The arm bones of women who lived 7-000 years ago show a surprising level of strength-even higher than today's professional athletes. That's according to a first-ever study comparing prehistoric(史前的)bones to those of living people. The finding suggests a revision of history — the everyday lives of prehistoric women were filled with hard labor, rather than just sitting at home doing lighter tasks while the men struggled and fought for life.

    “Before the study, there are no clear records describing how our ancient ancestors lived. It can be easy to forget that bone is a living tissue, one that responds to the difficulties we put our bodies through,” said lead author Alison Macintosh. “Physical force and muscle activity both put pressure on the bone. The bone reacts by changing in shape, thickness and other aspects over time. ”

    Previous studies only compared female bones to contemporary male bones, the researchers said — and that's a problem, because the response of male bones to stress and change is much bigger than that of women. For instance, as humans moved from a hunter-gatherer lifestyle constantly on the move to a more settled agrarian (农耕的)one, changes can be observed in the structure of the shinbone (胫骨) — and these changes were much more evident in men.

    However, a comparison of the bones of prehistoric women to the bonos of living female athletes can help us work out a more accurate picture of what those prehistoric women were doing. “By analyzing the bones of living people and comparing them to the ancient hones, we can start to explain the kinds of labor our ancestors were performing,” Macintosh said. What they found was that women's leg strength hasn't changed a great deal, but their arms used to be very powerful. Prehistoric women, the researchers found, had arm strength 11〜16 percent stronger than those of modern rowers, and 30 percent stronger than those of non-athletes.

    Medicine is the most noble of all the arts, but owing to the ignorance of those who practice it, and those who inconsiderately form a judgment of them, it is now far behind all the other arts. Their mistake appears to me to arise principally from the fact that there is no punishment for the practice of medicine except disgrace, and that does not hurt those who are familiar with it. Such persons are like the figures introduced in tragedies, for as they have the shape, and dress, and appearance of an actor, but are not actors, so also physicians are many in title but very few in reality.

    Whoever is to acquire a competent knowledge of medicine ought to process the following advantages: a natural character; instruction; a favorable position for the study; early tuition; love for labor; leisure. First of all, a natural talent is required, for Nature leads the way to what is most excellent; then instruction in the art takes place, which the student must try to adopt by reflection, becoming an early pupil in a place well adapted for instruction. He must also bring to the task a love of labor and perseverance to ensure the instruction takes root.

    Instruction in medicine is like the culture of the productions of the earth. For our natural character, is, as it were, the soil; the principals of our teacher are, as it were, the seed. Instruction in youth is like the planting of the seed in the ground at the proper season. Diligent study is like the cultivation of the fields; and it is time which passes on strength to all things and brings them to maturity

    Having brought all these essentials to the study of medicine, and having acquired a true knowledge of it, we shall thus, in travelling around, be respected physicians not only in name but in reality. Inexperience is a bad trait, and does harm to those who possess it, nurturing either timidity or audacity(胆大安为). For timidity reveals a want of powers, and audacity a lack of skill. Physicians who are eager for power or those who are undertrained are not a blessing to a community.

    Those things which are sacred or noble, are to be delivered only to sacred persons; and it is wrong to import them to the profane until they have been initiated in the mysteries of the science.

    The skin under the eyes is delicate, which is why it sometimes appears sunken and has darker coloring than elsewhere on the face. Aging and health problems play a role in sunken eyes but other factors can contribute, so it may affect younger people as well.

Dehydration

    The most common cause of sunken eyes is dehydration, or not having enough water in the body. Consuming too much coffee, soda, and prepackaged drinks may increase production of urine(尿液), which may lead to dehydration.

    Vitamin shortages

    Shortages of vitamin C, vitamin K, and iron can cause eyes to become sunken. Vitamin C helps with absorbing iron and decreasing bruising(瘀斑), while vitamin K is responsible for blood thickening, causing unhealthy skin. Easy bruising and unhealthy skin will result in sunken eyes.

    Weight loss

    Most people tend to lose weight in their face first. Sometimes, the weight loss is sudden enough to make blood vessels(血管)below the eyes easy to see, and the skin clear, producing the appearance of sunken eyes. Sudden weight loss may also cause nutritional shortages, which can lead to sunken eyes.

    Not enough sleep or poor quality sleep can cause sunken eyes and a person's DNA or the habit of smoking can also contribute to sunken eyes. Most cases of sunken eyes relate to the quality of an individual's nutrition and healthy living. When these causes are corrected, sunken eyes can be resolved without further treatment. This means that causes can be avoided or treated in good time to prevent the recurrence of sunken eyes.

    HONG KONG-Cross-border buses operated by Hong Kong companies on Friday started trial runs on the Hong Kong-Zhuhai-Macao Bridge (HZMB) in preparation for the bridge's upcoming opening.

    "The trial runs, arranged by the governments of the Chinese mainland, the Hong Kong Special Administrative Region (SAR) and the Macao SAR, would last for three days and aimed at testing the readiness of boundary crossing facilities (设施) of the three places," the Hong Kong SAR government's Transport and Housing Bureau told Xinhua.

    Two major cross-boundary coach trade associations in Hong Kong were invited to send buses and members to participate in the trial runs.

    Freeman Cheung, secretary of Hong Kong Guangdong Boundary Crossing Bus Association, said his association would run one bus with about 10 passengers on Friday and Saturday respectively as part of the trial runs.

    "Our bus started at noon from the Hong Kong Boundary Crossing Facilities and ran all the way to Zhuhai in about 40 minutes," he said, adding that "the journey was smooth."

    Alan Chan, secretary of another trade association who participated in the trial runs as a passenger, said the clearance procedures at boundary crossing facilities of the three places all went on well and smoothly.

    "The boundary crossing facilities of Zhuhai and Macao, in particular, are operated in a collaborative (合作的) way, which helps remarkably shorten the time needed for the clearance procedures," he said.

    The HZMB, situated at the waters of Lingdingyang of Pearl River Estuary, is a mega-size sea crossing linking the Hong Kong SAR, Zhuhai city of Guangdong Province and the Macao SAR.

    The 55-km bridge is the longest bridge-and-tunnel (隧道) sea crossing in the world.

    The bridge is meant to meet the demand of passenger and freight land transport among Hong Kong, the Chinese mainland and Macao, and to establish a new land transport link between the east and west banks of the Pearl River.

    Roughly the size of a soda can, sitting on a bookshelf, a relatively harmless device(设备) may be turning friends away from your home. The elephant in your living room is your Internet-connected camera, a device people are increasingly using for peace of mind in their homes. But few stop to think about the effect these devices may have on house guests. Should you tell your friends, for instance, that they're being recorded while you all watch the big game together?

    "It's certainly new territory, especially as home security cameras become easier to fix," says Lizzie Post, president of the Emily Post Institute, America's distinguished manners advisors." I think it will be very interesting to see what manners appear in terms of whether you tell people you have a camera or not, and whether guests have a right to ask that it be turned off, if it's not a security issue. "Post wants to make clear that she's not talking about legal rights, but rather personal preference.

When it comes to security cameras, Post says it's a host's responsibility to make sure guests feel comfortable within their home. If the host casually acknowledges that there is a camera in the room by telling a story about it, that may be enough to provide an opening for a guest to say if they are uncomfortable.

    However, if a contractor(合约工)is working in your home, you don't need to tell them that there are cameras watching. Then again, the camera can also work in contractors' favor. "If anything does go wrong while they're in the house, they don't want to be blamed for it," she says. "In fact, the camera could be the thing that proves that they didn't steal the $20, or knock the vase off the table.

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(露台)where the tables were ll empty except where the old man sat in the shadow of the leaves of the tree that moved slightly in the wind. 

"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 tapped 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 younger waiter took the brandy bottle and marched out to the old man's table. 

"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. "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.