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.

    Relieving poverty has been one of our government's top concerns for the past decades. Poverty(贫困) in remote areas in China is virtually a great obstacle for the Chinese to get common progress; thus, it is urgent for us to help the people there to shake off poverty the sooner the better. For this aim, the government has already sent technicians and experts to poverty-stricken areas to help boost local agricultural production and teach the locals new techniques. The Ministry of Labor has also trained many rural laborers through different programs. But all these are not enough. Several other ways have been proposed as follows.

    First of all, the government should encourage a small part of the people in the remote areas to get wealthy ahead of others by equipping them with relevant funds and agricultural technology. These “better-offs” can not only set a good example but give confidence to the poorer in their efforts to get rid of poverty. When all the people get rich, the general level of living standard can be greatly improved. With their living standard improved, they can attach greater importance to environmental protection and are willing to input considerable amount of money to educate their children. Only in this way is a sustainable development guaranteed.

Secondly, we must call upon people in all walks of life throughout the country, especially those wealthy citizens in coastal areas to help those struggling below poverty line in poor remote regions out. We must realize that only after all Chinese people live a comfortable life can we be peacefully enjoying material prosperity in life. Helps can come in various forms—-donating money to the poor family and books to school drop-outs, college graduates volunteering to work in the most needed regions, bringing knowledge to them, etc.

    The last but not the least, the government should raise the rate of tax on the rich. This can shorten the gap between the poor and the rich as well as benefit the country's revenues(财政收入) whose better part is in turn allocated to the poor remote areas.

    Admittedly, it is never easy to cast off the shadow of poverty in the remote areas completely in the short run. But every one of us should go all out to help those in poverty, we are confident that our country will be more powerful and prosperous in the process of relieving poverty.

    A new library in Tianjin—Tianjin Binhai Public Library—recently became an online hit. The Daily Mail described it as “breathtaking”. One look at the library and you'll see why. With its very futuristic design and walls loaded with books, it's the dream library of every book lover.

    But there's a burning question lying in the back of our minds: with physical bookstores closing down one by one, what makes libraries survive the wave of digitalization? Do we really still need libraries as we've got the internet in our hands?

    Reporter Ian Clark has the answer. “Libraries are not declining in importance. People are simply changing the way they use them,” he wrote on the Guardian website. Since not everyone can afford a smartphone, a tablet or an internet connection, and not everyone knows how to search the Internet correctly and efficiently, it's public libraries that make sure that these resources are available to a larger group of people.

    And one of the pitfalls that come with online materials is that they're not always reliable. “Google doesn't tell you what you're not getting, so people need to evaluate (评估) the quality of what they see on their screens,” Sarah Pritchard, dean of libraries at Northwestern University, told Northwestern Research Magazine. And libraries are usually where that “evaluation” happens.

    But we still need the physical space that a library provides. It's something that's called a “third place”, according to the Seattle Times. This is a place in which we can fully concentrate on our study and work without easily getting distracted. Compared to other “third places” like coffee shops, libraries have a “non-commercial nature” that allows you to relax completely.

    “Nobody is trying to sell you anything in the library. There is no pressure to buy and there is no judgment of your choices,” Anne Goulding, a professor at Victoria University in New Zealand, wrote on the Newsroom website.

    Smoking is harmful. But as soon as you quit the habit, everything will be OK, right? Wrong.

    New research has found that even if you give up smoking, the damage it has done to your genes will stay there for a much longer time. In the research, a team of US scientists studied the blood of 16,000 people. Among them, some were smokers, some used to smoke, and the rest were non-smokers. Scientists compared their genes and found that more than 7,000 genes of smokers had changed--a number that is one-third of known human genes.

    According to NBC News, both heart disease and cancer are caused by genetic changes. Some people may have had the changes when they were born, but most people get them in their day-to-day lives while doing things like smoking.

    When you stop smoking, a lot of these genes will return to normal within five years.

This means your body is trying to heal (治愈) itself of the harmful effects of smoking. But the changes in some of the genes stay for longer. They can stay for as long as 30 years, It's almost like leaving a footprint on wet cement (水泥)—-it will always be there, even when you've walked away and when the cement becomes dry.

    Although the study results may make people unhappy, there is a bright side: the findings could help scientists invent medicine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer risks.

    Dogs certainly need to bark (犬吠) every now and then, but if your neighbor's dog is getting in the way of your daily life, you need to do something.

    "Before you take action, you should record the dates and times that the barking happens to find out any patterns," says Schweitzer, who is a dog owner. You might notice the barking only happens when the owners are at work, or during thunderstorms.

    After two to three weeks of observing (观察), go to your neighbors with the facts. Wait for a time when the barking is over. "Since you're trying to keep a good relationship, you can't go when you're angry and upset," says Schweitzer. Besides, your neighbors might not even realize the barks are a problem, especially if the worst barking happens when they're not at home.

    Politely explain the times when the barking gets bad, and then suggest a way of solving the problem. Ask if the dog can stay inside during storms, or offer a dog training class.

    Making friends with the dog could help you gain some peace and quiet. If your neighbors introduce you to their dog, you should give the dog a treat. "If they become more comfortable seeing you, they're less likely to bark when they see you or when they're in the backyard，" says Schweitzer.

    Whatever you do, don't talk with your other neighbors about the problem or start a petition (诉状) to get the dog to quiet down. "Those make people feel angry," says Schweitzer. "That's when things escalate."

    If weeks go by and you still aren't seeing a difference, follow up with a note. Tie a dog treat on the note to build trust with your neighbors, and make a copy before dropping it off. That way, you'll have evidence (证据) that you've discussed it before and followed up politely if you need to bring in a third party, says Schweitzer.

    Shark attacks not only disturb beach activities, but can affect associated tourist industries. Shark nets are a common solution to preventing shark attacks on beaches, but they cause dangers to sea ecosystems.

    Seeking a cost-effective way to monitor beach safety over large areas, we have developed a system called Shark Spotter. It combines artificial intelligence (AI), computing power, and drone (无人机) technology to identify and warn lifesavers to sharks near swimmers. The project is a cooperation between the University of Technology Sydney and The Ripper Group, which is pioneering the use of drones—called "Westpac Little Ripper Lifesavers"—in the search and rescue movement in Australia.

    SharkSpotter can detect sharks and other potential threats using real-time aerial imagery. The system analyses video from a camera attached to a drone to monitor beaches for sharks, send warnings, and conduct rescues. Developed with techniques known as "deep learning", the Shark Spotter system receives imagery from the drone camera and attempts to identify all objects in the scene. Once certain objects are detected, they are put into one of 16 categories: shark, whale, dolphin, rays, different types of boats, surfers, and swimmers.

    If a shark is detected, Shark Spotter provides both a visual sign on the computer screen and an audible warning to the operator. The operator confirms the warning and sends text messages from the Shark Spotter system to the Surf Life Savers for further action. In an emergency, the drone is equipped with a lifesaving flotation pod (漂浮仓) together with an electronic shark repellent (驱逐装置) that can be dropped into the water in cases where swimmers are in severe trouble, trapped in a rip, or if there are sharks close by.

    In January 2018, the Westpac Little Ripper Lifesavers was used to rescue two young swimmers caught in a rip at Lennox Head, NSW. The drone flew down the beach some 800 meters from the lifeguard station, and a lifesaving flotation pod was dropped from the drone. The complete rescue operation took 70 seconds.

    We believe Shark Spotter is a win-win for both marine life and beachgoers. This unique technology combines dynamic video image processing AI and advanced drone technology to creatively deal with the global challenge of ensuring safe beaches, protecting environments, and promoting tourism.