selectAnswer(e) {

// 提示音 开始

    this.innerAudioContext = wx.createInnerAudioContext()

    var src = '/asserts/sound/1.mp3';

    this.innerAudioContext.autoplay = true;

    this.innerAudioContext.obeyMuteSwitch = true;

    this.innerAudioContext.src = src;

    this.innerAudioContext.play();

    // 提示音 结束

}