John Snow was born and worked as a 36 in Great BritainExactly, he was an anaesthetist，37

John Snow was born and worked as a     36     in Great Britain．Exactly, he was an anaesthetist，37 means that he put people to sleep during operation．He also began to experiment using the same drugs to help women when they had   38 ．That is why he became the doctor who  39 Queen victoria to give the birth of her babies．
At the time he lived，cholera was the most  40 disease．Neither its cause，nor its  41 was understood．So many thousands of people died  42 there was an outbreak．John Snow was  43 to help ordinary people   44  from cholera．He  45  the disease began in the stomach and the patients died quickly after severe vomiting(呕吐)and diarrhea (腹泄)．46 ，he believed cholera resulted from water．When another  47 hit London in 1854，John Snow set to work．
John Snow approached the problem in a systematic way．He marked on a map  48 all the dead people had lived and found many of the   49  were near a water pump．It seemed the water was the 50 ．So he collected information about the  51 habits of the dead people and used them eventually to prove his theory．With the information  52  ，John Snow was sure  that   53  water was the cause．
Then people were required to 54  the water pany to supply them with clean water．Thanks     55     John Snow there was no more outbreaks of cholera．
【小题1】A．scientistB．an officialC．an officerD．doctor【小题2】A．who           B．that          C which        D．it
【小题3】A．painB．acheC．difficultiesD．babies【小题4】A．assisted withB．took careC．look afterD．joined【小题5】A．surprisingB．interestingC．interestedD．frightening【小题6】A．cureB．methodC．resultD．threat【小题7】A．each timeB．at one timeC．in no timeD．the first time【小题8】A．delightedB．devotedC．absorbedD．determined【小题9】A．sufferedB．having sufferedC．sufferingD．being suffered【小题10】A．noticedB．was noticingC．has noticedD．had noticed【小题11】A．ThereforeB．As a result ofC．SoD．According to【小题12】A．diseaseB．disasterC．outbreakD．case【小题13】A．howB．whereC．whatD．in which【小题14】A．womenB．menC．deathD．injuries【小题15】A．resultB．causeC．originD．case【小题16】A．drinkingB．1ivingC．workingD．housing【小题17】A．having collectedB．being collectedC．collectedD．collecting【小题18】A．being pollutedB．pollutedC．pollutingD．having polluted【小题19】A．take onB．call onC．depend onD．carry on【小题20】A．toB．/C．forD．onD