单项选择题

Questions 14 to 16 are based on a talk on pruritus, so called "severe itching"—why and how body parts itch. You now have 15 seconds to read Questions 14 to 16.
What in a human body generates a scratching or rubbing

A．C-fibers.
B．Brain.
C．Nerve.
D．Spinal cord.

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What is causing global warming according to Dr. Patz

Questions 14 to 16 are based on a talk on pruritus, so called "severe itching"—why and how body parts itch. You now have 15 seconds to read Questions 14 to 16. What in a human body generates a scratching or rubbing 您的浏览器不支持 audio 元素。