Oneday,aprofessorwalkedintotheclassroomandaskedhisstude...
問題詳情:Oneday,aprofessorwalkedintotheclassroomandaskedhisstudentstogetreadyforasurprisetest.Theywaited 41 attheirdesksforthetesttobegin.Theprofessor 42 thequestionpapers,withthetextfacingdown...