JohnSnowwasbornandworkedasa__36__inGreatBritain．Exactlyhewasananaesthetist，37 meansthatheputpeopletosleepduringoperation．Healsobegantoexperimentusingthesamedrugstohelpwomenwhentheyhad 38 ．Thatiswhyhebecamethedoctorwho 39 Queenvictoriatogivethebirthofherbabies．

Atthetimehelived，cholerawasthemost 40disease．Neitheritscause，norits 41 wasunderstood．Somanythousandsofpeopledied 42 therewasanoutbreak．JohnSnowwas 43tohelpordinarypeople 44 fromcholera．He 45 thediseasebeganinthestomachandthepatientsdiedquicklyafterseverevomiting(呕吐)anddiarrhea(腹泄)．46 ，hebelievedcholeraresultedfromwater．Whenanother 47 hitLondonin1854，JohnSnowsettowork．

JohnSnowapproachedtheprobleminasystematicway．Hemarkedonamap 48 allthedeadpeoplehadlivedandfoundmanyofthe 49 werenearawaterpump．Itseemedthewaterwasthe 50 ．Sohecollectedinformationaboutthe 51habitsofthedeadpeopleandusedthemeventuallytoprovehistheory．Withtheinformation 52 ，JohnSnowwassure that 53 waterwasthecause．

Thenpeoplewererequiredto54 thewatercompanytosupplythemwithcleanwater．Thanks__55___JohnSnowtherewasnomoreoutbreaksofcholera．

【小题1】A．scientistB．anofficialC．anofficerD．doctor【小题2】A．who B．that Cwhich D．it

【小题3】A．painB．acheC．difficultiesD．babies【小题4】A．assistedwithB．tookcareC．lookafterD．joined【小题5】A．surprisingB．interestingC．interestedD．frightening【小题6】A．cureB．methodC．resultD．threat【小题7】