完形填空JohnSnowwasbornandworkedasa1in

完形填空John Snow was born and worked as a1 in Great Britain.Exactly, he was an anaesthetist，2means that he put people to sleep during operation.He also began to experiment using the same drugs to help women when they had3.That is why he became the doctor who4Queen victoria to give the birth of her babies. At the time he lived，cholera was the most5disease.Neither its cause，nor its6was understood.So many thousands of people died7there was an outbreak.John Snow was 8to help ordinary people9from cholera.He10the disease began in the stomach and the patients died quickly after severe vomiting(呕吐)and diarrhea (腹泄).11，he believed cholera resulted from water.When another12hit London in 1854，John Snow set to work. John Snow approached the problem in a systematic way.He marked on a map13all the dead people had lived and found many of the14were near a water pump.It seemed the water was the15.So he collected information about the 16habits of the dead people and used them eventually to prove his theory.With the information17，John Snow was sure that18water was the cause. Then people were required to19the water pany to supply them with clean water.Thanks20 John Snow there was no more outbreaks of cholera.1.A.scientistB.an officialC.an officerD.doctor2.A.whoB.thatC.whichD.it3.A.painB.acheC.difficultiesD.babies4.A.assisted withB.took careC.look afterD.joined5.A.surprisingB.interestingC.interestedD.frightening6.A.cureB.methodC.resultD.threat7.A.each timeB.at one timeC.in no timeD.the first time8.A.delightedB.devotedC.absorbedD.determined9.A.sufferedB.having sufferedC.sufferingD.being suffered10.A.noticedB.was noticingC.has noticedD.had noticed11.A.ThereforeB.As a result ofC.SoD.According to12.A.diseaseB.disasterC.outbreakD.case13.A.howB.whereC.whatD.in which14.A.womenB.menC.deathD.injuries15.A.resultB.causeC.originD.case16.A.drinkingB.livingC.workingD.housing17.A.having collectedB.being collectedC.collectedD.collecting18.A.being pollutedB.pollutedC.pollutingD.having polluted19.A.take onB.call onC.depend onD.carry on20.A.toB./C.forD.on