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This week some top scientists, including Nobel Prize winners, gave their vision of how the world will look in 2056, from gas-pow
This week some top scientists, including Nobel Prize winners, gave their vision of how the world will look in 2056, from gas-pow
admin
2013-12-06
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问题
This week some top scientists, including Nobel Prize winners, gave their vision of how the world will look in 2056, from gas-powered cars to extraordinary health advances, John Ingham reports on what the world’s finest minds believe our futures will be.
For those of us lucky enough to live that long, 2056 will be a world of almost perpetual youth, where obesity is a remote memory and robots become our companions.
We will be rubbing shoulders with aliens and colonizing outer space. Better still, our descendants might at last live in a world at peace with itself.
Will we really, as today’s scientists claim, be able to live for ever or at least cheat the ageing process so that the average person lives to 150?
Of course, all these predictions come with a scientific health warning. Harvard professor Steven Pinker says: "This is an invitation to look foolish, as with the predictions of domed cities and nuclear-powered vacuum cleaners that were made 50 years ago." Living longer
Anthony Atala, director of the Wake Forest Institute in North Carolina, believes failing organs will be repaired by injecting cells into the body. They will naturally to straight to the injury and help heal it. A system of injections without needles could also slow the ageing process by using the same process to "tune" cells.
Bruce Lahn, professor of human genetics at the University of Chicago, anticipates the ability to produce "unlimited supplies" of transplantable human organs without the needed a new organ, such as kidney, the surgeon would contact a commercial organ producer, give him the patient’s immuno-logical profile and would then be sent a kidney with the correct tissue type.
These organs would be entirely composed of human cells, grown by introducing them into animal hosts, and allowing them to develop into and organ in place of the animal’s own. But Prof. Lahn believes that farmed brains would be "off limits". He says: "Very few people would want to have their brains replaced by someone else’s and we probably don’t want to put a human braining an animal body."
Richard Miller, a professor at the University of Michigan, thinks scientist could develop "authentic anti-ageing drugs" by working out how cells in larger animals such as whales and human resist many forms of injuries. He says: "It’s is now routine, in laboratory mammals, to extend lifespan by about 40%. Turning on the same protective systems in people should, by 2056, create the first class of 100-year-olds who are as vigorous and productive as today’s people in their 60s."
Spinal injuries
Ellen Heber-Katz, a professor at the Wistar Institude in Philadelphia, foresees cures for injuries causing paralysis such as the one that afflicted Superman star Christopher Reeve. She says: "I believe that the day is not far off when we will be able to proscribe drugs that cause severed spinal cords to heal, hearts to regenerate and lost limbs to regrow."
"People will come to expect that injured or diseased organs are meant to be repaired from within, in much the same way that we fix an appliance or automobile: by replacing the damaged part with a manufacturer-certified new part." She predicts that within 5 to 10 years fingers and toes will be regrown and limbs will start to be regrown a few years later. Repairs to the nervous system will start with optic nerves and, in time, the spinal cord. "Within 50 years whole body replacement will be routine," Prof. Heber-Katz adds.
What is John Ingham’s report about?
选项
A、Solution to the global energy crisis.
B、Extraordinary advances in technology.
C、The latest developments of medical science.
D、Scientists’ vision of the world in half a century.
答案
D
解析
答案在原文第一段的第一句“gave their vision of how the world will look in 2056”。
转载请注明原文地址:https://kaotiyun.com/show/4gU3777K
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