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The key to pleasant music may be that it pleases our neurons. A new model suggests that【C1】______musical intervals trigger a rhy
The key to pleasant music may be that it pleases our neurons. A new model suggests that【C1】______musical intervals trigger a rhy
admin
2014-07-20
65
问题
The key to pleasant music may be that it pleases our neurons. A new model suggests that【C1】______musical intervals trigger a rhythmically【C2】______ firing pattern in certain auditory neurons, and that sweet sounds carry more information than【C3】______ones.
【C4】______ the time of the ancient Greeks, we have known that two tones whose【C5】______ were related by a simple ratio like 2:1 or 3: 2 produce the most pleasing, or consonant, musical intervals. This effect doesn’t depend on musical【C6】______—infants and even monkeys can hear the difference. But it was unclear whether consonant chords are easier on the ears【C7】______the way the sound waves combine in the air, or the way our brains【C8】______ them to electrical impulses. A new mathematical model presents a strong【C9】______for the brain.
"We have found that the reason for this difference is【C10】______at the level of neurons," says Yuriy Ushakov at the N. I. Lobachevsky State University of Nizhniy Novgorod in Russia. Ushakov and colleagues considered a simple mathematical model of the way sound 【C11】______from the ear to the brain. In their model, two sensory neurons 【C12】______ to different tones. Each sends an electrical signal to a third neuron, called an interneuron, which sends a final signal to the brain. The model’s interneuron fires【C13】______ it receives input from【C14】______ or both sensory neurons.【C15】______, the signals from the sensory neurons arrive at the same time if the tone is consonant, and so the interneuron still fires just once, then waits until it "【C16】______" before it fires again. The result is a(n) 【C17】______train of pulses.
【C18】______, the signals from harsh tones arrive at【C19】______times and so generate an【C20】______ spaced train of pulses in the interneuron.
【C9】
选项
A、case
B、evidence
C、event
D、influence
答案
A
解析
名词辨析题。句意为:新的数学模型展示了大脑转换这一方式的有力依据。[A]case“事例,实例”,例如:a good case in point(一个很好的例子),astrong case for(一个有说服力的理由),故为答案。[B]evidence“证据”,为不可数名词,前面不能加a,且后面接介词of;[C]event“事件”和[D]influence“影响”,不符合语境要求。
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0
专业英语四级
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