2. 外语
  3. Skin contains millions of sensory receptors which inform the brain, through electrical______, when you have injured yourself.

Skin contains millions of sensory receptors which inform the brain, through electrical______, when you have injured yourself.

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问题 Skin contains millions of sensory receptors which inform the brain, through electrical______, when you have injured yourself.
选项 A、compulsions
B、thrusts
C、impulses
D、signals
E、flashes
答案C,D
解析 The best answer is C and D. "Impulses" and "signals" match the scientific tone of the sentence, while also conveying the idea that messages of some kind are sent to indicate pain.
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