【聽力答案】

7. A 8. D 9. C 10. B

【聽力原文】

Passage 3

I'm glad 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.（7）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,（老師在介紹關于聽力的基礎知識后，會帶領同學們測量校園內的噪音并找出解決方案來保護聽覺，因此可總結為將學到的理論付諸實踐。）（8）The leading cause of preventable hearing loss is excessive noise. Too much moderate noise for a long time or some types of intense noise for even a short time can damage hearing.（過多的嗓音會造成聽力喪失，過長時間暴露在中等噪音或短時間暴露在劇烈噪音中，都會帶來聽力損傷。文中并未涉及短時間暴露在中等噪音中的情況。）Loudness is measured in units called decibels. One decibel is the lowest sound that the average person can here.（9）Sounds up to 80 decibels generally aren't harmful.（80分貝以下的聲音不會對聽覺造成傷害。）That's noise like traffic on a busy street.But anything louder than 80 decibels, especially with; continuous exposure, may eventually hurt your hearing. （10）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.（暴露在140分貝的噪音環境中，你會感覺耳朵疼痛；但并不至于失聰或暈倒。）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.

【核心詞匯】

decibel n.分貝

excessive a.過分的；過多的

exposure n.暴露

intense a.劇烈的；緊張的

moderate a.適度的，中等的

hearing loss 失聰