相關soexpertindeedthathe的文學知識

問題詳情：JohnSnowwasafamousdoctorinLondon—soexpert,indeed,thatheattendedQueenVictoriaasherpersonal  61  (physics).Buthebecameinspiredwhenhethoughtabout  62  (help)ordinarypeopleexposedtocholer...