把耳朵的结构和它的功能用线连起来。

耳郭                                                                将声波转化为振动

耳道                                                                将振动转化为听觉信号

鼓膜                                                                 接收声波

听小骨                                                              将听觉信号传到大脑

耳蜗                                                                 传递声波到中耳

听觉神经                                                           传递振动到内耳