If you have ever been left wondering why your emails are riddled(充斥着) with grammatical errors, or why you can never quite find the right phrase, it may be because you are typing with both hands.

    Our vocabulary becomes richer and our writing style becomes more fluent when we type using just one hand, scientists have found. "Typing can be too fluent or too fast, and it can actually weaken the writing process," said Srdan Medimorec, the lead author of the study conducted at the department of psychology at the University of Waterloo, Canada. "It seems that what we write is a product of the interaction(互动) between our thoughts and the tools we use to express them."

    Using text-analysis software, researchers asked 103 university students to write essays under different conditions, using one hand to type and using both hands to type. The software was used to analyze(分析) elements of the essays, such as range of vocabulary, sentence complexity and the cohesion(衔接) of the writing.

    Researchers found that participants' vocabulary became more advanced when they typed with one hand rather than two. The research team said that by slowing our writing down, typing one-handed allows more time for an internal (内在的) word search, resulting in a larger variety of words.

    In contrast, fast typists might just write the first word that comes to mind. However, it is important not to slow typing down too much. Those who typed essays one-handed in the current study slowed down to about the speed of handwriting.

    This is the first study to show that changing people's typing can make their writing get better. The researchers suggested that the speed of writing could affect writing quality regardless of the tools used, whether they are computers, or pen and paper, although further research would be required to prove that idea.

    Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span.

     “I think we are knocking at the door of immortality(永生),” said Michael Zey, a Montclair State University business professor and author of two books on the future. “I think by 2075 we will see it and that' s a conservative estimate(保守的估计).”

    At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in Newark said advances in using genes as well as nanotechnology(纳米技术) make it likely that humans will live in the future beyond what has been possible in the past. “There is a great effort so that people can live from 120 to 180 years,” he said. “Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years.”

    However, many scientists who specialize in aging are doubtful about it and say the human body is just not designed to last past about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.

    Scientists also differ on what kind of life the super aged might live. “It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life?” said Leonard Poon, director of the University of Georgia Gerontology Centre. “At present people who could get to that point are not in good health at all.”

    It was very late and everyone had left the cafe except an old man who sat in the shadow the leaves of the tree made against the electric light. In the day time the street was dusty, but at night the dew settled the dust and the old man liked to sit late because he was deaf and now at night it was quiet and he felt the difference. The two waiters inside the cafe knew that the old man was a little drunk, and while he was a good client they knew that if he became too drunk he would leave without paying, so they kept watch on him.

     “Last week he tried to commit suicide,” one waiter said. “Why?” “He was in despair.” “What about?” “Nothing.” “How do you know it was nothing?” “He has plenty of money.”

    They sat together at a table that was close against the wall near the door of the cafe and looked at the terrace where the tables were all empty except where the old man sat in the shadow of the leaves of the tree that moved slightly in the wind. A girl and a soldier went by in the street. The street light shone on the brass number on his collar. The girl wore no head covering and hurried beside him.

     “The guard will pick him up,” one waiter said. “What does it matter if he gets what he's after?” “He had better get off the street now. The guard will get him. They went by five minutes ago.”

    The old man sitting in the shadow rapped on his saucer with his glass. The younger waiter went over to him.

     “What do you want?” The old man looked at him. “Another brandy,” he said.

     “You'll be drunk,” the waiter said. The old man looked at him. The waiter went away.

     “He'll stay all night,” he said to his colleague. “I'm sleepy now. I never get into bed before three o'clock. He should have killed himself last week.”

    The waiter took the brandy bottle and another saucer from the counter inside the cafe and marched out to the old man's table. He put down the saucer and poured the glass full of brandy.

     “You should have killed yourself last week,” he said to the deaf man. The old man motioned with his finger. “A little more,” he said. The waiter poured on into the glass so that the brandy slopped over and ran down the stem into the top saucer of the pile. “Thank you,” the old man said. The waiter took the bottle back inside the cafe.He sat down at the table with his colleague again.

     “He's drunk now,” he said. “He's drunk every night.” “What did he want to kill himself for?” “How should I know.” “How did he do it?” “He hung himself with a rope.” “Who cut him down?” “His niece.” “Why did they do it?” “Fear for his soul.” “How much money has he got?” “He's got plenty.” “He must be eighty years old.” “Anyway I should say he was eighty.” “I wish he would go home.I never get to bed before three o'clock. What kind of hour is that to go to bed?” “He stays up because he likes it.” “He's lonely. I'm not lonely. I have a wife waiting in bed for me.” “He had a wife once too.” “A wife would be no good to him now.” “You can't tell. He might be better with a wife.” “His niece looks after him.You said she cut him down.” “I know.” “I wouldn't want to be that old.An old man is a nasty thing.” “Not always.This old man is clean.He drinks without spilling.Even now, drunk.Look at him.” “I don't want to look at him.I wish he would go home.He has no regard for those who must work.”

    The old man looked from his glass across the square, then over at the waiters.

     “Another brandy,” he said, pointing to his glass.The waiter who was in a hurry came over.

     “Finished,” he said, speaking with that omission of syntax stupid people employ when talking to drunken people or foreigners. “No more tonight. Close now.”

     “Another,” said the old man.

     “No. Finished.” The waiter wiped the edge of the table with a towel and shook his head.

    The old man stood up, slowly counted the saucers, took a leather coin purse from his pocket and paid for the drinks, leaving half a peseta tip. The waiter watched him go down the street, a very old man walking unsteadily but with dignity.

     “Why didn't you let him stay and drink?” the unhurried waiter asked. They were putting up the shutters. “It is not half past two.” “I want to go home to bed.” “What is an hour?” “More to me than to him.” “An hour is the same.” “You talk like an old man yourself.He can buy a bottle and drink at home.” “It's not the same.” “No, it is not,” agreed the waiter with a wife. He did not wish to be unjust. He was only in a hurry. “And you? You have no fear of going home before your usual hour?” “Are you trying to insult me?” “No, hombre, only to make a joke.”

     “No,” the waiter who was in a hurry said, rising from pulling down the metal shutters.“I have confidence.I am all confidence.” “You have youth, confidence, and a job,” the older waiter said.“You have everything.” “And what do you lack?” “Everything but work.” “You have everything I have.” “No.I have never had confidence and I am not young.” “Come on. Stop talking nonsense and lock up.” “I am of those who like to stay late at the cafe,” the older waiter said.“With all those who do not want to go to bed.With all those who need a light for the night.” “I want to go home and into bed.” “We are of two different kinds,” the older waiter said.He was now dressed to go home.“It is not only a question of youth and confidence although those things are very beautiful. Each night I am reluctant to close up because there may be someone who needs the cafe.” “Hombre, there are bodegas open all night long.” “You do not understand.This is a clean and pleasant cafe.It is well lighted. The light is very good and also, now, there are shadows of the leaves.”

“Good night,” said the younger waiter.

     “Good night,” the other said. Turning off the electric light he continued the conversation with himself. It was the light of course but it is necessary that the place be clean and pleasant. You do not want music.Certainly you do not want music.Nor can you stand before a bar with dignity although that is all that is provided for these hours. What did he fear? It was not a fear or dread. It was a nothing that he knew too well. It was all a nothing and a man was a nothing too. It was only that and light was all it needed and a certain cleanness and order. Some lived in it and never felt it but he knew it all was nada y pues nada y nada y pues nada.

    He smiled and stood before a bar with a shining steam pressure coffee machine.

     “What's yours?” asked the barman.

     “Nada.” “Otro loco mas,” said the barman and turned away.

     “A little cup,” said the waiter.

    The barman poured it for him.

     “The light is very bright and pleasant but the bar is unpolished,” the waiter said.

    The barman looked at him but did not answer.It was too late at night for conversation.

     “You want another copita?” the barman asked.

     “No, thank you,” said the waiter and went out.He disliked bars and bodegas.A clean, well-lighted cafe was a very different thing.Now, without thinking further, he would go home to his room.He would lie in the bed and finally, with daylight, he would go to sleep.After all, he said to himself, it's probably only insomnia. Many must have it.

    Now is the best time for Hong Kong shopping lovers, as most shops and markets are having their seasonal sales. With the same amount of money, you can find different kinds of goods in this city. Women, young and old, rarely resist the attraction of this shopping paradise(乐园) at this time of year. Lovers will surely have an exciting Christmas and New year's Eve celebrations at the Time Square or in the western styled bars. Spending your holiday in Hong Kong will be easy too, as several packing tours are available from CZL Travel Service, with four-day tours for less than 15,000 yuan.

    Tour package 1(3,200 yuan): a 4-day-tour including three nights' accommodation(住宿), science helicopter flight, night ferry tour of Victoria Harbor and shuttle bus to the park to view the city at night.

    Tour package 2(1,880yuan): a 4-day-shopping tour including three nights' accommodation, tour to Golden Beach and the Vex work Museum, shuttle bus to the Peak and shopping opportunities.

    Tour package 3 (1,480 yuan): a 4-day-DIY-tour including three nights' accommodation in a four-star hotel and total freedom to do what you want, when you went.

    As early as 2005, there were a number of new stories about dog cloning(克隆) and cat cloning. Animal cloning had been old news for nearly a decade by then, with the revolutionary (革命的) cloning of Dolly the sheep in Scotland.

    However, Snuppy was the first pet, a dog, to be cloned. Since the cloning of Snuppy, there has been some very successful cloning of pets and other animals. Lou Hawthorne started BioArts while cloning his beloved mixed-breed dog Missy. Hawthorne was very pleased with the results of the cloning, producing three successful clones that were very alike to the original in character and behavior. In January, 2009, a Florida couple, Ed and Nina Otto, announced that they had paid to have their dog cloned by BioArts.

    All new technology is overpriced. For example, personal computers were not very affordable at first. Only after the producing process was improved was it possible for every family to have a computer. How much room there will be for organizations to reduce the price point on pet cloning without broad demand is of course questionable.

    There are many great dogs and cats that can be found at the local dog pound (野狗收容所) or are given away for "free to good homes" in classified ads (分类广告). However, there is no limit to the value people place on a beloved pet. The Ottos are a good example of that. If people can buy a dog or cat with predictable behavior and characteristics, there is value in that. There is a predictable market here, though it may always be limited in size.

    While pet cloning has not taken off as some hoped, it's clear that it will become a bigger market in the future and it will be increasingly possible for people to try this out. With the inevitable (不可避免的) success that cloned pet owners will have, the practice will become more widely accepted and it seems inevitable that there is a future for cloned dogs and cats.

    It was a quiet village in which there was a military camp(军营). It was far from the towns and cities and there were some high mountains around. Of course it was a good place for training the new soldiers. But it was difficult for the young men to go outside. Mr White, an officer of forty, was strict with them and he hardly let them leave the camp.

    Once Mr White was ill in bed. He couldn't work and a young officer, Mr Hunt, began to train the new soldiers instead of him. He knew the young men well and let nine soldiers go to the nearest town to have a holiday. But night fell and none came back to the camp. He was worried about it and stood at the gate. It was five to twelve when Mr Hunt decided to go to the town and see what was happening to the young men. He started the car quickly and set off. At that moment the nine soldiers came back. It seemed they drank wine. Of course they found the officer was angry.

    "I'm sorry, sir," said the first soldier. "I left the town on time. But something was wrong with my bus on my way here. I had to buy a horse and made it run fast. Bad luck! It died and I had to run back."

    And the other seven soldiers said they were late for the same reasons. It was the last soldier's turn. He said, "I'm sorry, sir. I got on a bus on time, but……"

    Having heard this, the officer became even angrier and stopped him at once. He called out, "If you say something was wrong with your bus, I'll punish you at once!"

    "No, no, sir," said the young man. "My bus was all right, but the dead horses were in its way!"