At some point when you were a child，a trusted adult likely told you that if you held a seashell up to your ear，you'd hear the ocean. （1）DDSeashells are not special capsules that have stored the sounds of their native homes.
But what exactly is that rushing sound you're hearing？（2）BB"The sound of an empty shell held up to the ear is created by echoes（回聲）from sounds made in the environment." Geerat J.Vermeil，a distinguished professor of Earth and Planetary Sciences at the University of California，told us.
（3）CCOther structures with openings，like empty bowls or bottles，can produce similar sounds. "When the noise around us hits the internal surface of this hard seashell，multiple reflection occurs，" said Vermeil. "Whether you hold a seashell or the mouth of an empty bowl around your ear，you experience the ocean-like sound quality as a result of a phenomenon called 'resonance'."
（4）GGIt says that you're hearing the sound of your own rushing blood in your body.But scientists also clarify that it doesn't change with variation of pulse or blood pressure. "All this is perhaps a bit unimportant，but a more interesting question is what controls the frequencies of echoes." Vermeil added，indicating that there's a need for further research into shape，volume and shell thickness in relation to pitch. （5）FFActually，if you put a shell to your ear on the beach，the sounds you hear will include partly some ocean noises.
A.The same goes for shells.
B.The answer is less mystical.
C.This effect is not limited to shells.
D.Now you probably know that this is not true.
E.Scientists are working hard to find the answer.
F.Maybe the original myth is not completely false.
G.There's another explanation for the rushing sound in a seashell.
【考點(diǎn)】人與自我．
【答案】D；B；C；G；F
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：1引用：2難度：0.5
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3．Dear Laura，
Thanks for letting us to stay at your seaside house． Now， you might have heard from your neighbors about which happened on Saturday evening． When I was out a walk， my younger son， Tom， played football before your house． He made so many noise that the neighbors got quite angrily． Even worse， Tom broke one of the window of Mr． Wilson's house． Tom and I apologized to all the neighbors for the unhappy happenings， but promised to have the broken window repair soon． Tom said that we would not do such silly things any more． I am glad that your neighbors had forgiven us． They are really nice people．
Yours，
Betty發(fā)布：2025/1/30 8:0:1組卷：12引用：2難度：0.5