There are good reasons to value our friendships.Some years ago a public-opinion research firm,Roper Starch Worldwide,asked 2007 people to name one or two things that said the most about themselves.Friends far outranked homes jobs, clothes and cars.

    “Ironically,” says Brant R.Burleson, professor of communication at Purdue University in West Lafayette, Ind., “the better friends you are, the more likely you'll face conflicts.” And the outcome can be what you don't want—an end to the relationship.

    The good news is that most troubled friendships can be mended.

    Swallow your pride. It wasn't easy, but that's what Denise Moreland of Hickam Air Force Base in Hawaii did when a friendship turned sour.For nearly four months,Moreland,45,had watched over Nora Huizenga's two young daughters, who were living with their father on the base,while Huizenga,40,completed training as a dental hygienist in Nevada.“I felt honored to be asked to step in,” Moreland says.

    “When Huizenga returned at Christmas,” Moreland recalls,“I had so much to tell her, but she never called.”

    One daughter had a birthday party, but Moreland wasn't invited. “I felt like I'd been used,” she says.At first, Moreland swore to avoid Huizenga.Then she decided to swallow her pride and let her friend know how she felt. Huizenga admitted that she'd been so worried about being separated from her family that she'd been blind to what her friend had done to help her. Today she says, “I would never have figured out what happened if Denise hadn't called me on it.”

    When a friend hurts you, your instinct is to protect yourself.But that makes it harder to solve problems,explains William Wilmot,author of Relational Communication.“Most of us are relieved when differences are brought out in the open.”

    Apologize when you're wrong—even if you've also been wronged.But over the course of a friendship, even the best people make mistakes. “We don't think clearly when we're arguing,” says Michael Lang,a professional mediator (调解人) in Pittsburgh. Instead, says Lang, ask: “What's going on? This doesn't make sense.”

    See things from your friend's point of view. Sociologists Rebecca Adams Rosemary and Blieszner interviewed 53 adults who each had many friendships lasting decades. “We were curious how these people managed to sustain strong friendships for so long,” says Blieszner. Tolerance is key, the researchers learned.” It's surprising how often a dispute results from a simple misunderstanding,” adds psychotherapist Anne Frenkel.

    Accept that friendships change. “Friendships change as our needs and lifestyles change,” Wilmot observes.

    Making friends can sometimes seem easy,says Yager.The hard part is keeping the connections strong during the natural ups and downs that affect all relationships.Her suggestion: Consider friendship an honor and a gift,and worth the effort to treasure and nurture.

    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.”

    Science is always advancing over time. A self-driving car from the Google may be coming to a street near you. However, you won't be able to buy it now. “We're working to build the world's most experienced driver,” Kraft, director of the project, said. “Everything that we learn in one of our cars gets passed to all of our cars. But you may need to get over the idea of traditional car ownership along the way.”

    Google's software has already driven 5 million miles in U.S. cities, including an “early rider” test in Phoenix last April. Since then Google has grown confident enough to remove the “auxiliary wheel”: a human “safety driver”. Powering the vehicle's self-driving functions is a series of cameras, radars and sensors on the car's roof, which detect everything nearby from other vehicles and passers-by to cyclists.

    Kraft stressed that Google's cars aren't connected—they don't need a 5G wireless link to go anywhere. “The car has everything it needs to drive on the car itself.” He said, “There are no signals coming from outer space or something telling it to turn right.” The resulting ride may not be too exciting but safe. Kraft added. “We can see three football fields down the road, we would come to a stop before we ran into these crowds.”

    Google's system has a major advantage over the semi-autonomous（半自主的）systems of Tesla and Cadillac, both of which need continued human attention. Kraft said Google plans to have service in every major city by 2028 with thousands of cars driving themselves.

    They already guide blind and disabled people; now dogs are to be trained to help people with dementia(痴呆) or Alzheimer's. Alzheimer's can make people confuse night and day or forget basic things such as washing and drinking enough water.

    The dogs will be trained to respond to sound triggers(触发器) in the home that make them perform tasks. The duties will include reminding their owners to take medicine, as well as encouraging them to eat, drink and sleep regularly.

    The idea was developed by design students at the Glasgow School of Art and will now be put into practice by Alzheimer's Scotland and Dogs for the Disabled. The first dogs will be distributed to four Scottish couples, where one of the partners is in the early stages of dementia. 670,000 people in Britain have dementia and one in three over 65 will develop the condition. By 2021 this is expected rise to one million.

    John Gray of Alzheimer's Scotland said, "People in the early stages of dementia are still able to live a relatively normal life, and dogs help to maintain routine. " Another advantage of using the pets as companions is that dogs can give them a sense of silent support and companionship. Ms Gray said: "The evidence is that people may forget familiar faces but not pets. It's such a strong bond that people often remember them longest. People don't need to communicate verbally(口头上) but they can still interact. You can have a speechless bond."

    Helen McCain, director of Dogs for the Disabled, said, "People with dementia often forget to take medicine. If a dog presents them with a bag with pills in it, there is a greater chance of them taking it. The dogs would also encourage the owners to take them out for walks, ensuring they keep exercising and interacting with other people."

    A lifetime of active exercise will let you keep the body of a 20-year-old well into your 70s, scientists have found.

    The physical decline (衰退) thought to be an unavoidable part of ageing is actually the result of not exercising enough, according to the research, which found that regular cyclists kept the muscles, lungs, and even the immune system (免疫系统) of people years younger. Besides, many serious health problems could be prevented if people became more active, researchers insist.

    Janet Lord, a leading researcher, said, “Our findings prove the false belief that ageing automatically makes us weaker. We now have strong evidence that encouraging people to do regular exercise throughout their lives can solve the problem that we are living longer but not healthier.”

    She looked at 125 cyclists aged 55 to 79 who had been exercising regularly for 25 years and compared them with 75 ordinary people of a similar age and 55 people aged 20 to 36. On a series of physical measures, the cyclists showed no difference from people much younger in their immune systems and making T cells.

    Now Professor Lord aims to discover how much exercise people need to do to stay young. “You needn't work out a lot. It may be intensity (强度) that helps—like going up and down the stairs ten times a day.”

    While there is no magic method of staying mentally and physically fit in later life, the benefits of keeping active can never be ignored, whatever your age or state of health.

As the Chinese saying goes,"Roads lead to riches. "And this is{#blank#}1{#/blank#}Somxay Laolion,a Laotian driver on the China-Laos Railway,has observed over the past two-and-a-half years. 

As a driver travelling{#blank#}2{#/blank#}Vientiane and Boten (border town),he can see more and more houses and factories{#blank#}3{#/blank#}(build)along the route. The 1,035-kilometer railway,{#blank#}4{#/blank#} is a flagship project under the China-proposed Belt and Road Initiative,connects Kunming,the capital of Southwest China's Yunnan province,with the Laotian capital,Vientiane.{#blank#}5{#/blank#} (adopt)Chinese technical standards,the China-Laos Railway is China's first international railway project{#blank#}6{#/blank#}(primary)funded and built by Chinese companies and{#blank#}7{#/blank#}(connect)to China's railway network. 

Since June 2020,the Laos-China Railway Co has recruited and trained Lao trainees and more than 800 Lao employees,or over 90 percent of the trainees,{#blank#}8{#/blank#} (assign)specific positions. 

The China-Laos Railway has opened "a new phase of development"for Laos to transform{#blank#}9{#/blank#}(it)from a landlocked country to a land-linked one. The railway has maintained a positive trend of increasing volume and{#blank#}10{#/blank#}(efficient),as well as thriving passenger and freight businesses. The China-Laos Railway has become a road of development, happiness,and friendship for the Lao and Chinese people.