A purple tomato genetically engineered to contain nutrients more commonly seen in dark berries helped cancer in mice, British researchers said on Sunday. The finding, published in the journal Nature Biotechnology, bolsters the idea that plants can be genetically modified(changed) to make people healthier.
Cancer-prone mice fed the modified fruit lived significantly longer than animals fed a standard diet with and without regular tomatoes, Cathie Martin and colleagues at
the government-funded John Innes Center in Britain reported. “The effect was much bigger than we had expected.” said Martin, a plant biologist.
The study focused on anthocyanins，a type of antioxidant found in berries such as blackberries and blackcurrants that have been shown to lower risk of cancer, heart diseases and some neurological diseases. While an easy way to improve health, many people don’t eat enough of these fruits, the researchers said. Using genes from the snapdragon flower, the researchers discovered they could get the tomatoes to make anthocyanins---- turning the tomato purple in the process.
Mice genetically engineered to develop cancer lived an average of 182 days when they were fed the purple tomatoes, compared to 142 days for animals on the standard diet. “It is greatly encouraging to believe that by changing diet, or specific components in the diet. You can improve health in animals and possibly humans.” Martin said in a telephone interview.
The researchers warned that trials in humans are a long way off and the next step is to investigate( look into) how the antioxidants actually affect the tumors to promote better health. But the findings do support the formal research suggesting that people can significantly improve their health by making simple changes to the daily diet, other researchers said.
“It’s exciting to see new techniques that could potentially make healthy foods even better for us.” said Doctor Lara Bennett, science information office at Cancer Research UK. “ But it is too early to say whether anthocyanins obtained through diet could help to reduce the risk of cancer.” The text mainly tells us _________.
| A．what can prevent people from having cancer. |
| B．Scientists have developed cancer- fighting tomato. |
| C．ways to live much longer have been found by scientists. |
| D．genetically engineered food is good for people’s health. |
In the first paragraph the underlined word “ bolster” probably means _______
| A．change | B．reduce | C．support | D．test |
Which of the following was NOT the result found in the study?
| A．Blackberries and blackcurrants can lower risk of cancer. |
| B．The anthocyanins can make the purple tomatoes grow stronger. |
| C．Genes from snapdragon flowers can be put into common tomatoes. |
| D．Mice fed the modified fruit lived longer than the common ones. |
According to Dr. Lara Bennett, the effects of anthocyanins through diet on human being________
| A．are not certain now. |
| B．have been proved |
| C．are very harmful |
| D．are hard to be tested |
Nowadays people are troubled by the violence that spreads throughout the media. Movies, television and video games are full of gunplay and bloodshed, and one might reasonably ask what’s wrong with a society that presents videos of violence as entertainment.
Viewing large amounts of violent television and video games may well contribute to violent behavior in certain individuals. The trouble comes when researchers downplay uncertainties in their studies or overstate the case for causality（因果关系）. Skeptics were dismayed several years ago when a group of societies including the American Medical Association tried to end the debate by issuing a joint statement: “At this time, well over 1,000 studies… point to a causal connection between media violence and aggressive behavior in some children.”
Freedom-of-speech advocates accused the societies of catering to politicians, and even disputed the number of studies (most were review articles and essays, they said). When Jonathan Freedman, a social psychologist at the University of Toronto, reviewed the literature, he found only 200 or so studies of television-watching and aggression. And when he weeded out “the most doubtful measures of aggression”, only 28% supported a connection.
The critical point here is causality. The alarmists say they have proved that violent media cause aggression. But the assumptions behind their observations need to be examined. When labeling games as violent or non-violent, should a hero eating a ghost really be counted as a violent event? And when experimenters record the time it takes game players to read “aggressive” or “non-aggressive” words from a list, can we be sure what they are actually measuring? The intention of the new Harvard Center on Media and Child Health to collect and standardize studies of media violence in order to compare their methodologies, assumptions and conclusions is an important step in the right direction.
Another appropriate step would be to tone down the criticism until we know more. Several researchers write, speak and testify quite a lot on the threat posed by violence in the media. That is, of course, their privilege. But when doing so, they often come out with statements that the matter has now been settled, drawing criticism from colleagues. In response, the alarmists accuse critics and news reporters of being deceived by the entertainment industry. Such clashes help neither science nor society.Why is there so much violence shown in movies, TV and video games?
| A．Showing violence is thought to be entertaining. |
| B．Something has gone wrong with today’s society |
| C．Many people are fond of gunplay and bloodshed. |
| D．There is a lot of violence in the real world today. |
What is the skeptics’ view of media violence?
| A．Violence on television is fairly accurate reflection of real-world life. |
| B．Most studies exaggerate (夸大) the effect of media violence on the viewers. |
| C．A causal relationship exists between media and real-world violence. |
| D．The influence of media violence on children has been underestimated. |
The author uses the term “alarmists” to refer to those who _________.
| A．use standardized measurements in the studies of media violence |
| B．initiated the debate over the influence of violent media on reality |
| C．insist on a direct link between violent media and aggressive behavior |
| D．use appropriate methodology in examining aggressive behavior |
The underlined phrase “weeded out” in Paragraph 3 most probably means _________.
| A．got rid of things that are not good | B．removed unwanted parts from something |
| C．picked out things that are useful | D．took away unnecessary details of a report |
What does the writer think of the debate concerning the relationship between the media and violence?
| A．He more than agrees with the views held by the alarmists. |
| B．It should come to an end since the matter has now been settled. |
| C．The past studies in this field have proved to be misleading. |
| D．More studies should be conducted before conclusions are drawn. |
Individuality is the particular character, or aggregate (total) of qualities that distinguishes one person or thing from others. Many artists late in the last century were in search of a means to express their individuality. Modern dance was one of the ways some of these people sought to free their creative spirit. At the beginning there was no exacting technique, no foundation from which to build. In later years, trial, error and genius founded the techniques and the principles of the movement. Eventually, innovators (改革者) even drew from what they considered the dread ballet, but first they had to get rid of all that was academic so that the new could be discovered. The beginnings of modern dance were happening before Isadora Duncan, but she was the first person to bring the new dance to general audiences and see it accepted and acclaimed (称赞).
Her search for a natural movement form sent her to nature. She believed movement should be as natural as the swaying of the trees and the rolling waves of the sea, and should be in harmony with the movements of the Earth. Her great contributions are in three areas.
First, she began the expansion of the kinds of movement that could be used in dance. Before Duncan danced, ballet was the only type of dance performed in concert. In the ballet the feet and legs were emphasized, with virtuosity (高超技巧) shown by complex, codified positions and movements. Duncan performed dance by using her body in the freest possible way. Her dance stemmed from her soul and spirit. She was one of the pioneers who broke tradition so others might be able to develop the art.
Her second contribution lies in dance costume. She rejected ballet shoes and stiff costumes. These were replaced with flowing Grecian (希腊式的) tunes, bare feet, and unbound hair. She believed in the natural body being allowed to move freely, and her dress displayed this ideal.
Her third contribution was in the use of music. In her performances she used the symphonies of great masters including Beethoven and Wagner, which was not the usual custom.
She was as exciting and eccentric (怪异) in her personal life as in her dance.According to the passage, what did nature represent to Isadora Duncan?
| A．Something to conquer. | B．A model for movement. |
| C．A place to find peace. | D．A symbol of disorder. |
Compared to those of the ballet, Isadora Duncan’s costumes were less _________.
| A．costly | B．colorful | C．graceful | D．restrictive |
Which of the following is not mentioned as an area of dance that Duncan worked to change?
| A．The stage set. | B．The music. | C．Costumes. | D．Movements. |
We can infer from the passage that the author _________.
| A．appreciates modern dance very much | B．dislikes Isadora Duncan’s dance |
| C．thinks highly of individuality | D．knows a lot about modern arts |
Which of the following would be the best title for the passage?
| A．Artists of the Last Century | B．Evolution of Dance in the 20th Century |
| C．Natural Movement in Dance | D．A Pioneer in Modern Dance |
My newly-rented small apartment was far away from the centre of London and it was becoming essential for me to find a job, so finally I spent a whole morning getting to town and putting my name down to be considered by London Transport for a job on the underground. They were looking for guards, not drivers. This suited me. I couldn’t drive a car but thought that I could probably guard a train, and perhaps continue to write my poems between stations. The writers Keats and Chekhov had been doctors. T.S. Eliot had worked in a bank and Wallace Stevens for an insurance company. I’d be a subway guard. I could see myself being cheerful, useful, a good man in a crisis. Obviously I’d be overqualified but I was willing to forget about that in return for a steady income and travel privileges — those being particularly welcome to someone living a long way from the city centre.
The next day I sat down, with almost a hundred other candidates, for the intelligence test. I must have done all right because after about half an hour’s wait I was sent into another room for a psychological test. This time there were only about fifty candidates. The interviewer sat at a desk. Candidates were signaled forward to occupy the seat opposite him when the previous occupant had been dismissed, after a greater or shorter time. Obviously the long interviews were the more successful ones. Some of the interviews were as short as five minutes. Mine was the only one that lasted a minute and a half.
I can remember the questions now: “Why did you leave your last job?” “Why did you leave your job before that?” “And the one before that?” I can’t recall my answers, except that they were short at first and grew progressively shorter. His closing statement, I thought, revealed (揭示) a lack of sensitivity which helped to explain why as a psychologist, he had risen no higher than the underground railway. “You’ve failed the psychological test and we are unable to offer you a position.”
Failing to get that job was my low point. Or so I thought, believing that the work was easy. Actually, such jobs — being a postman is another one I still desire — demand exactly the sort of elementary yet responsible awareness that the habitual dreamer is least qualified to give. But I was still far short of full self-understanding. I was also short of cash.The writer applied for the job chiefly because _________.
| A．he wanted to work in the centre of London |
| B．he could no longer afford to live without one |
| C．he was not interested in any other available job |
| D．he had received some suitable training |
The writer thought he was overqualified for the job because _________.
| A．he often traveled underground | B．he had written many poems |
| C．he could deal with difficult situations | D．he had worked in a company |
The length of his interview meant that _________.
| A．he was not going to be offered the job |
| B．he had not done well in the intelligence test |
| C．he did not like the interviewer at all |
| D．he had little work experience to talk about |
What does the writer realize now that he did not realize then?
| A．How unpleasant ordinary jobs can be. | B．How difficult it is to be a poet. |
| C．How unsuitable he was for the job. | D．How badly he did in the interview. |
Over 70 percent of the "double single-child couples" in China need help from their parents in taking care of their own kids, according to a recent survey.
"Women of China" magazine and a consulting company carried out a survey recently on young couples of the "single-child" generation, the Morning Post reports. The couples surveyed were around 29 and have been married for three years on average, with university education and monthly income of 4.000 yuan ($531). Among them, 43.5 percent have kids.
Results show that 71.9 percent of the young couples have help from their parents in taking care of their kids.
Grown up as the "single-child", the only child in a family since the family planning policy was adopted in 1979, this generation depends much on their parents.
The parents of the "single-child" generation focused more on their children's physical well-being rather than their attitudes and values, according to some psychologists.
The research also found that the "double single-child couples" follow a rather traditional value system.
Survey shows that 27.5 percent of them got married after dating for one to two years, 25.2 percent two to five years, and 20 percent didn't tie the knot until dating for five years. Also, 30 percent of the couples were schoolmates, while 43.8 percent were introduced by someone.
Since their marriage are based on enduring relationships, 65.2 percent of the husbands and 62.9 percent of the wives think that compromise(妥协)and tolerance(宽容)are necessary in their marriage. Meanwhile, 21.7 percent of the husbands and 37.1 percent of the wives support the idea that happiness is the key standard for a marriage.
21.The best title for the passage should be_______.
A. Mom and Dad, Take Care of My Kid PleaseB. Double Single-child Couples
C. The Problem of the Single Child D. A Recent Survey By Woman of China"
22.Which of the following is NOT supported by the passage?
A. The majority of the "double single-child couples" in China depend much on their parents.
B. The parents of the “single-child” generation more care about their study and education.
C. One-fifth of the couples surveyed didn't get married until dating for five years.
D. All the couples surveyed have university education and 30 percent of them were schoolmates
23.Which of the following descriptions about “double single-child couples” is True ?
A. They are single child in either family and independent of their parents
B. They are single child in either family and they are dependent on their parents
C. They have at least two children and can afford to support themselves
D. They, who were introduced by someone, follow a rather traditional value system
24. The traditional value system mentioned in the passage refers that_____.
A. parents are concerned about their children’s physical life as well as the spiritual life
B. most couples were introduced by someone and made dating for a long time
C. once begun, double single-child couples’ marriage will last forever
D. the couples think that compromise and tolerance are necessary in their marriage.
25. According to the passage, we can learn that ______ is necessary in marriage.
A. wealth B. health C. understanding D. education
Some say everyday miracles(奇迹) are predestined(注定的)----the right time for the appointed meeting. And it can happen anywhere.
In 2001, 11-year-old Kevin Stephan was a bat boy for his younger brother's Little League team in Lancaster, New York. It was an early evening in late July. Kevin was standing on the grass away from the plate, where another youngster was warming up for the next game. Swinging his bat back and forth, giving it all the power an elementary school kid could give. The boy brought the bat back hard and hit Kevin in the chest. His heart stopped.
When Kevin fell to the ground, the mother of one of the players rushed out of the stands to his aid. Penny Brown hadn't planned to be there that day, but at the last minute, her shift(换班)at the hospital had been changed to see her son’s performance. She was given the night off. Penny bent over the senseless boy, his face already starting to turn blue, and giving CPR, breathing into his mouth and giving chest compressions. And he revived in the end.
After his recovery, he became a volunteer junior firefighter, learning some of the emergency first-aid techniques that had saved his life. He studied hard in school and was saving money for college by working as a dishwasher in a local restaurant in his spare time.
Kevin, now 18, was working in the kitchen when he heard people screaming, customers in confusion, employees rushing toward a table. He hurried into the main room and saw a woman there, her face turning blue, her hands at her throat. She was choking.
Quickly Kevin stepped behind her, wrapped his arms around her and clasped his hands. Then, using skills he'd first learned in Scouts. The food that was trapped in the woman's throat was freed. The color began to return to her face.
"The food was stuck. I couldn't breathe," she said. She thought she was dying. "I was very frightened."
Who was the woman?
Penny Brown.
11. The author wrote the passage to show us that_______.
A. miracles are predestined and they can happen anywhere
B. whoever helps you in trouble will get a reward one day
C. God will help those who give others a helping hand
D. miracles won’t come without any difficulty sometimes
12. Which of the following statements is True of Kevin Stephan?
A. He was hit on the face by a boy and almost lost his life
B. He was a volunteer junior firefighter, teaching the players first-aid skills
C. He worked part-time in a local restaurant to save money for college
D. He saved Penny Brown though he didn’t really know how to deal with food choke
13. Why did Penny Brown change her shift and was given the night off that night?
A. She was invited to give the players directions
B. She volunteered to give medical services
C. She was a little worried about his son’s safety
D. She came to watch her son’s game and cheered him
14. The underlined word “revived”(paragraph3) most likely means______.
A. came back to life B. became worse C. failed D. moved
15. When Kevin knew the woman was Penny Brown, probably he first felt _____.
A. happy B. surprised C. sad D. worried