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1/9 盈学科网书城■ 品牌书店·知名教辅·正版资源 b.zxxk.c0m○ 您身边的互联网+教辅专家 课时作业（一） 主题阅读集群训川练 L.解 (2023.When someone damages his backbone,the injury can leave him paralyzed(Now,scientists have given three paralyzed men the ability to walk again,thanks to an implanted device. The human backbone,or the spine,doesn't just help us stand up straight.Inside is the spinal cord,which carries important information between the head and the lower part of the body.This information moves around as bursts of electricity travelling between the brain and the other parts of the body.When the spinal cord is hurt,this pathway gets damaged and the patients can't move their legs. Now scientists in Switzerland have given three paralyzed men the ability to walk again.To walk again,the men had surgery.A special device was placed directly on the lower part of their spinal cord,below their injury.This "implant" contains sixteen electrodes,which are small objects that electricity can pass through.The researchers made sure the electrodes were lined up with nerves that control the leg muscles.The scientists controlled the implant from a tablet computer. The patients'brains aren't sending "walking"messages to their legs.Instead, the tablet tells the implant to send the walking messages.The researchers used computers to generate patterns of movement,like taking a step.The patient then used the tablet to choose the pattern and the muscles move in the chosen way.Over time,the men were able to walk using a special walker with buttons to control each leg. The solution isn't perfectIt's very expensive,it requires difficult surgery,and the patients can't walk without the system.But the scientists are hopeful that in the future,this sort of technology will allow many paralyzed people to begin to walk again in just hours. 孩收音选李徒 1.What's the main function of the spinal cord? A.It serves as a message carrier. B.It helps people stand up straight. C.It takes control of the muscles. D.It produces signals for movements. 新边细题锯单知糊惠梦