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Eating 40 percent less food could extend a person`s life by 20 years, according to scientists.
Researchers at the Institute of Health Ageing at University College London are developing a treatment that they hope will fight the `disease` of getting older.
They are looking into how genetics（遗传学） and lifestyle can affect ageing and add years, possibly decades, to a person`s life.
Age-related diseases such as cardiovascular disease, cancer and neuro degeneration can also be treated, it is claimed.
They want to find out how the life of a rat can be increased by up to 30 percent simply by reducing its food intake.
Researcher Dr. Piper told the Independent : `If you reduce the diet of a rat by 40 percent it will live for 20 or 30 percent longer. So we would be talking 20 years of human life. This has shown on all sorts of animals, even Labradors(a kind of dog).`The scientists are also studying fruit flies, which share 60 percent of human genes and age in a similar manner, and mice.
They have already made the healthy lifespan(寿命) longer in both flies and mice by using drug treatments and a balanced diet. It is hoped that this combination will also work to extend(延长) human life. Dr. Piper said: `If we discover the genes involved with ageing, we should be able to delay ageing itself. This is what we`ve found.`
He added that the field of research into extending life is only a decade old, so remains `in theory . It is their special approach to treating all age-related diseases caused by the `disease` of ageing itself that sets their research apart.The author writes this text in order to_____.
| A．encourage people to eat as little as possible |
| B．tell people how harmful food is to their health |
| C．introduce an on-going research on delaying ageing |
| D．show how similar mice and humans are to each other |
How can people live longer according to the text?
| A．Exercise regularly. |
| B．Reduce their diet properly. |
| C．Vary their lifestyles constantly. |
| D．Change their genes completely. |
What does the underlined sentence in the last paragraph suggest?
| A．The research is effort-taking. |
| B．The result of the research is reliable. |
| C．The research has been done for a long time. |
| D．There’s a long way to go to put the theory into practice. |
We can begin our discussion of “population as a global issue” with what most person mean when they discuss “ the population problem”: too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute. It was quite right to employ a similar matter that linked demographic(人口统计学）growth to “ a long, thin power fuse that burns steadily from time to time until it finally reaches the limit, and explodes”.
To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history. We find that population have been really stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. For most of human history, it was seldom the case that one in ten persons would live past forty, where infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birth rates. Thus, the population problem throughout most of history was how to prevent extinction of the human race.
This pattern is important to know. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high rate of death.
Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8000B.C. till approximately 1650 A.D. And a period of rapid growth since 1650. In the first period of some 9,600 years, the population increased form some 8 million to 500 million in 1650. Between 1650 and the present, the population has increased from 500 million to more than 4 billion. And it is estimated that by the year 2020 there will be 8 billion people throughout the world. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000B.C. and 1650, an average of only 50,000 persons was being added annually to the world’s population each year. At present, this number is added very six hours. The increase is about 80,000,000 persons annually.According to the passage, “population as a global issue” ____.
| A．is quite unlike the population problem and thus doesn’t need our concern |
| B．focuses on tracking down the reason of rapid population growth |
| C．deals with the same problem aroused by the population problem |
| D．will manage the population growth problem from global perspectives |
It can be inferred from the example of a power fuse that _____.
| A．too much population will one day lead to the doom of human beings |
| B．the trend of population growth will keep unsteady until the destruction of Earth |
| C．demographic growth will follow a certain pattern of ups and downs |
| D．it is likely in the near future that population will reduce gradually |
What leads to a stable growth of population for most of human history?
| A．Species competition | B．Low fertility | C．Tribal fights | D．High rate of death |
The reason for a rapid growth of population lies in the fact that ______.
| A．people are permitted to have more children |
| B．people can live better than before |
| C．newborn babies die less than before |
| D．we have found the secret of longevity |
How many people are born every six hours at present, according to the author?
| A．Eighty million. | B．Eight thousand |
| C．Fifty thousand | D．Five million |
On the high-speed train Avignon to Paris, my husband and I landed in the only remaining seats on the train, in the middle of a car, directly opposite a Frenchwoman of middle years. It was an extremely uncomfortable arrangement to be looking straight into the eyes of a stranger. My husband and I pulled out books. The woman produced a large makeup case and made up her face. Except for a lunch break, she continued this activity for the entire three-hour trip. Every once in a while she surveyed the car with a bright-eyed glance, but never once did she catch my eye. My husband and I could have been a blanket wall.
I was amused, but some people would have felt uncomfortable , even repulsed(厌恶的）.there is something about making up in public that calls up strong emotional reactions. Partly it’s a question of hygiene. And it’s a matter of degree. Making up --- a private act--- has a way of neglecting the presence of others. I was once seated at a party with a model-actress who immediately waved a silly brush and began dusting her face at the table, demonstrating that while she was next to me, she was not with me.
In fact, I am generally prohibited from making up in public, except when I am in the company of cosmetics moment. In a gathering more professional than social, I would do so.
Kathy Peiss, a history professor at the University of Massachusetts in Amherst says that nose-powdering in the office was an occasion for outrage in 1920’s and 30’s. Deploring the practice as a waste of company time, trade journals advises managers to discourage it among workers. Peiss theorizes that it was female’s making up in what has been an all-male field that disturb some gentlemen.
Peiss tells me that after the 30’s , pulling out a make-up case was no longer an issue. It became an accepted practice. I asked if she feels free to apply lipstick at a professional lunch herself. Sounding mildly shocked, she says she would save that for the privacy of her car afterward. Why? Because it would be “a gesture of inappropriate feminity(女性化）.” One guess is that most professional women feel this way. There is evidence of the popularity of the new lipsticks that remain in place all day without retouching.According to the author, “My husband and I could have been a blanket wall.” (Line 6, Para.1) most probably means “________”.
| A．We were treated with an expressionless face. |
| B．We looked at the French woman expressionlessly |
| C．We used books as a wall to avoid the woman’s eyes |
| D．We were of no existence in the French woman’s eyes |
In the author’s opinion, she _______.
| A．allows public making up on certain occasions |
| B．feels comfortable when making up in public |
| C．only makes up on social occasions |
| D．makes up before any professional gatherings |
According to Peiss, nose powdering in an office was criticized mainly for the reason that ____.
| A．normal office work was disturbed |
| B．it discouraged women’s interest in career |
| C．make dominance was emphasized there |
| D．it distracted make workers’ focus on work |
Why do most professional women give up using lipsticks in public?
| A．Because they are worried about being looked down upon |
| B．Because it emphasizes their female features in wrong situations |
| C．Because it implies women’s disadvantages in academic fields |
| D．Because they are ashamed to be seen making up in front of males/ |
It can be inferred that in a highly open society, the differences between men and women ______.
| A．have attracted little attention |
| B．hinder the social development |
| C．are attractive topics in talk shows |
| D．still call for great concern |
How can we measure animals’ emotions? A new study of animal’s emotions suggests that, as in humans, emotions can tell animals about how dangerous their world is, and guide the choices that they make. The article of the study by Bristol University’s professor Mike Mendl was published online.
An animal living in an environment where it is often threatened by predators(捕食者）will develop a negative emotion or “mood”, such as anxiety. However, one in an environment with plenty of opportunities to get resources for survival will be in a more positive mood state.
The researchers say that these emotional states not only show the animal’s experiences, but also help it decide how to make choices, especially in unclear situations. This could have good or bad results. An animal in a negative mood state will make a safety-first with a “pessimistic” response to an unclear event. For example, it considers a noise in the grass as a signal of the predator. At the same time, an animal in a positive mood state will benefit from a more “optimistic” response. It considers the noise as a signal of prey(猎物）.
Professor Mike Mendl, head of the Animal Welfare and Behavior Research Group at Bristol University’s School of Clinical Veterinary Science said, “ We can use “optimistic” or “pessimistic”decision-making as a symbol of an animal’s emotional state. Recent studies by our group and others suggest that this is a meritorious new approach to studying a variety of animal species.”
“Public interest in animal welfare remains high, with widespread concern about the way in which animals are treated, used and included in society. To understand how animals should be treated, we need to better understand their emotional lives,” Mike Mendl said. The researchers believe Mike Mendl’s study can help them to better understand and assess an animal’s emotions.When an animal is in a negative mood state, _______.
| A．its response to an unclear event is pessimistic |
| B．it will pay little attention to an unclear event |
| C．it is easy for it to make right decisions |
| D．it has more opportunities to get food |
The underlined word “meritorious” in Paragraph 4 can be replaced by “_______”.
| A．valuable | B．useless | C．fashionable | D．hopeless |
We can infer from the passage that ________.
| A．the animals with positive emotions live longer |
| B．there is no way to assess an animal’s emotions |
| C．few people care about animal welfare nowadays |
| D．the environment can influence animal’s emotions |
Mike Mendl advised people to better understand animal’s emotions in order to _____.
| A．tell people to build more protected areas for animals |
| B．explain animals should be regarded as people’s friends |
| C．raise people’s interest in studying animals |
| D．make people know how to treat animals properly |
What would be the best title for the passage?
| A．Different kinds of Animals’ Emotions |
| B．Emotions Helps Animals to Make Choice |
| C．The Living Environment of Wild Animals |
| D．The Best Way to Measure Animals’ Emotions |
The Winners Club is a bank account specially designed for teenagers. It has been made to help you better manage your money. The Winners Club is a transaction account（交易账户）where you receive a key-card so you can get to your money 24/7—that’s 24 hours a day, 7 days a week!
It’s a club with impressive features for teenagers：
No account keeping fees！
You ’re no millionaire so we don’t expect you to pay large fees. In fact, there are no account keeping or transaction fees!
Excellent interest rates!
You want your money to grow. The Winners Club has a good rate of interest which gets even better if you make at least two deposits（储蓄）without taking them out in a month.
Convenient!
Teenagers are busy—we get that. You may never need to come to a bank at all. With the Winners Club you can choose to use handy tellers and to bank from home using the phone and the Internet…You can have money directly deposited into your Winners Club account. This could be your pocket money or your pay from your part-time job!
Magazine included!
Along with your regular report, you will receive a FREE magazine full of good ideas to make even more of your money. There are also fantastic offers and competitions only for Winners Club members.
The Winners Club is a great choice for teenagers. And it is so easy to join. Simply fill in an application form. You will have to get permission from your parent or guardian (so we can organize that cool key-card) but it is easy. We can’t wait to hear from you. It’s the best way to choose to be a winner!Which of the following is TRUE about the Winners Club?
| A．Special gifts are ready for parents. |
| B．The bank opens only on work days. |
| C．Services are convenient for its members. |
| D．Fees are necessary for the account keeping. |
The Winners Club provides magazines which_______.
| A．encourage spending |
| B．are free to all teenagers |
| C．are full of adventure stories. |
| D．help to make more of your money |
If you want to be a member of the Club, you must _________.
| A．be an Internet user | B．be permitted by your parent |
| C．have a lot of money | D．be in your twenties |
What is the purpose of this text?
| A．To set up a club. | B．To provide part-time jobs. |
| C．To organize key-cards. | D．To introduce a new banking service. |
I was waiting for a phone call from my agent. He had left a message the night before, telling me that my show was to be canceled. I called him several times, but each time his secretary told me that he was in a meeting and that he would call me later. So I waited and waited, but there was still no call. Three hours passing by, I became more and more impatient. I was certain that my agent didn’t care about my work, and he didn't care about me. I was overcome with that thought. I started to shout at the phone, "Let me wait, will you? Who do you think you are?"
At that time I didn't realize my wife was looking on. Without showing her surprise, she rushed in, seized the phone, tore off the wires, and shouted at the phone, "Yeah! Who do you think you are? Bad telephone! Bad telephone!" And she swept it into the wastebasket.
I stood watching her, speechless. What on earth?
She stepped to the doorway and shouted at the rest of the house, "Now hear this! All objects in this room—if you do anything to upset my husband, out you go!"
Then she turned to me, kissed me, and said calmly, "Honey, you just have to learn how to take control." With that, she left the room.
After watching a crazy woman rushing in and out, shouting at everything in sight, I noticed that something in my mood had changed. I was laughing. How could I have trouble with that phone? Her antics helped me realize I had been driven crazy by small things. Twenty minutes later my agent did call. I was able to listen to him and talk to him calmly.Why did the author shout at the telephone?
| A．He was mad at the telephone. |
| B．He was angry with his agent. |
| C．He was anxious about his wife. |
| D．He was impatient with the secretary. |
What did the author’s wife do after she heard his shouting?
| A．She said nothing. | B．She shouted at him. |
| C．She called the agent. | D．She threw the phone away. |
What made the author laugh?
| A．His own crazy behavior. | B．His wife’s suggestions. |
| C．His changeable feeling. | D．His wife’s sweet kiss. |
What does the underlined word “ antics” refer to?
| A．Smart words | B．Unusual actions. | C．Surprising looks. | D．Anxious feelings |
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