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  3. Nerve signals may travel through nerve o

Nerve signals may travel through nerve o

tikufree2019-12-17  61
问题 Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.
选项 A:velocities        B:impulsesC:ratios        D:atrocities
答案A
解析本句话的意思：“神经信号在神经及肌肉纤维里以每小时200公里的速度传递。”speed意为“速度”。velocity意为“速度，快速”，如：The car was moving at such a velocity！那辆汽车的速度简直太快了！impulse意为“冲动”，如：He bought the house on an impulse.他一时冲动买下了这所房子。ratio意为“比率”，如：The ratio of schoolboys to schoolgirls is 2 to 1.男学生和女学生的比例是2:1。atrocities意为“暴行”，如：People were annoyed by his atrocity.他的暴行激怒了人们。只有选项A与speed含义相近。
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