近日,有一位读者来信告诉我说,他最近总感觉听力模糊,后来去医院检查,发现是经常生活在噪音污染下导致了听力衰退。但事实上他的工作、生活环境中并没有噪音,最后他怀疑与耳机有关,因为他经常塞着耳机听音乐。于是他把耳机拿去作技术检测,检验结果表明,他的耳机传出来的不是音乐而是噪音。随着随身听的普及,随身听的配件也跟着火起来。尤其是耳机配件,10元、5元,甚至10元4条的耳机到处都能买到;如果有人花100元买了个耳机,还会招来无数疑惑、惊讶的眼神。购买耳机真的可以那么随便吗? Recently, one of the readers wrote a letter telling me that he had been feeling vague recently and went to the hospital for examination. He found that he often lived under noise pollution and caused hearing loss. But in fact, his work, no noise in the living environment, and finally he suspected headphones, because he is often stuffed with headphones to listen to music. So he took the headset for technical testing, test results showed that his headphones came not music but noise. With the popularity of Walkman, Walkman accessories also follow the fire up. In particular, headphone accessories, 10 yuan, 5 yuan, or even 10 yuan 4 headphones everywhere; if someone spent 100 yuan to buy a headset, but also attracted numerous doubts, surprised eyes. Buying headphones really so casual?