原题
There are four locations █ in the passage that indicate where the following sentence could be added.
Spider Silk in Medicine
Spider silk is one of nature's most remarkable materials, known for its strength and elasticity. Stronger than steel and highly stretchable, spider silk has inspired researchers to explore its medical potential.
Researchers have experimented with spider silk as a surgical suture material for use in stitching wounds, praising its strength and biocompatibility—a material's ability to interact with the human body without causing adverse reactions, such as inflammation or rejection. Spider silk meets this criterion exceptionally well. It integrates smoothly with human tissues, minimizing immune response and promoting faster healing. Additionally, its natural elasticity helps the sutures adapt to bodily movements, reducing the risk of sutures rupturing under tension.
Spider silk has been woven into advanced dressings for wounds that accelerate recovery. Spider silk's biocompatibility and ability to retain moisture make it ideal for treating chronic wounds and joint injuries. Spider silk-based bandages can also be infused with medications for localized drug delivery, reducing infection risk and improving treatment outcomes.
However, large-scale production is challenging. █ Spiders are territorial and cannibalistic, making farming them for silk impractical. █ Scientists have turned to synthetic methods of producing spider silk using genetically modified bacteria and yeast, but scaling up these techniques remains difficult. █ Researchers continue refining techniques to make spider silk more accessible. █
By contrast, silkworms, traditionally used for obtaining silk, are domesticated and easy to manage.
解题思路
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