Because noises modulate radio frequency, radio stations use a band of frequencies to prevent interference with other stations.

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问题 Because noises modulate radio frequency, radio stations use a band of frequencies to prevent interference with other stations.

选项 A、govern
B、adapt
C、temper
D、renovate

答案A

解析 modulate指“调节”,与A项的govern(也可表示“调节”)含义接近。temper“使缓和”;adapt“使适应”;renovate“革新”。
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