Sound travels in the form (形式) of ______. [br] When you talk, other people hear

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问题 Sound travels in the form (形式) of ______. [br] When you talk, other people hear your voice ______.

选项 A、throught the bones of your head
B、from the outside
C、from the inside

答案 B

解析根据原文第三段可知选B。

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