托福阅读背景材料：牙齿健康

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摘要：托福阅读背景材料：牙齿健康。小马小编为各位考生整理托福背景知识，下面就请大家跟随小编一起来了解这些背景知识吧。　　托福阅读背景材料：牙齿健康
　　How Medical technology is paving the way for people to (1)throw outthose dentures, bridges((假牙上的)齿桥) orsynthetic implants, and grow their own teeth back. I’m talking genuine teeth,the real McCoy. And you grow them in your mouth, in the very gaps where yourdear departed teeth used to sit. The magic dust, if you will, are stem cellsthat come from your own gums.
　　Stem cells are basically unprogrammed cells. They’re useful becausethey can be programmed to (2)take on various functions, depending on what abody’s in need of.You got it.So in this case, stem cells in your gums would beextracted in order to be programmed in a lab to grow a tooth. Then doctorswould insert them back into your gums, so they can do their job.
　　The procedure will be a lot less invasive and less traumatic thanmany current tooth replacement options. It’s beneficial too because a livingtooth isn’t motionless, but adjusts in response to a person’s bite, and indoing so it can help maintain the health of the surrounding teeth and gums.
　　Will the technology be available any time soon?Not but i'm planningon losing any teeth of course.I mean so I can tell my friend Bob.
　　Tell Bob the Scientists anticipate making the procedure available tothe public in about five years....
托福阅读背景材料：牙齿健康原文：http://toefl.xiaoma.com/jijingbeijing/20141120/320557.html?seo=b5

　

　　

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