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After going over some basic knowledge about hearing, the teacher will lead the s
After going over some basic knowledge about hearing, the teacher will lead the s
游客
2024-09-20
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问题
After going over some basic knowledge about hearing, the teacher will lead the students to______.
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 knowledge about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing.(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. Loudness is measured in units called decibels. One decibel is the lowest sound that the average person can hear.(9)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.(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. 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 to 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.
选项
A、put the theory learned into practice
B、finish and check their homework
C、solve some academic problems
D、cure people who are experiencing hearing loss
答案
A
解析
语义理解题。由句(7)可知,老师在介绍关于听力的基础知识后,会带领同学们测量校园内的噪音并找出解决方案来保护听觉,因此可总结为将学到的理论付诸实践。所以答案为A。
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