Scientists have discovered a special biological behavior in dolphins（海豚） that could lead to a treatment for late-onset diabetes（晚发的糖尿病） in humans. Studies on dolphins found that healthy dolphins switch into a diabetic-like state overnight when they are not feeding, but return to normal when they eat the following morning.
The extraordinary finding has led scientists to suggest that dolphins have “genetic switch” that allows them to imitate diabetes while they are not feeding for a night, without suffering any ill effect.
If researchers can identify a similar genetic pathway in human, they may be able to develop drugs to effectively switch off diabetes. Some 2.2 million people in Britain have type 2 (or late-onset) diabetes, a figure that is expected to reach 4 million by 2025 as a consequence of rising levels of obesity（肥胖）.
The tissues of people with type 2 diabetes have become resistant to insulin（胰岛素）so they lose the ability to control sugar levels in their blood. The condition can damage the heart, eyes, kidneys（肾脏） and nerves and contribute to 5% of all deaths, according to the World Healthy Organisation.
Dolphins appear to imitate diabetes to keep high levels of blood sugar when food is rare. Like humans, dolphins need some sugar in their blood for their brains to function normally. Venn-Watson’s team analysed 1,000 blood samples（样本） from 52 dolphins while they didn’t eat anything overnight and fed in the morning. At night time, the dolphins’ metabolism（新陈代谢）changed greatly and showed similar characteristics to that seen in people with type 2 diabetes.
“It is our hope that this discovery can lead to new ways to prevent, treat and maybe even cure diabetes in humans,” said Stephanie Venn-Watson, director of clinical research at the National Marine Foundation in San Diego.What’s the main idea of the passage?
| A．Humans get some idea of treating diabetes from dolphins. |
| B．Dolphins can switch into a diabetic-like state overnight. |
| C．Humans can suffer the same disease as dolphins. |
| D．Dolphins should be fed regularly to avoid diabetes. |
The key to applying the finding to curing human diabetes lies in ____________.
| A．producing insulin in a larger amount |
| B．developing drugs from healthy dolphins |
| C．identifying a similar genetic pathway in human |
| D．analysing more blood samples from hungry dolphins |
Which of the following statements is TRUE according to the passage?
| A．Scientists have found a similar genetic switch in humans. |
| B．More British people will suffer type 2 diabetes due to obesity. |
| C．2.2 million people with type 2 diabetes die in Britain every year. |
| D．Dolphins imitate diabetes to avoid a high blood sugar level. |
What will happen to dolphins if not fed for a night according to Venn-Watson?
| A．Their metabolism breaks down. |
| B．They become resistant to insulin. |
| C．Their heart and kidneys are damaged. |
| D．They keep high levels of blood sugar. |
You are watching a film in which two men are having a fight．They hit one another hard．At the start they only fight with their fists．But soon they begin hitting one another over the heads with chairs．And so it goes on until one of the men crashes through a window and falls thirty feet to the ground below．He is dead! Of course he isn’t really dead．With any luck he isn’t even hurt．Why? Because the men who fall out of high windows or jump from fast moving trains, who crash cars of even catching fire, are professionals．They do this for a living．These men are called stuntmen．That is to say, they perform tricks．There are two sides to their work．They actually do most of the things you see on the screen．For example, they fall from a high building．However, they do not fall on to hard ground but on to empty cardboard boxes covered with a mattress．Again, when they hit one another with chairs, the chairs are made of soft wood and when they crash through windows, the glass is made of sugar! But although their work depends on trick of this sort, it also requires a high degree of skill and training．Often a stuntman’s success depends on careful timing．For example, when he is “blown up” in a battle scene, he has to jump out of the way of the explosion just at the right moment.
Naturally stuntmen are well paid for their work, but they lead dangerous lives．They often get seriously injured, and sometimes killed．A Norwegian stuntman, for example, skied over the edge of a cliff a thousand feet high．His parachute failed to open, and he was killed．In spite of all the risks, this is no longer a profession for men only．Men no longer dress up as women when actresses have to perform some dangerous action．For nowadays there are stuntwomen too.
A thief entered the bedroom of the 30th President of the United States, who met him and helped him escape punishment.
The event happened in the early morning hours in one of the first days when Calvin Coolidge came into power, late in August, 1923. He and his family were living in the same third-floor suite(套房) at the Willard Hotel in Washington that had occupied several years before. The former President’s wife was still living in the White House.
Coolidge awoke to see a stranger go through his clothes, remove a wallet and a watch chain.
Coolidge spoke, “ I wish you wouldn’t take that.”
The thief, gaining his voice, said, “ Why?”
“ I don’t mean the watch and chain, only the charm(表坠). Take it near the window and read what is impressed on its back,” the president said.
The thief read, “ Presented to Calvin Coolidge.”
“ Are you President Coolidge?” he asked.
The president answered, “ Yes, and the House of Representatives（众议院）gave me the watch charm. I’m fond of it. It would do you no good. You want money. Let’s talk this over.”
Holding up the wallet, the young man said in a low voice, “ I’ll take this and leave everything else.”
Coolidge, knowing there was 80 dollars in it, persuaded the young man to sit down and talk. He told the President he and his college roommate had overspent during their holiday and did not have enough money to pay their hotel bill.
Coolidge added up the roommate and two rail tickets back to the college. Then he counted out 32 dollars and said it was a loan(借款).
He then told the young man, “ There is a guard in the corridor.” The young man nodded and left through the same window as he had entered.
Six people were traveling in a compartment (包厢) on a train. Five of them were quiet and well behaved(举止文明), but the sixth was a rude young man who was causing a lot of trouble to the other passengers.
At last this young man got out of the station with his two heavy bags. None of the other passengers helped him, but one of them waited until the rude young man was very far away, and then opened the window to him, “ You left something behind in the compartment!” Then he closed the window again.
The young man turned around and hurried back with his two bags. He was very tired when he arrived, but he shouted through the window, “ What did I leave behind?”
As the train began to move again, the passenger who had called him back opened the window and said, “ A very bad impression!” Of the six passengers in the compartment ___.
| A．five of them were rude and badly behaved | B．one of them was rude and badly behaved |
| C．five were always causing trouble on the train | D．only one was quiet and well behaved |
When the rude young man got off the train ___.
| A．he left his two bags behind |
| B．he was thrown out through the window |
| C．the other five passengers didn’t help him |
| D．one of the other passengers opened the window for him |
The passenger who had called him back wanted
| A．to punish him for his bad behavior |
| B．to have a word with him about his behavior |
| C．to help him with his behavior |
| D．to return him the things he had left on the train |
An idea that started in Seattle’s public library has spread throughout America and beyond. The concept is simple: help to build a sense of community in a city by getting everyone to read the same book at the same time.
In addition to encouraging reading as a pursuit (追求) to be enjoyed by all, the program allows strangers to communicate by discussing the book on the bus, as well as promoting reading as an experience to be shared in families and schools. The idea came from Seattle librarian Nancy Pearl who launched (发起）the "If All of Seattle Read the Same Book " project in 1998. Her original program used author visits, study guides and book discussion groups to bring people together with a book, but the idea has since expanded to many other American cities, and even to Hongkong.
In Chicago, the mayor(市长）appeared on television to announce the choice of To Kill a Mockingbird as the first book in the "One Book, One Chicago" program. As a result, reading clubs and neighbourhood groups sprang up around the city. Across the US, stories emerged of parents and children reading to each other at night and strangers chatting away on the bus about plot and character.
The only problem arose in New York , where local readers could not decide on one book to represent the huge and diverse population. This may show that the idea works best in medium-sized cities or large towns, where a greater sense of unity(一致）can be achieved .Or it may show that New Yorkers rather missed the point ,putting all their energy
And passion into the choice of the book rather than discussion about a book itself.
Ultimately, as Nancy points out, the level of success is not measured by how many people read a book, but by how many people are enriched by the process, or have enjoyed speaking to someone with whom they would not otherwise have shared a word.What is the purpose of the project launched by Nancy?
| A．To invite authors to guide readers. |
| B．To encourage people to read and share. |
| C．To involve people in community service. |
| D．To promote the friendship between cities. |
Why was it difficult for New Yorkers to carry out the project?
| A．They had little interest in reading. |
| B．They were too busy to read a book. |
| C．They came from many different backgrounds |
| D．T hey lacked support from the local government |
According to the passage, where would the project be more easily carried out?
| A．In large communities with little sense of unity |
| B．In large cities where libraries are far from home |
| C．In medium-sized cities with a diverse population |
| D．In large towns where agreement can be quickly reached |
The underlined words “shared a word” in Paragraph 5 probably mean
| A．exchanged ideas with each other |
| B．discussed the meaning of a word |
| C．gained life experience |
| D．used the same language |
According to Nancy, the degree of students of the project is judged by________
| A．the careful selection of a proper book |
| B．the growing popularity of the writers |
| C．the number of people who benefit from reading. |
| D．the number of books that each person reads. |
Homestay provides English language students with the opportunity to speak English outside the classroom and the experience of being part of a British home.
What to Expect
The host will provide accommodation and meals. Rooms will be cleaned and bedcovers changed at least once a week. You will be given the house key and the host is there to offer help and advice as well as to take an interest in your physical and mental health.
Accommodation Zones
Homestays are located in London mainly in Zones 2, 3 and 4 of the transport system. Most hosts do not live in the town centre as much of central London is commercial and not residential (居住的). Zones 3 and 4 often offer larger accommodation in a less crowded area. It is very convenient to travel in London by Underground.
Meal Plans Available
* Continental Breakfast
* Breakfast and Dinner
* Breakfast, Packed Lunch and Dinner
It’s important to note that few English families still provide a traditional cooked breakfast. Your accommodation includes Continental Breakfast which normally consists of fruit juice, cereal (谷物类食品), bread and tea or coffee. Cheese, fruit and cold meat are not normally part of a Continental Breakfast in England. Dinners usually consist of meat or fish with vegetables followed by desert, fruit and coffee.
Friends
If you wish to invite a friend over to visit, you must first ask your host’s permission. You have no right to entertain friends in a family home as some families feel it is an invasion of their privacy.
Self-Catering Accommodation in Private Homes
Accommodation on a room-only basis includes shared kitchen and bathroom facilities and often a main living room. This kind of accommodation offers an independent lifestyle and is more suitable for the long-stay student. However, it does not provide the same family atmosphere as an ordinary homestay and may not benefit those who need to practise English at home quite as much. The passage is probably written for ________.
| A．host willing to receive foreign students |
| B．foreigners hoping to build British culture |
| C．travelers planning to visit families in London |
| D．English learners applying to live in English homes |
Which of the following will the host provide?
| A．Room cleaning. | B．Medical care. |
| C．Free transport. | D．Physical training. |
What can be inferred from Paragraph 3?
| A．Zone 4 is more crowded than Zone 2. |
| B．The business centre of London is in Zone 1. |
| C．Hosts dislike traveling to the city centre. |
| D．Accommodation in the city centre is not provided. |
According to the passage, what does continental Breakfast include?
| A．Dessert and coffee | B．Fruit and vegetables. |
| C．bread and fruit juice | D．Cereal and cold meat. |
Why do some people choose self-catering accommodation?
| A．To experience a warmer family atmosphere. |
| B．To enrich their knowledge of English. |
| C．To entertain friends as they like. |
| D．To enjoy much more freedom. |