关于normal的学习知识

Completely normal

Completely normal

"Wouldyoumindtellingme,Doctor,"Bobasked,"howyoudetectamentaldeficiencyinsomebodywhoappearscompletelynormal?""Nothingiseasier,"hereplied,"Youaskhimasimplequestionwhicheveryoneshouldanswerwithnotrouble....