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单选题
When a machine analyses the frequencies used by a particular voice and draws a _____ of them, sound is converted into a pattern of lines.
A
figure
B
graph
C
picture
D
diagram
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参考解析
解析：
句意：当机器分析某个特定声音的频率并画出它们的图表时，声音也就被转变成了一种线状模式。graph图表，曲线图。figure数字，算术，图解。picture图画，照片。diagram图解。
句意：当机器分析某个特定声音的频率并画出它们的图表时，声音也就被转变成了一种线状模式。graph图表，曲线图。figure数字，算术，图解。picture图画，照片。diagram图解。
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