阅读表达：76. Hearing loss caused by electronic devices./ Electronic devices may cause hearing loss.（评分要求：根据文章内容能与参考答案的意思相近的程度酌情给分。只写出类似“Hearing loss”等过于笼统的答案不得分。)
77. play the music.
78. reduce the volume./ turn down the player./ lower the sound levels (评分要求：凡是能表达“调低音量”的含义，并且表述无误者，均得分)
