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国际音标：8个双元音小练习，有听力，有找不同选项
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App02:33![国际音标：辅音[f][v]发音时，不只是声带振动，还有另一个不同？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0026/81f0a9a857b94bc6b04902f054b1583e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202501210951449A075937684C446061CA&requestFrom=704&version_code=80402&x-expires=1768960305&x-signature=XYINCJRD6KwMX4atHWbSbJowXfQ%3D)
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App02:53![国际音标：单个辅音[h]发音时需要注意？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0026/9ac50634df804a608dc416d91d50a1d7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202501210951449A075937684C446061CA&requestFrom=704&version_code=80402&x-expires=1768960305&x-signature=dOYHOoa55UpTWsG6VNIJVGUyywc%3D)
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