1.

　　With the development of society, unwanted sound is the most widespread nuisance(厌恶的事) in America. But noise is more than just a nuisance. It constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious physical and psychological stress. No one escapes being affected by this stress. Though we seem to adjust to noise by ignoring it, the ear, in fact, never closes and the body still responds—sometimes with extreme tension, as to a strange sound in the night.

　　2.

　　The annoyance we feel when faced with noise is the most common outward symptom of the stress building up inside us. Indeed, because irritability（易怒） is so obvious, legislators(立法人员) have made public annoyance the basis of many noise limit programs. But the more unnoticeable and more serious health hazards(harm and danger) associated with stress caused by noise traditionally have been given much less attention.

　　3.

　　Nevertheless, when we are annoyed or made irritable by noise, we should consider these symptoms fair warning that other things may be happening to us, some of which may be damaging to our health. Of many health hazards to noise, hearing loss is the most clearly observable and measurable by health professionals. The other hazards are harder to pin down(说清). For many of us, there may be a risk that exposure to the stress of noise increases susceptibility to disease and infection. The more susceptible among us may experience noise as a complicating factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have serious consequences for these already ill in mind or body.

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