题目

已知函数的图象如图所示，则_____． 答案：【答案】【解析】根据周期求出，再根据五点法作图求得，可得函数的解析式，从而求得的值．根据函数的图象可得：，，再根据五点法作图可得，，，.故答案为：.Isn’t ______ rude _______ him to talk to his mother like that? [　　] A．that; forB．he; of C．it; forD．it; of