A
Imagine if SpiderMan came down from the ceiling to save Yao Ming or Shaquille O'Neal every time they injured their ligaments(韧带)on court.Though this __1__ will have to remain a daydream,spider silk may really be able to cure their __2__,scientists say.
Thought to be the strongest __3__ fiber on the planet,spider silk could be used to rebuild injured ligaments.Randolph Lewis at the University of Wyoming in Laramine has been __4__ the idea.
Spider silk has interested scientists for centuries.A(n)__5__ European folk story at least 2,000 years old tells of the possible medical __6__ of spider webs.It said they could help in fighting infections,stopping bleeding and healing wounds.
Researches have found no __7__ so far that spider webs can kill germs.But studies on animals have shown that spider silk helps __8__ the rejection of medical implants.So Lewis' lab and others are changing spider silk into fibers that they hope might be __9__ in medicine.
Researchers have found that spider webs could be used to rebuild ligaments __10__ in one of the world's common knee injuries.“We're also __11__ spider silk in artificial tendons(腱).” Lewis said.
Scientists are also __12__ spider silk to be used for stitching up(缝合)wounds which will help them heal without scarring(伤痕).
1.A.hope
B.idea
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