older employees are often extremely loyal employees and are more willing to carry out company policies than younger less committed staff. However, a more important point is regarding the attitudes in society to old people. To force someone to resign or retire at 60 indicates that the society does not value the input of these people and that effectively their useful life is over. Age is irrelevant to a working life, surely if older employees are told they cannot work after 60, this is age discrimination. That they become old does not necessarily mean they are going to be sick. Old people could be more aware, experienced and committed than some youngsters.

Others, however, think that allowing older people to work indefinitely is not a good policy. Age alone is no guarantee of ability. Old people are only ambitious workaholics who are too selfish and self-centered to believe that a younger person could do better. Actually, many younger employees have more experience or skills than older staff, who may have been stuck in one area or unit for most of their working lives. Having compulsory retirement allows new ideas in an organization. In addition, without age limits, however, many people would continue to work purely because they did not have any other plans or roles. A third point of view is that older people should be rewarded by society for their life’s labor by being given generous pensions and the freedom to enjoy their leisure. We now have youngsters who can’t find jobs because old people are choosing not to retire. Old people are not retiring because this new generation of “old people” think they will never die due to modern advances in medicine.

With many young people unemployed or frustrated in low-level positions, there are often calls to compulsorily retire older workers. However, this can affect the older individual’s freedom and right to work and can deprive(剝奪) society of valuable experience and insights. I feel that giving workers more flexibility and choice over their retirement age will benefit society and the individual.

1.What is the purpose of this passage?

A. To explain the compulsory age limit.

B. To discuss the retirement age.

C. To examine people’s working life.

D. To introduce a particular stage.

2.Which of the following is NOT a reason for allowing old people to continue working according to the passage?

A. Their contribution should be valued.

B. Their experience should be made use of.

C. They can help the youngsters.

D. They are loyal employees.

3.It can be inferred in the fourth passage that ______.

A. The young people have more creative spirits

B. Modern advances in medicine make old people never die

C. Pensions and freedom are not given to the old now

D. Old people believe that a younger person could do better

4.The passage is arranged as follows:

查看答案和解析>>

科目：高中英語 來源：2016屆黑龍江大慶實驗中學高三12月月考英語試卷（解析版） 題型：閱讀理解

The Hunan Satellite TV(HNTV) show “Where are we going, Dad?” is a big hit. Many famous stars brought their children to a strange village alone, and they had to spend 72 hours with their children there. The program fully showed us a modern version of the “how to be a good father”. As the young parents today are too busy to take care of their children, this new form of“Lost on the way”played by nanny daddy and cute kids triggered（觸發(fā)）a lot of people’s emotional resonance（共鳴）. Both the kids and their parents will find that their hearts are being drawn closer. But this kind of feeling has just proved that there is a big spiritual barrier between the modern parents and children.

The TV shows like “Children are hard to support!”, “Where are we going, Dad?”, “hot mom” and “cute kids” are becoming more and more popular. All of these show the new parents’ confusion in children’s education and the appeal for the balance between career and family.

In real life, on the one hand the young parents feel helpless because they are too busy to accompany their children under the pressures of work and life; on the other hand they continue to do so. The data collected by HNTV show that nearly two-thirds of their audience are female, among whom 36% are aged from 25 to 34. We can imagine such a scene that one evening a young mother is watching the show with her young children, while her husband is still at work or trapped in socializing, or maybe is just playing computer games in the bedroom. The story of a child without the company of father is still going on. In fact, it is sometimes the same to mothers. In a modern family, it is often the old who take the responsibility of raising a child. The participation of mother in the children’s education is also very low.

It is just this kind of confusion where the parents have gone in the modern family education, and where the parents will guide their children to go that“Where are we going, Dad?”shows us. If a child wants to grow up healthily and safely into a modern citizen with independent personality and free spirit, it is very important for him or her to follow the parents who serve as their first teacher. Maybe this is the real reason why such kind of TV programs could get hot. The truth is that children will go where their parents go; and society will go where the children go.

1. Which of the following can be inferred in the passage?

A. Parents shouldn’t entirely leave the education of children to the old.

B. 36% of the audience of the program are female aged from 25-34.

C. The program shows us the confusion where the parents and children will go to play.

D. In a modern family it is often mothers who are responsible for raising a child.

2.Which one is the best title of the passage?

A. Confusion behind “Where are we going, dad?”

B. Modern Education is Important

C. Nanny Daddy and Cute Kids

D. New Problems in Modern Children’s Education

3.In raising a child in modern society, parents should __________.

A. play computer games with their children

B. break down the barrier between children and teachers

C. balance well between family and career

D. keep their children at home to avoid socializing

4.What attitude towards modern family education does the author express in the second paragraph?

A. Optimistic. B. Proud. C. Worried. D. Indifferent.

查看答案和解析>>

同步練習冊答案