2. 连接图示
<div><center> ![](https://www.showdoc.cc/server/api/common/visitfile/sign/435a322f18a82a70cd655685fa06301e?showdoc=.jpg)</center></div>
<h3><center>练习</center></h3>
<div><center>![](https://www.showdoc.cc/server/api/common/visitfile/sign/bfe1fbc11eb540dde5f698c1d506f577?showdoc=.jpg)</center></div>
<h3><center>演出</center></h3>
<div>
<center>![](https://www.showdoc.cc/server/api/common/visitfile/sign/1fb37ac8daee1def6fc0c59df9681880?showdoc=.jpg)</center></div>
<h3><center>录音</center></h3>