We’re programmed to want more food, ________w...

We’re programmed to want more food, ________we won’t have a chance to eat tomorrow．

A． even though    B． just in case       C． in which way    D． in which case

高三英语单项填空中等难度题查看答案及解析

It never will rain roses. __________ we want to have more roses. we must plant trees.

A. When　　　　　　　 B. Unless　　　　　　　 C. Until　　　　　　　　 D. While

高三英语单项填空简单题查看答案及解析

We　　 have bought so much food now that Suzie won’t be with us for dinner.

A. may not　　　　　　　　　 　　　　　　　　　 B.　 mustn’t　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 C． can’t　　　　　　　　　 　　　　　　　　　 　　　　　　　　　 D． needn’t

高三英语单项填空中等难度题查看答案及解析

(2012·江西高考)We ________ have bought so much food now that Suzie won't be with us for dinner.

A．may not　 　 　　　　　　　　　　　　　 B．needn't

C．can't　 　　　　　　　　　　　　　　　　 D．mustn't

高三英语单项填空中等难度题查看答案及解析

If ________ guests we have, we would need ___ food.

高三英语单项填空中等难度题查看答案及解析

We won’t know how much food to buy until we decide how many people ________.

A. were coming     B. are coming         C. have been coming  D. had come

高三英语单项填空困难题查看答案及解析

The preschool children who watch TV programs with violent scenes are more likely to have sleep problems than those who watched programs 　　　　 for the age.

A. accurate　             B. fantastic　　         C. delicate　　　　         D. appropriate

高三英语单项填空中等难度题查看答案及解析

We will do everything we can to _____ him to stay, but if he wants to leave we won’t stand in his way.

A．convince          B．frighten           C．remind           D．confuse

高三英语单项填空中等难度题查看答案及解析

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

More often than not, we think the taste of food is largely to do with the way it's cooked. However, according to a new study published in the Journal of Consumer Research, sitting and standing also affect the taste.

Lead author Dipayan Biswas, a professor from the University of South Florida in the US, looked specifically at how the vestibular（前庭的）sense, which is responsible for balance, posture（姿势）and location awareness, works with our sense of taste.

He found that standing for even a few minutes causes people to feel physical stress. Gravity pushes blood to the lower parts of the body, causing the heart to work harder. This increases the heart rate and leads to increased stress hormones（荷尔蒙）.All of these reduce sensory sensitivity, which affects taste. Our mouths fail to taste or feel temperature as well when this happens. When people experience discomfort, foods that normally taste good aren't as pleasing, says Science Daily.

Biswas gave 350 participants each a piece of biscuit and had them rate its tastiness. Those who stood while eating gave it a lower rating than those who sat in comfortable chairs. Next, Biswas and his team gave participants bite-sized cookies from a well-known local restaurant. These cookies are widely considered to be very tasty. Those who sat down to eat rated them highly. However, when the baker added extra salt, the results were opposite. Participants who stood up to eat the cookies didn't notice that the cookies tasted saltier, while those who were seated found the cookies weren't so tasty.

So if you really want to enjoy your meal, try to find yourself a comfortable seat. But if you're trying to lose weight, eating while standing could be helpful because people tend to eat less while standing.

1.What's the common belief about the taste of the food in the text?

A.It seems associated with people's preferences.

B.It is largely to do with how people sit or stand.

C.It has little to do with the way people eat food.

D.It is mainly determined by how food is cooked.

2.Why do people who stand less enjoy food?

A.Their mental health declines. B.Their hearts work more slowly.

C.They are less sensitive to taste. D.They have no sensory sensitivity.

3.How did Dipayan Biswas get his conclusions in paragraph 4?

A.By classifying examples. B.By doing experiments.

C.By studying previous theories. D.By analyzing abundant data.

4.What's the best title for the text?

A.Sitting Has Various Effects on Eating

B.Posture Affects How People Enjoy Food

C.Eating While Standing Helps to Lose Weight

D.Sitting and Standing Are Common Postures

高三英语阅读理解中等难度题查看答案及解析