英语必修5P2第一篇课文,JOHNSNOWDEFEAT的简述急,求英语必修五P2页课文简述,英文简述,简述就行.
英语必修5P2第一篇课文,JOHNSNOWDEFEAT的简述
急,求英语必修五P2页课文简述,英文简述,简述就行.
英语必修5P2第一篇课文,JOHNSNOWDEFEAT的简述急,求英语必修五P2页课文简述,英文简述,简述就行.
英语必修5P2第一篇课文,JOHNSNOWDEFEAT的简述
急,求英语必修五P2页课文简述,英文简述,简述就行.
johnsnow adoctor,attendedqueenvictoriaasherpersonalphysician.buthewaswilltohelpordinarypeopleexposedtocholera.manypeopiediedeverytimetherewsaanbreakout.hewantedtofacethechallengeandsolvetheproblem.twotheoriescaughthisattentionthefirstsuggestedthatcholeramultipliedintheair.thesecondsuggestedthatpeopleabsorbedthisdiseaseintotheirbodiesandthediseaseattactedthebody.johnsnowsuspectedthatthesecondwasrightbutheneedevidence.whenanotherbreakhitlondonin1854,hewasreadytobeginhisenquiryandtriedtogetinformation.hefoundmostofthedeathswerenearawaterpumpandthespreadofthediseasewaswater.withtheevidence,hewasabletoannouncethatpullutedwatercarriedthevirus.afterthat,hesuggestedthathesourceofallthewatersuppliesshouldbeexamined.finally,"kingcholera"wasdefected.