Monday,January21stI'mavirus(病毒)forthecommoncold.Ithasbe...
问题详情：Monday,January21stI'mavirus(病毒)forthecommoncold.IthasbeenalongtimesinceIinfected(感染)humanslasttime.TodayItriedtoinfectaboyinaprimaryschoolallday.HisnameisSam.Iwaitedonhisdesktop,andwhenhe...