关于托福听力背景材料的信息的收集，在考试中有方面是同学们忽略的，要善于总结，新航道托福课程的学习帮助同学们跨过障碍。小编整理了下面的一篇有关噪音的文章，供同学们参考。
I'm grad to see so many of you here. We've become really alarmed over the health center by the number of students we are seeing, who are experiencing hearing loss. First, I want to go over some basic about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing. The leading cause of preventable hearing loss is excessive noise.【托福听力】 Too much moderate noise for a long time or some types of intense noise for even a short time can damage hearing. Loudness is measured in units called decibels. One decibel is the lowest sound that the average person can here. Sounds up to 80 decibels generally aren't harmful. That's noise like traffic on a busy street. But anything louder than 80 decibels, especially with continuous exposure, may eventually hurt your hearing. Once you are up to around 140 decibels, that's like a jet plane taking off, then you might even feel pain in your ears.【托福听力】 And pains are sure sign that your hearing's at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is limit your exposure to harmful levels. If you pass along this handout, we can take a look at the decibel level of some common campus sounds. Notice how loud those horns are that people take to football games. They are really dangerous if blown right behind you. Now, let's try to generate a list of damaging noises
注意搜集和生活相关的文章，多发现多积累托福听力背景材料，相信是属于你的，新航道托福课程一路与你同在。最后，预祝同学们考试顺利，早日结束考试。
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