Sound travels in the form (形式) of ______. The passage is mainly about ______.

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问题 Sound travels in the form (形式) of ______.
The passage is mainly about ______.

选项 A、waves in the air
B、the way you hear your own voice
C、the different ways you and others hear your voice

答案C

解析 本文主要讲的是别人与自己听自己的声音的差别。
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