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Longagooperationusuallyhadtobedonewhilethesickmancouldfeeleverything.Thesickmanhadtobehelddownonatablebyforcewhilethedoctorsdidtheirbesttosavehim.Hecouldfeelallthepainifhislegorarmwas
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更新时间:2024-04-19 13:37:50
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Longagooperationusuallyhadtobedonewhilethesickmancouldfeeleverything.Thesickmanhadtobehelddownonatablebyforcewhilethedoctorsdidtheirbesttosavehim.Hecouldfeelallthepain

ifhislegorarmwasbeingcutoffandhisfearfulcriesfilledtheroomandtheheartsofthosewho

watched.

Soonafter1770JoseptPriestleydiscoveredagaswhichisnowcalled"laughinggas".Laughinggas

becameknowninAmerica.Youngmenandwomenwenttopartiestotryit.MostofthemspenttheirtimelaughingbutonemanatapartyHoraceWellsnoticedthatpeopledidn'tseemtofeelpainwhenthey

wereusingthisgas.Hedecidedtomakeanexperimentonhimself.Heaskedafriendtohelphim.

WellstooksomeofthegasandhisfriendpulledoutoneofWells'teeth.Wellsfeltnopainatall.

Ashedidn'tknowenoughaboutlaughinggashegaveamanlessgasthanheshouldhave.Theman

criedoutwithpain whenhistoothwasbeingpulledout.

Wellstriedagainbutthistimehegavetoomuchofthegasandthemandied.Wellsneverforgotthis

terribleevent.

1.Longago,whenthesickmanwasoperatedonhe______.

A.couldfeelnothing

B.couldnotwantanything

C.couldfeelallthepain

D.coulddoanything

2.Usingthelaughinggasthepeopledidnotseemto______.

A.beafraidofanything

B.feelpain

C.wanttogototheparties

D.be ill

3.Ifamantooklesslaughinggasthanheshouldhavewhenanoperationwentonhe______.

A.feltnothing

B.feltverycomfortable

C.stillfeltpain

D.woulddie

4.Onewhotooktoomuchofthelaughinggas______.

A.wouldlaughallthetime

B.wouldbeverycalm

C.wouldneverfeelpain

D.woulddie.

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