Within even the weakest of human bodies lies ...

Within even the weakest of human bodies lies a life that is precious indeed--- ____           needs to be respected and honored.

A. something that      B. one           C. one that         D. something

高三英语单项填空中等难度题查看答案及解析

There’s no doubt that water is vital to any life. About 60 percent of the average adult human body is made of water. This includes most of your brain, heart, lungs, muscles and skin, and even about 30 percent of your bones. Yet there’s little scientific agreement about the exact amount of the stuff an individual should consume each day. So how much water do you actually need to drink to be healthy?

You may have heard that you should drink eight 8-ounce glasses of water a day. Yet, the downside of this rule, researchers say, is that drinking water by the glass is not the only way that humans take in it. The “8 X 8” rule essentially overlooks two big sources of daily water consumption. One such source is food. Everything you eat contains some water. Watermelons, for example, are more than 90 percent water by weight. Different diets naturally contain different amounts of waters, and the counts. The other key water sources are other beverages. Non-alcoholic drinks such as coffee, and tea, contain mostly water and all contribute to your hydration（水量）.

So, between all the food, water and other fluids you consume in a day, how much water should you aim to take in?

The National Academics of Sciences suggests that woman consume a total of approximately 2.7 liters (91 ounces) of warm from all beverages and foods each day and men 3.7 liters (125 ounces). But these are just general guidelines.

The truth is, there is no magic standard for hydration—everyone’s need vary depending on their age, weight, level of physical activity, general health and even the climate they live in. The more water you lose, the more water you’ll need to replace with food and drink. If you are looking for concrete advice, though, the best place to look is within. Drink up when you’re thirsty.

1.How does the author support the underlined sentence in Para 1?

A. By providing facts.

B. By asking a question.

C. By making a comparison.

D. By putting forward suggestions.

2.According to the “8 X 8” rule, how much water should we take in a day?

A. 8 ounces　　 B. 64 ounces

C. 91 ounces　　 D. 125 ounces

3.What’s the disadvantage of the “8 X 8” rule?

A. The water from both food and other beverages is ignored.

B. It includes the amount of water from both food and beverages.

C. It does not take water from drinks into account.

D. It overlooks the fact that we take in 90% of the water from fruits.

4.What can we infer from the final suggestion?

A. A man doing tiring physical work drunks less than 3.7 liters a week.

B. A person in good health drinks whenever he feels thirsty.

C. An overweight male in a hot summer drinks 125 ounces every two days.

D. A female eating a lot of watermelons drinks more than 91 ounces daily.

高三英语阅读理解困难题查看答案及解析

It is quite apparent that competition surrounds every aspect of human life whether in the United States or the Amazon rainforest. Without it we would not have grown into primates (灵长类动物) . Or we would probably still be struggling to sharpen a bronze tool while crawling around on four legs in search of meat. Without competition, Columbus wouldn’t have discovered America and Edison would never have invented the light bulb.

Friendship, like all relationships between two people, involves competition. It isn’t competition in a traditional sense because there are no goals to be scored and no prize. Perhaps the ecological definition --- the simultaneous (同时) demand by two or more organisms for limited environmental resources, such as nutrinents, living space, or light --- better explains it.

As in nature, high school life is governed by a set of laws, similar to a shortened version of Darwin’s theory of evolution, overpopulation, and competition. There is an abundance of high school students and to distinguish them, ranking and categorizing (分类) take place. In high school, friendships learn to coexist with competition even though at times the relationship is rough. In fact, in some circumstance, competition is too much of a burden for a friendship to bear, causing it to fall apart. College admission is the final high school objective. Four years of hard work is to achieve good grades, and a student’s fate is determined not only by these achievements, but by the records of thousands of other seniors trying to achieve a similar recognition.

Nevertheless, by necessity, competition between students exists in all aspects of high school life. It sets and improves the standards in everything from sports to schoolwork. A healthy, friendly competition can have only benefits, but when it becomes too fierce, jealousy (妒忌) can tear friendships apart. Yet, despite all this, without competition, we would be lost.

1.What does the ecological definition mainly explain?

A. How to win the competition.　　 B. What competition exactly is.

C. What the result of competition is.　　 D. How friends compete with each other.

2.According to the writer, what causes the high school students to compete?

A. They know the laws of nature well.　　 B. Friendship is a burden for them.

C. The number of them is too large.　　 D. They are divided into different groups.

3.Which best describes the relationship of friendship and competition?

A. Friendship is always based on competition.

B. Competition is a result of lost friendship.

C. Competition is terribly harmful to friendships.

D. The degree of competition is vital to friendship.

4.What does the author think of “competition”?

A. Competition is certain to happen at school.

B. The result of competition are out of control.

C. Competition becomes fierce in high school.

D. Friendship is not as important as competition at school.

高三英语阅读理解困难题查看答案及解析

Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.

Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.

Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.

Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.

Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?

1. When all humans reach a certain age, ________.

A．they suffer the effects of their diet and lifestyle

B．the organs stop to perform appropriately

C．their cells continue to renew themselves

D．they develop arthritis and Alzheimer’s

2. The purpose of showing the case of alligators is to prove ________.

A．alligators are in danger in the wild because of the threat from man, pollution and other animals

B．it is widely accepted that humans have a fixed lifespan

C．there exists an age gene which may control ageing

D．the age gene damages the body

3.The underlined phrase “live indefinitely” in Paragraph 2 probably mean ________.

A．live for a period of time without a fixed end

B．live without a clear aim

C．live in an uncertain way

D．live without being fully grown

4.It can be inferred from Paragraph 4 that ________.

A．by 2050 we might have most of our worn-out organs replaced with new ones commercially

B．never can the ageing process be avoided

C．livers and kidneys are sure to be grown in laboratories by the year 2020

D．lizards and alligators grow new organs inside their body to replace worn-out ones

5. What is the main topic of this passage?

A．DNA researches show how our cells renew themselves.

B．Anti-oxidants are likely to play an important part in keeping people young.

C．How our biological clock works?

D．Eternal（永恒的） youth: new developments in anti-ageing research.

6.By saying “But do we really want to live forever”, the author may probably mean ________.

A．a future where we are born, we grow to maturity, but we never grow old and die is on its way

B．he is uncertain whether we can live forever

C．it remains to be seen whether immortality is a blessing or a curse

D．immortality is no longer a dream

高三英语阅读理解简单题查看答案及解析

How long can human beings live? Most scientists who study old age think that the human body is ___ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live — if he or she is ___ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ___. They wear out, and as a result, we get old and ___ die.

Even though we can’t live forever, we are living a ___ life than ever before. In 1900, the average American life span(寿命)was only 47 years, but today it is 75 years!

When does old age begin then? Sixty-five may be out-of-date as the ___ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ___ until after age 75.

People are living longer because more people ___ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ___. Now that the chances of dying ____ are much lower, the chances of living long are much higher due to better diets and health care.

On the whole, our population is getting older. The ____ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ____, not disaster. Today, many men and women in their "golden years" are healthy, still active, and young in ____ if not in age.

As our society grows old, we need the ____ of our older citizens. With long lives ahead of them, they need to ____ active and be devoted.

1.A. designed B. selected C. improved D. discovered

2.A. completely B. generally C. apparently D. extremely

3.A. rapidly B. harmlessly C. endlessly D. separately

4.A. eventually B. hopelessly C. automatically D. desperately

5.A. busier B. longer C. richer D. happier

6.A. finishing B. guiding C. waiting D. dividing

7.A. stress B. damage C. decline D. failure

8.A. survive B. enjoy C. remember D. value

9.A. problems B. fears C. worries D. diseases

10.A. poor B. young C. sick D. quiet

11.A. changes B. recovery C. safety D. increases

12.A. dreams B. chances C. strengths D. choices

13.A. mind B. appearance C. voice D. movement

14.A. protection B. suggestions C. contributions D. permission

15.A. sound B. appear C. turn D. stay

高三英语完形填空中等难度题查看答案及解析

How long can human beings live? Most scientists who study old age think that the human body is ______ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live —— if he or she is ______ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ______. They wear out, and as a result, we get old and ______ die.

Even though we can’t live forever, we are living a ______ life than ever before. In 1900, the average American life span (寿命) was only 47 years, but today it is 75 years!

When does old age begin then? Sixty-five may be out-of-date as the ______ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ______ until after age 75.

People are living longer because more people ______ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ______. Now that the chances of dying ______ are much lower, the chances of living long are much higher due to better diets and health care.

On the whole, our population is getting older. The ______ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ______, not disaster, many men and women in their “golden years” are healthy, still active, and young in ______ if not in age.

As the society grows old, we need the ______ of our older citizens. With long lives ahead of them, they need to ______ active and devoted.

1.A. designed B. selected C. improved　 D. discovered

2.A. completelyB. generallyC. apparently　 D. extremely

3.A. rapidlyB. harmlessly C. endlessly　 D. separately

4.A. eventually B. hopelessly C. automatically　 D. desperately

5.A. busier B. longer　 C. richer　 D. happier

6.A. finishingB. guiding　 C. waiting　 D. dividing

7.A. stressB. damage　 C. decline　 D. failure

8.A. survive B. enjoy　 C. remember　 D. value

9.A. problems B. fears　 C. worries　 D. diseases

10.A. poorB. young　 C. sick　 D. quiet

11.A. changes B. recovery C. safety　 D. increases

12.A. dreams B. chances　 C. strengths　 D. choices

13.A. mind B. appearance C. voice　 D. movement

14.A. protection B. suggestions C. contributions　 D. permission

15.A. sound B. appear　 C. turn　 D. stay

高三英语完形填空中等难度题查看答案及解析

The real point of human nature lies in the social bonds that we make through family, friendships, professional associations and local communities. These bonds produce a sense of common purpose and values, in which groups of people seek hard and enjoy together the things that are for the common good: a sound education, a pleasant environment to live in, a healthy population. This is what the heart of the gift economy (经济) is.

In the past, American companies operating in Japan found it difficult to attract Japanese people, even though, compared with Japanese employers, they offered more generous wages, shorter work hours and better promotion chances. But these were traditionally not so important to the employees, who did not think of their services as being ‘bought’. Rather, they felt they were entering into a long-term—“gift exchange” —relationship with their employer, which was of mutual (相互) benefit.

This relationship had many aspects. At its most basic it related the simple exchange of physical gifts. For example, if the employee got married, the company sent a gift. Another company gift which is popular among Japanese employees is the yearly company vacation. On these organized weekends co-workers share dormitories, eat together and visit the same attractions, largely at the company’s expense. For their part, the main gift given by the employees to their company is their hard work and this is why each Japanese employee gives such great attention to accuracy, and quality in their work. Even the simplest tasks are carried out with extraordinary care.

Now, neighborhood groups use online networks to share tools and skills. Someone who needs a long ladder to repair their roof does not need to go out and buy one; they simply put a message up on the neighborhood discussion board and soon a neighbor will offer theirs. Via the Internet, knowledge and advice can be shared on almost everything, from how a nuclear reactor works to how to plan your holiday. The gift economy is going through a booming time.

1.What is the key point of the gift economy?

A.People’s working hard. B.People’s similar social status.

C.Sharing social interests. D.Accepting social bonds.

2.Why did the Japanese show little interest in American companies?

A.The companies offered them low salaries.

B.They were difficult to get a better position.

C.The companies provided shorter vacations.

D.They didn’t want to sell their services.

3.What does the yearly company vacation inspire Japanese employees to do?

A.Contribute themselves to the company.

B.Exchange physical gifts with each other.

C.Spend less money while talking vacations.

D.Organize more effective weekend parties.

4.What can we infer about the gift economy from the last paragraph?

A.It is changing the Internet services. B.It benefits greatly from the Internet.

C.It is better accepted on the Internet. D.It booms the Internet development.

高三英语阅读理解中等难度题查看答案及解析

The Process of Ageing

At the age of twelve years, the human body is at its most vigorous. It has yet to reach its full size and strength, and its owner his or her full intelligence; but at this age the possibility of death is least. Earlier, we were infants and young children, and consequently more vulnerable (易受伤的); later, we shall undergo a progressive loss of our vigorous and resistance which, though vague at first, will finally become so steep that we can live no longer, however well we look after ourselves, and however well society, and our doctors, look after us.

This decline in vigorous with the passing of time is called ageing. It is one of the most unpleasant discoveries which we all make that we must decline in this way, that if we escape wars, accidents and disease we shall eventually “die of old age”, and that this happens at a rate which differs little from person to person, so that there are heavy odds in favor of our dying between the ages of sixty-five and eighty. Some of us will die sooner, a few will live longer — on into a ninth or tenth decade. But the chances are against it, and there is a virtual limit on how long we can hope to remain alive, however lucky and physically strong we are.

Normal people tend to forget this process unless and until they are reminded of it. We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigorous with time, of becoming more likely to die the older we get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. They have also assumed that all animals, and probably other organisms such as trees, or even the universe itself, must in the nature of things “wear out”.

Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; and mechanical systems like a wound (上发条的) watch, or the sun, do in fact ran out of energy in accordance with the second law of thermodynamics (热力学). But these are not similar or equivalent to what happens when man ages. A run-down watch is still a watch and can be rewound. An old watch, by contrast, becomes so worn and unreliable that it eventually is not worth mending. But a watch could never repair itself — it does not consist of living parts, only of metal, which wears away by friction (摩擦). We could, at one time, repair ourselves — well enough, at least, to overcome all but the most instantly fatal illnesses and accidents. Between twelve and eighty years we gradually lose this power, an illness which at twelve would knock us over, at eighty can knock us out, and into our grave. If we could stay as vigorous as we are at twelve, it would take about 700 years for half of us to die, and another 700 for the survivors to be reduced by half again.

1.What can be learned from this passage is that ______.

A. people usually are unhappy when they are reminded of ageing

B. children reach their full intelligence at the age of twelve years

C. people are usually more likely to die at the age of twelve years

D. our first twelve years represent the peak of human development

2.The underlined word “it” in the last sentence of Paragraph Two refers to ______.

A. remaining alive until 65

B. dying before 65 or after 80

C. remaining alive after 80

D. dying between 65 and 80

3.What does “ageing” mean according to the passage?

A. It is a fact that people cannot live any longer.

B. It refers to a gradual loss of vigor and resistance.

C. It is usually a phenomenon of dying at an old age.

D. It is a period when people are easily attacked by illness.

4.What do the examples of the watch refer to in the last paragraph?

A. Normally people are quite familiar with the ageing process.

B. The law of thermodynamics functions in the ageing process.

C. All animals and other organisms undergo the ageing process.

D. Human's ageing process is different from that of mechanisms.

高三英语阅读理解中等难度题查看答案及解析

At the age of twelve years, the human body is at its most vigorous. It has yet to reach its full size and strength, and its owner his or her full intelligence; but at this age the likelihood of death is least. Earlier, we were infants and young children, and consequently more vulnerable; later, we shall undergo a progressive loss of our vigor and resistance which, though imperceptible at first, will finally become so steep that we can live no longer, however well we look after ourselves, and however well society, and our doctors, look after us.

This decline in vigor with the passing of time is called ageing. It is one of the most unpleasant discoveries which we all make that we must decline in this way, that if we escape wars, accidents and disease we shall eventually "die of old age", and that this happens at a rate which differs little from person to person, so that there are heavy odds in favor of our dying between the ages of sixty-five and eighty. Some of us will die sooner, a few will live longer—on into a ninth or tenth decade. But the chances are against it, and there is a virtual limit on how long we can hope to remain alive, however lucky and robust we are.

Normal people tend to forget this process unless and until they are reminded of it. We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigor with time, of becoming more likely to die the older we get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. They have also assumed that all animals, and probably other organisms such as trees, or even the universe itself, must in the nature of things "wear out".

Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; and mechanical systems like a wound watch, or the sun, do in fact an out of energy in accordance with the second law of thermodynamics (热力学) (whether the whole universe does so is a moot point at present). But these are not analogous to what happens when man ages. A run-down watch is still a watch and can be rewound. An old watch, by contrast, becomes so worn and unreliable that it eventually is not worth mending. But a watch could never repair itself—it does not consist of living parts, only of metal, which wears away by friction. We could,at one time, repair ourselves—well enough, at least, to overcome all but the most instantly fatal illnesses and accidents. Between twelve and eighty years we gradually lose this power; an illness which at twelve would knock us over, at eighty can knock us out, and into our grave. If we could stay as vigorous as we are at twelve, it would take about 700 years for half of us to die, and another 700 for the survivors to be reduced by half again.

1.Which of the following statements is INCORRECT?

A.Our first twelve years represent the peak of human development.

B.People usually are unhappy when reminded of ageing.

C.Normally only a few of us can live to the eighties and nineties.

D.People are usually less likely to die at twelve years old.

2.The word "it" in the last sentence of Paragraph Two refers to　　　　　　 .

A.remaining alive until 65.

B.remaining alive after 80.

C.dying before 65 or after 80.

D.dying between 65 and 80.

3.What do the examples of watch show?

A.Normally people are quite familiar with the ageing process.

B.All animals and other organisms undergo the ageing process.

C.The law of thermodynamics functions in the ageing process.

D.Human's ageing process is different from that of mechanisms.

高三英语阅读理解困难题查看答案及解析

At the age of twelve years, the human body is at its most vigorous. It has yet to reach its full size and strength, and its owner his or her full intelligence; but at this age the likelihood of death is least. Earlier, we were infants and young children, and consequently more vulnerable; later, we shall undergo a progressive loss of our vigor and resistance which, though imperceptible at first, will finally become so steep that we can live no longer, however well we look after ourselves, and however well society, and our doctors, look after us.

This decline in vigor with the passing of time is called ageing. It is one of the most unpleasant discoveries which we all make that we must decline in this way, that if we escape wars, accidents and disease we shall eventually "die of old age", and that this happens at a rate which differs little from person to person, so that there are heavy odds in favor of our dying between the ages of sixty-five and eighty. Some of us will die sooner, a few will live longer—on into a ninth or tenth decade. But the chances are against it, and there is a virtual limit on how long we can hope to remain alive, however lucky and robust we are.

Normal people tend to forget this process unless and until they are reminded of it. We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigor with time, of becoming more likely to die the older we get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. They have also assumed that all animals, and probably other organisms such as trees, or even the universe itself, must in the nature of things "wear out".

Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; and mechanical systems like a wound watch, or the sun, do in fact an out of energy in accordance with the second law of thermodynamics (热力学) (whether the whole universe does so is a moot point at present). But these are not analogous to what happens when man ages. A run-down watch is still a watch and can be rewound. An old watch, by contrast, becomes so worn and unreliable that it eventually is not worth mending. But a watch could never repair itself—it does not consist of living parts, only of metal, which wears away by friction. We could,at one time, repair ourselves—well enough, at least, to overcome all but the most instantly fatal illnesses and accidents. Between twelve and eighty years we gradually lose this power; an illness which at twelve would knock us over, at eighty can knock us out, and into our grave. If we could stay as vigorous as we are at twelve, it would take about 700 years for half of us to die, and another 700 for the survivors to be reduced by half again.

1.Which of the following statements is INCORRECT?

A. Our first twelve years represent the peak of human development.

B. People usually are unhappy when reminded of ageing.

C. Normally only a few of us can live to the eighties and nineties.

D. People are usually less likely to die at twelve years old.

2.The word "it" in the last sentence of Paragraph Two refers to　　　　　　 .

A. remaining alive until 65.

B. remaining alive after 80.

C. dying before 65 or after 80.

D. dying between 65 and 80.

3.What do the examples of watch show?

A. Normally people are quite familiar with the ageing process.

B. All animals and other organisms undergo the ageing process.

C. The law of thermodynamics functions in the ageing process.

D. Human's ageing process is different from that of mechanisms.

高三英语阅读理解困难题查看答案及解析