初三英语短文填空
Whenyousingintheshoweryourvoicesoundslouderandricher.Didyoueverwwhy?
Yourvoicesoundsloudinthebathroombecausetheroomissmall.Soundisafofwaveenergythatcantthroughair.Butsoundwaveslosestrengthastheymovethroughtheair.Thatmeansthatitgetshtohearasoundthefartheryouarefromitssource(来源).Inthebathroom,thesoundwavesdonotgoveryfar.Soundsstayloud.Youdon’tevenneedamicrophone(扩音器)tofeellikeyou’reonstageatamusicconcert!
Thewalls,ceiling,andfloorahelpyourvoicesoundbetter.Soundwavesbounce(反弹)offthehardsurfacesinabathroomandcomebtoyou.Thismakesyourvoicesoundlouderandclearer.
Theairinthebathroomreallygetsintotheact.Soundwavesmaketheairvibrate(振动).Inasmallspace,thisletsyourearscalotofthosesongvibrations.
There’sakindofwavethatgetsthingsshakinginyourhouse.Canyouguesswhatitis?Takeatriptothekitchen.
Whenyousingintheshoweryourvoicesoundslouderandricher.Didyoueverwwhy?
Yourvoicesoundsloudinthebathroombecausetheroomissmall.Soundisa(f)ofwaveenergythatcan(t)throughair.Butsoundwaveslosestrengthastheymovethroughtheair.Thatmeansthatitgets(h)tohearasoundthefartheryouarefromitssource(来源).Inthebathroom,thesoundwavesdonotgoveryfar.Soundsstayloud.Youdon’tevenneedamicrophone(扩音器)tofeellikeyou’reonstageatamusicconcert!
Thewalls,ceiling,andfloor(a)helpyourvoicesoundbetter.Soundwavesbounce(反弹)offthehardsurfacesinabathroomandcome(b)toyou.Thismakesyourvoicesoundlouderandclearer.
Inasmallspace,thisletsyourears(c)alotofthosesongvibrations.
There’s(a)kindofwavethatgetsthingsshakinginyourhouse.Canyouguesswhatitis?