Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago． {#blank#}1{#/blank#}

    The scientists say that the human life has changed greatly．Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses． {#blank#}2{#/blank#} So they are called “diseases of civilization”．Many cancers and diseases of the blood system are examples of such diseases.

    Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none． {#blank#}3{#/blank#} However, a change in food is one of the main differences between life in ancient times and that of today.

    Stone Age people hunted wild animals for their meat, which had much less fat than domestic ones．They ate a lot of fresh wild vegetables and fruits．They did not have milk or any other dairy products, and they made very little use of grains． {#blank#}4{#/blank#} We eat six times more salt than our ancestors．We eat more sugar．We eat twice as much fat but only one third as much protein and much less vitamin C.

    {#blank#}5{#/blank#} But scientists say that we would be much healthier if we eat much the same way the ancient people did, cutting the amount of fatty, salty and sweet food.

A．Stone Age people lived a simple life.

B．But today, we enjoy eating a lot of these.

C．In that case, they would live much healthier.

D．Ancient people also got lots of physical exercise.

E．These new sicknesses were not known in ancient times.

F．People today probably don't want to live like our ancestors.

G．Modern people used to suffer from “diseases of civilization”.

    Years ago parents worried their children would learn the truth about Santa Claus(圣诞老人)from others, but now they have a new problem—the Internet.

    A recent study from Hide My Ass! Shows 1 in 8 American parents said the Internet told their children the truth about Santa Claus. 44% of parents thought Google was a danger to this Christmas story, as children searched for Santa and found pages explaining he is not real. About 34 percent of children questioned Santa Claus after seeing ads online for gifts they had asked for in their letters to the North Pole (北极). Sadly，one in three children said their Christmas spirit was dead after reading a post saying Santa wasn't real.

    Before the Internet, the only way children found out their parents bought their gifts was if they were in a bad hiding place. Today, two-thirds of parents never clear their browser (浏览器) history, making it easy for kids to find out the gifts under the tree weren't put there by a happy man and his little helpers.

    To keep Mr. Claus alive, “Keep Believing in Santa”, an organization created by Hide My Ass!, helps kids believe in Santa. Parents receive free software from the organization that monitors all online search results and web pages that could tell kids the truth about the man who lives in the North Pole, by hiding any information that may suggest he doesn't exist.

    However, there is still a higher possibility of the Internet now being the main cause of a child's belief in Santa ending, and it can also result in kids finding out sooner than for those born before the digital age.

    ''With this organization, we wanted to give parents a new tool that would allow them to keep the magic of Christmas and the mystery of Santa for that little bit longer,” Cian  Mckenna-Charley, marketing director at Hide My Ass!.

    For Canaan Elementary's second grade in Patchogue, N.Y., today is speech day, and right now it's Chris Palaez's turn. The 8-year-old is the joker of the class. With shining dark eyes, he seems like the kind of kid who would enjoy public speaking.

    But he's, nervous. "I'm here to tell you today why you should … should…"Chris trips on the "-ld," a pronunciation difficulty for many non-native English speakers. His teacher, Thomas Whaley, is next to him, whispering support."…Vote for …me …"Except for some stumbles, Chris is doing amazingly well. When he brings his speech to a nice conclusion, Whaley invites the rest of the class to praise him.

    A son of immigrants, Chris stared learning English a little over three years ago. Whaley recalls(回想起)how at the beginning of the year, when called upon to read, Chris would excuse himself to go to the bathroom.

    Learning English as a second language can be a painful experience. What you need is a great teacher who lets you make mistakes. "It takes a lot for any student," Whaley explains, "especially for a student who is learning English as their new language, to feel confident enough to say, 'I don't know, but I want to know.'"

    Whaley got the idea of this second-grade presidential campaign project when he asked the children one day to raise their hands if they thought they could never be a president. The answer broke his heart. Whaley says the project is about more than just learning to read and speak in public. He wants these kids to learn to boast(夸耀)about themselves.

    "Boasting about yourself, and your best qualities," Whaley says, "is very difficult for a child who came into the classroom not feeling confident."

    Kincaid looked at his watch: eight-seventeen. The truck started on the second try, and he backed out, shifted gears, and moved slowly down the alley under hazy sun. Through the streets of Bellingham he went, heading south on Washington 11, running along the coast of Puget Sound for a few miles, then following the highway as it swung east a little before meeting U.S Route 20.

    Turning into the sun, he began the long, winding drive through the Cascades. He liked this country and felt unpressed stopping now and then to make notes about interesting possibilities for future expeditions or to shoot what he called "memory snapshots." The purpose of these causal photographs was to remind him of places he might want to visit again and approach more seriously. In later afternoon he turned north at Spokane, picking up U.S. Route 2, which would take him halfway across the northern United States to Duluth, Minnesota.

    He wished for the thousandth time in his life that he had a dog, a golden retriever, maybe, for travels like this and to keep him company at home. But he was frequently away; overseas much of the time and it would not be fair to the animal. Still, he thought about it anyway. In a few years he would be getting too old for the hard fieldwork. "I must get a dog then." He said to himself.

    Drives like this always put him into a sentimental mood. The dog was part of it. Robert Kincaid was alone as it's possible to be—an only child, parents both dead, distant relatives who had lost track of him and he of them, no close friends.

    He thought about Marian. She had left him nine years ago after five years of marriage. He was fifty-two now, that would make her just under forty. Marian had dreams of becoming a musician, a folksinger. She knew all of the Weavers' songs and sang them pretty well in the coffeehouse of Seattle. When he was home in the old days, he drove her to the shows and sat in the audience while she sang.

    His long absences—two or three months sometimes—were hard on the marriage. He knew that. She was aware of what he did when they decided to get married, and both of them had a vague sense that it could all be handled somehow. It couldn't when he came from photographing a story in Iceland and she was gone. The note read, "Robert, it didn't work out. I left you the Harmony guitar. Stay in touch."

    He didn't stay in touch. Neither did she. He signed the divorce papers when they arrived a year later and caught a plane for Australia the next day. She had asked for nothing except her freedom.

    People in Japan tend to live longer and stay healthier in their later years, with an increasing number of old people living alone. Japan is on a fast track to "ultra-age" with people aged 65 or above accounting for 28 percent of its total population in 2019；it was 26.7 percent in 2017. On the other hand, the number of births in 2019 fell to its lowest (about 941,000) since records began in 1899.

    Demand for care services for elderly people has increased. A shrinking (缩小) working population means fewer able-bodied adults are available to look after the elderly. State-provided facilities for the elderly are not enough which causes elderly people to turn to private ones but they are expensive.

    The country will be short of 380,000 of health nurses by 2025. The government has to turn to advanced robots to meet the shortage. A study found that using robots encouraged one third of the people to become more active and independent. Yet there is no robot that can provide the emotional support to the elderly.

    Japan provides a case study for China, which is also faced with a fast aging population. 17.23 million babies were born in China in 2019, about 630,000 fewer than in 2018. People aged 60 accounted for 17.3 of China's population in 2019. With a shortage of elderly care facilities and unbalanced supply, China may find it hard to deal with the rapidly increasing number of senior citizens.

    To meet the challenge, the Chinese government should make policy changes, which Japan is unwilling or unable to do or even consider. China should pay attention to the signals its aging population is sending and take proper and timely action.

    So you're thinking about breaking up with me. But before doing that, make sure you have examined its short-term and long-term environmental effects.

    Let's start simple: consider the great number of gallons of clean, drinkable water that would be wasted by my crying in the shower. Scientists don't have a precise estimate of how much water might be lost, but, considering the length of my listening to the recent two sad albums during the shower, the amount is sure to be catastrophic.

    Make no mistake: running from my sweet hug leaves a set of carbon footprints. Your leaving me will start a swift chain of events that results in me at a bar, drunkenly cursing at you with my friends.

    At the end of the night, I will be forced to take a taxi home instead of the subway. Those extra carbon dioxide releases are a breakup by-product, as are the single-use plastic bottles of Glacier Freeze-flavor Gatorade I'll surely buy the next morning.

    Some effects are more hidden. Should you kick me to the roadside, you must anticipate that I am going to sit there eating ice cream. I will eat ice cream a lot every day, because I have seen sad women do this in movies. This, of course, causes ecological disaster. Not only do dairy cows produce greenhouse gas, but industrial dairy farming can cause the destruction of prairies (北美草原) forests, and other ecosystems. You might meet other interesting women in your life, but good luck is replacing North America's wetlands!

    Breaking up with me is a very personal choice, and no one can make it for you. I only hope that you have gained a helpful new way of thinking, one broad enough to deal with the world that waits for you in your single-hood. There might be "other fish in the sea," but will there be actual fish in the real sea? It doesn't look good. Alternatively, we could stay together and preserve this beautiful blue sea for our grandchildren. The Intergovernmental Panel on Climate Change and I eagerly wait for your decision.