题型:阅读理解 题类:常考题 难易度:普通
江苏省常州市田家炳高级中学2019届高三英语开学考试试卷
For centuries, medical pioneers have refined a variety of methods and medicines to treat sickness, injury, and disability, enabling people to live longer and healthier lives.
“A salamander (a small lizard-like animal) can grow back its leg. Why can't a human do the same?” asked Peruvian-born surgeon Dr. Anthony Atala in a recent interview. The question, a reference to work aiming to grow new limbs for wounded soldiers, captures the inventive spirit of regenerative medicine. This innovative field seeks to provide patients with replacement body parts.
These parts are not made of steel; they are the real things — living cells, tissue, and even organs.
Regenerative medicine is still mostly experimental, with clinical applications limited to procedures such as growing sheets of skin on burns and wounds. One of its most significant advances took place in 1999,when a research group at North Carolina's Wake Forest Institute for Regenerative Medicine conducted a successful organ replacement with a laboratory-grown bladder. Since then, the team, led by Dr. Atala, has continued to generate a variety of other tissues and organs—from kidneys to ears.
The field of regenerative medicine builds on work conducted in the early twentieth century with the first successful transplants of donated human soft tissue and bone. However, donor organs are not always the best option. First of all, they are in short supply, and many people die while waiting for an available organ; in the United States alone, more than 100,000 people are waiting for organ transplants. Secondly, a patient's body may ultimately reject the transplanted donor organ. An advantage of regenerative medicine is that the tissues are grown from a patient's own cells and will not be rejected by the body's immune system.
Today, several labs are working to create bioartificial body parts. Scientists at Columbia and Yale Universities have grown a jawbone and a lung. At the University of Minnesota, Doris Taylor has created a beating bioartificial rat heart. Dr. Atala's medical team has reported long-term success with bioengineered bladders implanted into young patients with spina bifida (a birth defect that involves the incomplete development of the spinal cord). And at the University of Michigan, H. David Humes has created an artificial kidney.
So far, the kidney procedure has only been used successfully with sheep, but there is hope that one day similar kidney will be implantable in a human patient. The continuing research of scientists such as these may eventually make donor organs unnecessary and, as a result, significantly increase individuals' chances of survival.
Welcome to Holker Hall & Gardens
Visitor Information
How to Get to Holker
By Car: Follow brown signs an A590 from JB6, M6. Approximale travel times: Windermere-20 minutes, Kendal-25 minutes, Lancaster-45 minutes, Manchester-1 hour 30 minutes.
By Rail: The nearest station is Cark-in-Cartmel with trains to Carnforth, Lancaster Preston for connections to major cities & airports.
Opening Times
Sunday-Friday (closed on Saturday)11:00 am-4:00pm,30 March-2nd November.
Admission Charges
Hall & Gardens |
Gardens |
|
Adults: |
£12.00 |
£8.00 |
Groups |
£9 |
£5.5 |
Special Events
Producers: Market 13th April
Join us to taste a variety of fresh local food and drinks. Meet the producers and get some excellent recipe ideas.
Holker Garden Festival 30th May
The event celebrate its 22nd anniversary with a great show of the very best of gardening, making it one of the most popular events in gardening.
National Garden Day 28th August
Holker once again opens is gardens in aid of the disadvantaged. For just a small donation you can take a tour with our garden guide.
Winter Market 8th November
This is an event for all the family. Wander among a variety of shops selling gifs while enjoying a live music show and nice street entertainment.
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