题目内容
【题目】 Do you often listen to music at loud volumes（音量）? You should know that this habit is bad for your hearing, according to the World Health Organization（WHO）.
Over 1 billion young people are at risk of hearing loss due to listening to loud noise for long periods of time, WHO said. Listening to music or watching a TV show at loud volumes can harm your hearing.
The United nations has standards for safe listening. It is not safe to listen to sounds that are louder than 85 decibels（dB分贝）for eight hours or 100 dB for 15 minutes. The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB.
Loud noise is harmful to the inner ear（内耳）. Most of us are born with about 16,000 hair cells（听毛细胞）in our inner ears. These cells detect sounds. However, listening to loud noise for a long time can make these cells work too hard and cause some of them to die. This is what causes hearing loss.
Some people might think that their music isn’t that loud. But this depends on where you are. For example, if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. Later, when you listen to it at the same volume in a quiet place, you might feel uncomfortable.
WHO said the “safe level” for most sound is below 80 dB for up to 40 hours a week. A level of 80 dB is nearly equal to the noise of a subway.
【1】Which of the following is bad for our hearing?
A.Reading books aloud in the morning.B.Talking with friends now and then.
C.Listening to music loudly more often.D.Using smart phones for a long time.
【2】Listening to sounds louder than 85 decibels for _________ hours is not safe for our listening.
A.5B.6C.7D.8
【3】From the fourth paragraph, we can know that ________.
A.inner ear can stop from the louder noise
B.hair cells in inner ear are very important for people
C.people can hear without hair cells
D.hair cells are not something people are born with
【4】The underlined word “detect” in the fourth paragraph probably means “________”.
A.discoverB.doubtC.cancelD.remain
【5】The best title（题目）for the passage can be _________.
A.The inner earB.UN safety listening standards
C.Pay attention to protecting our hearingD.The “safe level” for sound
【答案】
【1】C
【2】D
【3】B
【4】A
【5】C
【解析】
文章大意：本文是一篇说明文。文中指出听音乐时将音量调得过高这一习惯对听力有害。同时介绍了联合国安全听力的标准。
【1】细节理解题。题干意为：下列哪种行为会对我们的听力有害？根据文章开头第一、二句“Do you often listen to music at loud volumes（音量）? You should know that this habit is bad for your hearing...”可知C项符合题意，故选C。
【2】细节理解题。题干意为：听高于85分贝的声音超过____小时对我们的听力有坏处。根据第三段第二句“It is not safe to listen to sounds that are louder than 85 decibels（dB分贝）for eight hours or 100 dB for 15 minutes.”可知D项正确，八十五分贝超过八小时即有害。故选D。
【3】推理判断题。题干意为：从第四段中我们可以知道____。第四段内容介绍的是如果声音过大，会引起听毛细胞死亡，从而导致听力下降。所以该段主要介绍内耳中听毛细胞的重要性，故选B。
【4】词义猜测题。题干意为：第四段画线单词“detect”可能意为___。A项：发现；B项：怀疑；C项：删除；D项：保留。根据第四段第二、三句可知此处表示听毛细胞能够察觉到声音，结合选项可知与A项discover词义相近。故选A。
【5】标题归纳题。题干意为：这篇文章的最佳标题是____。通过阅读全文，可知是描述听音量过高的音乐与噪音对听力的危害，所以是告诉我们应该注意保护我们的听力，故选C。
