AC/DChavepostponedtheirUStouraftersingerBrianJohnsonwaswarnedbydoctorsthathewasatriskoftotalhearingloss.Thisisunsurprising，giventhedecadesthattheAustralianbandhasbeenpumpingoutthehardrockdecibels（分贝）.Butdeafnessisn&rsquotonlyaconcernforrockmusicians.Inrecentyearsithasbecomeclearthatanyonearoundmusicalothasreasontobeequallyworried.

Whenexposedtomusic，risktohearingarisesfromacombinationofhowloudthesoundisandhowlongyou&rsquoreexposedtoit.Ifyouvisitanightclubthatisthumpingout（响亮地奏出）musiconthedancefloorat100dB，thenafteronly10-15minutestheexposureispotentiallydamaging.Inaquieterpartoftheclub，butwherethemusicisstillloudenoughthatyouhavetoshoutatyourfriends，thenyoucouldbethereforacoupleofhoursbeforehavingtoworryaboutyourhearing.Ofcoursemusicfrequentlyexceeds（超过）80-85dB，butwhatcountsmostinassessingtherisktohearingistheaverageexposure.

Exposuretohighnoiselevelsoftencausestemporarydeafness&mdashsomethingmanypeoplehaveexperiencedaftergoingtoanightclub.Whilehearingusuallyrecoversafterafewhoursordays，repeatedloudexposureleadstopermanenthearingdamage.Initially，thisdamageissubtleandunlikelytobenoticedbythelistener.Problemsonlybecomessignificantinmiddleagewhenthenoise-inducedhearinglosscombineswiththenaturallossofhearingduetoageing.

Improvedtechnologymeansthatthenumberofmusicianshavingtogiveupperformingcoulddecrease，butstudentmusiciansneedtobeeducatedaboutthedangersofnoise-causedhearingloss.Theincreasinguseofheadphoneswillalsoworkagainstthis&mdashformusiciansandeveryoneelse.Unlesspeoplearecarefulwiththevolume（音量）levelontheirportablemusicplayers，hearinglosscausedbymusicwillincrease.

1.WhatdoesParagraph1mainlyaimtotellus?

A.Musicianstendtobevictimsofmusic.

B.Itishelpfultocheckhearingregularly.

C.Beingwithmusicisn&rsquotnecessarilybeneficial.

D.Deafnesshasbecomemusicians&rsquomajorconcern.

2.What&rsquosthemostimportantfactorconsideredintheassessmentofriskmusichastohearing?

A.Itsdecibel.

B.Theaverageexposure.

C.Itsplayingenvironment.

D.Thelistener&rsquossensitivitytosound.

3.Peoplewhogotonightclubsfrequentlytendto（）（）.

A.sufferfromtemporaryheadache

B.havetheirhearingdamagedforever

C.experiencenaturalhearinglossearlier

D.haveaclearsenseoftheirhearingdamage

4.Whichofthefollowingbestreflectstheauthor&rsquosopinion?

A.Improvingtechnologycanpreventhearingdamage.

B.Studentsmusiciansaremainsufferersofhearingloss.

C.Usingheadphoneshelpsreducehearinglosstoadegree.

D.Wecanneverbetoocarefulwiththevolumelevelofmusic.

正确答案：

1.C

2.B

3.B

4.D

答案解析：

作者通过具体事例告诉我们音量太大会对我们的听力造成损害，提醒我们时刻注意音乐的音量，避免对听力造成伤害。